Plant Guide to Weir Trail / Lower Doane Valley Trail Loop, Palomar Mountain State Park

Plant Guide to Weir Trail / Lower Doane Valley Trail Loop, Palomar Mountain State Park

This is a working list, about which we make no guarantees at all until we officially release it. Use at your own risk!

This guide is especially immature, since most of the botanizing has been fairly fast-paced trips, with the pace hastened in some cases by the large number of bugs on this trail. In particular, beyond mile 0.27, this guide is not our usual Trail Plant Guide; it lists only some of the plants along the route noted on several fairly high-speed walks. Many of the first occurrences of these species are earlier than noted here.
One distinct problem for botanizing on this trail is the large number of deer flies, black flies and mosquitoes. That's the price one pays for botanizing in a quite wet area!
Introduction and Explanation of Plant Trail Guides
Introduction
Highlights of This Trail
Fieldwork Dates and Summary of List Changes With Time
Botanical Trip Reports
The Plant Guide
Comments On Specific Species
Introduction

(Most of intro to be added.)
Directions to trailhead:
Palomar Mountain State Park is at the southwest portion of the summit of Palomar Mountain, reached by going west on State Park Road at the intersection of S6 and S7 at Mother's Kitchen.
Palomar Mountain State Park Brochure, Including Map. A printed copy of this brochure is $1 at the entrance kiosk.
Within the Park, it is a bit confusing as to how to get to the Doane Pond parking lot, since the signage last year on the road was fairly poor. Several of us made excursions to other places before we finally found the correct parking lot.
Past the entrance kiosk, where you pay the entrance fee, go right at the first junction and follow the signs to the Doane Valley Campground and / or Doane Pond. If you don't see any sign, the rule is to stay right at every junction. Immediately before the campground is the parking lot on the right. Doane Pond is just past the left far side of the parking lot, with the Weir / Doane Valley Nature Trail trailhead on the right far side of the parking lot.
Expect at least a 10 minute delay in the State Park each way due to logging along the road. This logging is to provide a safe exit for people in the park in the event of wildfire, and to create a fire break at the roads. The lumber (incense cedar and white fir) is being milled at a temporary mill set up at Mesa Grande.
There are toilets immediately south of the parking lot, but they are unsigned and not visible from the parking lot.
This hike begins at Doane Pond parking lot. On the park map, the outgoing trail is marked as the Doane Valley Nature Trail and Weir Trail, and the return trail is marked as the Lower Doane Trail.
Highlights of This Trail

The botanical highlights of this trail are:

Number of Unique Taxa On This Trail

The following histogram gives the number of trails in our database that contain each taxon on this trail. We had 75 trails in our database when this histogram was made; this is the only one of the trails in Palomar Mountain State Park. A number of "1" means the taxon has only been found on this trail among the trails in our database.

Number of Trails
Containing A Taxon Number Of Taxa
On This Trail % of Taxa
On This Trail
1 18 13%
2 14 10%
3 10 7%
4 9 7%
5 9 7%

1-5 60 43%
6-10 28 20%
11-15 20 14%
16-20 8 6%
21-25 9 7%
26-30 2 1%
31-35 4 3%
36-40 6 4%
41-45 1 1%
Total Taxa 138 100%

We found 17 additional species not in the above table, since they have not been identified yet. The unidentified ones are marked with ? or sp in the id? column in the guide, and do not have any number given in the #all column.
Note how different the Palomar Mountain State Park flora is from the rest of Southern California! 18 taxa do not appear on any other trail in our database!
Fieldwork Dates and Summary of List Changes With Time

The following table gives the dates the trail was walked and taxa recorded. After each visit, the table gives the total number of taxa on the list and the breakdown of the taxa without positive identification. See Explanation of Plant Trail Guides to understand the symbols below.

Visit Date Visit # # taxa # "?" # "sp" # "~" # "ssp"
6/21/2003 1 127 3 23 6 7
6/30/2003 2 134 3 19 4 6
7/3/2003 3 146 7 20 6 6
6/25/2004 4 155 7 15 9 7

The walk on 6/21/03 was a fairy quick initial reconnaissance of this trail ("drive-by botanizing"); we thank two anonymous people for their assistance on this trip. The walk on 6/30/03 was even quicker, and was primarily to get mileages to some points. On 7/3/03, a more careful survey was done of only the first 0.27 miles.
Paula Knoll and two other Canyoneers assisted with the fieldwork on 6/25/04.
Botanical Trip Reports

25 June 2004
The Plant Guide

Version for printing, without lines and other text on this page (7 pages)

Mile S # id? Common Name Latin Name #here #all
0.00 Begin Weir / Doane Valley Nature Trail at southwest corner of Doane Pond Parking Area; elevation ~4660 feet (1420 m). Beyond mile 0.27, this guide is not our usual Trail Plant Guide; it lists only some of the plants along the route noted on several fairly high-speed walks. Many of the first occurrences of these species are earlier than noted here.
0.00 b 1 *redstem filaree Erodium cicutarium / 40
0.00 b 2 Spanish clover Lotus purshianus var. purshianus 50 / 5 16
0.00 b 3 *downy brome Bromus tectorum / 19
0.00 l 4 dwarf lupine Lupinus bicolor / 19
0.00 b 5 *shortpod mustard Hirschfeldia incana / 40
0.00 c 6 *knotweed Polygonum arenastrum / 9
0.00 r 7 wild tarragon Artemisia dracunculus / 20
0.00 l 8 *pineapple weed Chamomilla suaveolens / 14
0.00 r 9 California-aster Lessingia filaginifolia var. filaginifolia / 40
0.00 r 10 *soft chess Bromus hordeaceus / 28
0.00 r 11 *wall bedstraw Galium parisiense / 4
0.00 r 12 hoary coffeeberry Rhamnus tomentella ssp. tomentella 1 / 1 2
0.00 r Brochure box containing a Guide to the Doane Valley Nature Trail
0.00 l Sign: "Doane Valley Nature Trail; Weir 1.2 mi; Baptist Trail 0.5 mi; French Creek 1.2 mi; Lookout 2.5 mi"
0.00 b 13 stinging nettle Urtica dioica ssp. holosericea 99 / 9 8
0.00 l Signpost "1" for stinging nettle, Urtica dioica ssp. holosericea.
0.01 l 14 arroyo willow Salix lasiolepis 10 / 2 27
0.01 r 15 Mexican rush Juncus mexicanus 99 / 5 9
0.01 r 16 ~ *common mullein Verbascum thapsus 2 / 2 3
0.01 l 17 sp Pacific rush? Juncus effusus var. pacificus? / 2
0.01 l 18 California wild rose Rosa californica 40 / 9 11
0.01 l 19 ~ *Italian thistle Carduus pycnocephalus 20 / 4 12
0.01 l 20 winter cress Barbarea orthoceras / 5
0.01 b 21 sp musk monkeyflower? Mimulus moschatus? /
0.01 r 22 popcorn flower Cryptantha intermedia / 21
0.01 b 23 ~ rigid hedge-nettle Stachys ajugoides var. rigida 10 / 2 3
0.01 r 24 ~ virgin's bower Clematis ligusticifolia 5 / 5 8
0.01 r 25 ? bluegrass? Poa sp.? /
0.01 l 26 dock? Rumex sp.? /
0.01 Cross creek.
0.01 l 27 woodland strawberry Fragaria vesca 30 / 5 2
0.01 r 28 sticky cinquefoil Potentilla glandulosa ssp. reflexa 30 / 5 8
0.01 r 29 ~ Fremont's goosefoot Chenopodium fremontii / 10
0.01 l 30 California black oak Quercus kelloggii / 11
0.01 b 31 branching phacelia Phacelia ramosissima var. latifolia / 25
0.02 l 32 incense-cedar Calocedrus decurrens 99 / 9 11
0.02 l 33 ? unk grass like melica
0.02 r 34 *common dandelion Taraxacum officinale / 3
0.02 r Signpost "2" for wild rose, Rosa californica.
l 35 canyon live oak Quercus chrysolepis / 19
0.04 Cross another creek on a bridge.
0.05 Cross paved park road
0.05 r 36 ssp blue wildrye Elymus glaucus 20 / 4 5
0.05 r 37 ~ goldenrod Solidago californica / 25
0.06 r 38 ? baby checkerbloom? Sidalcea malviflora ssp. sparsifolia? / 14
0.06 l 39 California blackberry Rubus ursinus / 13
0.06 r 40 mountain sweet-cicely Osmorhiza chilensis 50 / 5 4
0.07 l Signpost "3" for "Doane Creek, pronounced "doe-n", containing water from several springs.
0.08 Cross Doane Creek
0.08 r 41 ~ mountain bog bulrush Scirpus microcarpus / 1
0.08 r 42 mountain pink currant Ribes nevadense 10 / 3 6
0.08 l Check for different Juncus.
0.08 l 43 sp creeping snowberry Symphoricarpos mollis / 6
0.09 l 44 common bedstraw Galium aparine / 25
0.09 l 45 bracken Pteridium aquilinum var. pubescens / 8
0.09 r 46 ? unk tree
0.09 l 47 Utah service-berry Amelanchier utahensis / 7
0.09 r 48 sp velvet ash? Fraxinus velutina? /
0.10 l Signpost "4" for serviceberry, Amelanchier utahensis.
0.10 r 49 thimbleberry Rubus parviflorus 30 / 5 2
0.10 l 50 hairy honeysuckle Lonicera hispidula var. vacillans 1 / 1 1
0.11 l Signpost "5" for "Life in a Log".
0.12 r 51 poison oak Toxicodendron diversilobum 99 / 9 33
0.12 l 52 sp Child's collinsia Collinsia childii 99 / 5 1
0.12 r 53 *ripgut brome Bromus diandrus / 38
l 54 sp Sierra gooseberry? Ribes roezlii var. roezlii? 2 / 2
0.13 r 55 ? unk grass
l 56 diamond-petaled clarkia Clarkia rhomboidea 50 / 7 4
0.14 r Signpost "6" for thimbleberry, Rubus parviflorus.
0.16 r Signpost "7" for white fir, Abies concolor.
0.16 l (Fendler's meadow-rue, Thalictrum fendleri var. fendleri)
0.16 l 57 woolly angelica Angelica tomentosa 30 / 5 1
0.16 r 58 white fir Abies concolor / 17
0.18 l 59 blue elderberry Sambucus mexicana / 37
0.18 l Signpost "8" for "Landslide! From 80 inches of rain in 1992-1993". Note the huge stone crib / wall constructed above trail.
0.18 l 60 sp groundsmoke Gayophytum diffusum ssp. parviflorum 50 / 3 10
0.18 r 61 miner's lettuce Claytonia perfoliata ssp. perfoliata / 14
0.18 l 62 sp one-sided bluegrass Poa secunda ssp. secunda / 21
0.18 r 63 box elder Acer negundo var. californicum / 1
0.18 l 64 wild pepper-grass Lepidium virginicum var. pubescens / 4
0.19 r 65 large-flowered collomia Collomia grandiflora / 3
0.20 l 66 western columbine Aquilegia formosa 5 / 1 4
0.20 l Signpost "9" for Parish's burning bush, Euonymus occidentalis var. parishii.
0.20 l 67 Parish's burning bush Euonymus occidentalis var. parishii 10 / 3 1
0.24 r (white alder, Alnus rhombifolia)
0.25 r A small "chair" carved into a stump.
0.26 l Signpost "10" for "Berry Alley" - mountain pink currant (Ribes nevadense), white-bark raspberry (Rubus leucodermis), and wild strawberry (Fragaria vesca).
0.26 l 68 white-bark raspberry Rubus leucodermis 1 / 1 3
0.27 Y-jct. Go right on Doane Valley Nature Trail for a optional brief excursion, not counted in the mileage in the rest of the guide. (Left is Weir Trail, also signed to Boucher Lookout)
l 69 phlox-leaved bedstraw Galium andrewsii ssp. andrewsii 3 / 3 4
r 70 sp sedge with triangular fruit Carex sp. /
0.33 r Signpost "11" for "Lichens and Mosses"
0.35 l Signpost "12" for white alder, Alnus rhombifolia.
71 white alder Alnus rhombifolia / 9
l Signpost "13" for "Plant Competition", the shading-out of plants underneath the forest canopy.
r 72 whisker-brush Linanthus ciliatus 20 / 2 5
l Signpost "14" for a huge "incense-cedar", Calocedrus decurrens. We measured this tree to be 72 feet tall, with a diameter at breast height of 7.1 feet, derived from its circumference of 22.4 feet. Please stay behind the fence to prevent compacting the soil and killing this tree.
r 73 Parish' Jacumba milk-vetch Astragalus douglasii var. parishii 10 / 3 3
r 74 ? sticky lessingia Lessingia glandulifera var. glandulifera / 1
r 75 mustang mint Monardella lanceolata 20 / 2 3
r 76 clustered field sedge Carex praegracilis / 2
l 77 sp suncup Camissonia sp. /
0.40 r 78 dove weed Eremocarpus setigerus / 12
End excursion on Doane Valley Nature Trail; return to the Weir Trail by backtracking to the jct. at mile 0.27.
0.27 r Back at the jct. with the Weir Trail. Go right on it. Some species from the excursion are also listed below, but not numbered as new species. Note that the mileage now does not include the previous optional excursion.
0.42 b (ocellated Humboldt lily, Lilium humboldtii ssp. ocellatum
0.44 l 79 cliff sword fern Polystichum imbricans ssp. curtum 2 / 2 1
0.55 l 80 Palmer's ceanothus Ceanothus palmeri 10 / 5 5
0.61 l Jct. trail to Overlook. Stay right.
0.61 r 81 spreading dogbane Apocynum androsaemifolium 20 / 5 2
0.61 b 82 ssp western vervain Verbena lasiostachys var. scabrida 10 / 2 3
0.64 l Note the fallen trunk, which begins with two separate trees that then merge, with growth rings around both of them after the merger.
0.64 l 83 Sierra Nevada lotus Lotus nevadensis var. nevadensis 5 / 1 5
0.64 l whisker-brush Linanthus ciliatus /
l 84 California needlegrass Achnatherum occidentale ssp. californicum / 5
b 85 mugwort Artemisia douglasiana 30 / 5 25
b 86 sp sticky false-gilia Allophyllum glutinosum 1 / 1 6
b 87 yarrow Achillea millefolium 30 / 5 10
0.67 r 88 ? unk like caulanthus? ? /
0.68 l mustang mint Monardella lanceolata /
0.70 r 89 leafy daisy Erigeron foliosus var. foliosus⁺ 5 / 2 32
0.71 r 90 ssp (Eastwood manzanita, Arctostaphylos glandulosa ssp. zacaensis)
0.71 r 91 broad-leaved lotus Lotus crassifolius var. crassifolius 10 / 2 5
0.71 r 92 ssp *rattail fescue Vulpia myuros / 8
l 93 white everlasting Gnaphalium canescens ssp. microcephalum / 31
l 94 western choke-cherry Prunus virginiana var. demissa / 6
0.78 r 95 California coffeeberry Rhamnus californica ssp. californica / 12
l 96 ssp squirreltail Elymus elymoides 20 / 5 6
0.81 l 97 Cleveland's horkelia Horkelia clevelandii 5 / 1 2
0.81 l (western wallflower, Erysimum capitatum ssp. capitatum)
0.81 l 98 ~ California milkweed Asclepias californica 10 / 2 2
0.81 r 99 water cress Rorippa nasturtium-aquaticum 10 / 2 9
0.81 l 100 *spearmint Mentha spicata var. spicata 5 / 1 2
0.81 l 101 sp buckwheat Eriogonum sp. /
0.81 r 102 creeping leather root Hoita orbicularis 5 / 1 1
0.81 r 103 Pacific oenanthe Oenanthe sarmentosa 5 / 1 1
0.81 l 104 cows clover Trifolium wormskioldii / 4
0.81 l 105 small-head field clover Trifolium microcephalum / 4
0.81 l 106 streambank Lotus Lotus oblongifolius var. oblongifolius 20 / 1 2
0.81 r 107 common monkeyflower Mimulus guttatus 20 / 2 7
0.81 l 108 *forget-me-not Myosotis discolor⁺ 10 / 1 1
0.81 l 109 sp upright knotweed Polygonum sp. 1 / 1
0.81 l 110 Scouler's St. Johnswort Hypericum formosum var. scouleri 5 / 1 1
0.81 l 111 *corn speedwell Veronica arvensis 5 / 1 1
0.81 l 112 ~ willowherb Epilobium ciliatum ssp. ciliatum / 15
0.81 Cross Doane Creek
0.81 r 113 *sweet william Dianthus barbatus ssp. barbatus⁺ 1 / 1 1
0.82 Y-jct. Go left on Weir Trail. (Trail to right is connector to Lower Doane Valley Trail)
r checkerbloom Sidalcea malviflora ssp. sparsifolia⁺ /
0.82 r 114 bush lupine Lupinus excubitus var. hallii 3 / 1 4
0.83 l 115 field horsetail Equisetum arvense 10 / 2 2
r 116 San Diego pea Lathyrus vestitus var. alefeldii 3 / 3 15
0.84 Cross Doane Creek
l 117 little spring beauty Claytonia exigua ssp. exigua 3 / 1 3
r (western azalea, Rhododendron occidentale, across creek.)
l 118 narrowleaf bedstraw Galium angustifolium ssp. angustifolium / 41
r 119 western dogwood Cornus sericea ssp. occidentalis / 1
l 120 ssp California fuchsia Epilobium canum / 11
0.94 l Check for different plant like Penstemon here, but smaller-flowered
0.95 l 121 ssp Fendler's meadow-rue Thalictrum fendleri var. fendleri 5 / 1 2
0.96 b 122 western azalea Rhododendron occidentale 5 / 2 2
0.96 c 123 turion duckweed Lemna turionifera 99 / 1 1
0.96 Check for paintbrush off-trail up slope, and a very hairy/fuzzy, tall plant in the water with bloom buds just starting on 6/26/04.
0.96 End of Weir Trail at Pond upstream of the Weir; lowest point on route, elevation 4440 feet (1355 m). Turnaround.
1.10 Y-jct. Go left on connector to Lower Doane Valley Trail instead of continuing back on the Weir Trail.
124 ponderosa pine Pinus ponderosa⁺ / 3
125 Jeffrey pine Pinus jeffreyi⁺ / 18
126 coast live oak Quercus agrifolia var. agrifolia⁺ / 33
127 slender cinquefoil Potentilla gracilis var. fastigiata 5 / 1 1
r 128 blue-eyed grass Sisyrinchium bellum / 13
l 129 elk thistle Cirsium scariosum 1 / 1 5
1.40 Jct. Lower Doane Valley Trail. Go left on it for a short distance for a optional brief excursion, not counted in the mileage in the rest of the guide
130 deergrass Muhlenbergia rigens / 12
r 131 western buttercup Ranunculus occidentalis⁺ 5 / 1 6
132 sp purslane speedwell Veronica peregrina ssp. xalapensis / 2
1.45 End excursion westward; turn around and head up Lower Doane Valley Trail to the campground.
1.40 Back at the previous jct. with the Weir Trail. Continue straight. Note that the mileage now does not include the previous optional excursion.
l 133 California meadow barley Hordeum brachyantherum ssp. californicum / 1
r 134 *English plantain Plantago lanceolata⁺ / 15
1.43 b 135 basketbush Rhus trilobata 5 / 2 16
r 136 purple clarkia Clarkia purpurea ssp. quadrivulnera / 15
l 137 grand mountain dandelion Agoseris grandiflora / 8
r 138 common linanthus Linanthus parviflorus 10 / 3 8
139 southern coast live oak Quercus agrifolia var. oxyadenia / 6
1.55 ? 140 sapphire woolly-star? Eriastrum sapphirinum? 1 / 1
1.55 Jct. French Valley Trail.
l 141 California buckwheat Eriogonum fasciculatum var. foliolosum / 39
1.58 l 142 spear-leaved mountain dandelion Agoseris retrorsa / 11
1.60 l 143 (Alaska rein orchid, Piperia unalascensis)
1.62 l 144 whorledleaf penstemon Keckiella ternata var. ternata / 5
l 145 wide-throated yellow monkeyflower Mimulus brevipes 10 / 1 6
l 146 imbricate phacelia Phacelia imbricata ssp. patula⁺ / 14
1.63 l 147 bristly bird's beak Cordylanthus rigidus ssp. setigerus / 21
1.65 (Look for spotted coralroot, Corallorhiza maculata offtrail under heavy shade of trees)
l 148 slender madia Madia gracilis / 9
l 149 Chinese houses Collinsia heterophylla / 10
l 150 scarlet bugler Penstemon centranthifolius 1 / 1 7
l 151 sp common plantain? Plantago major? /
152 Orcutt's brome Bromus orcuttianus / 6
1.72 "Low Bridge" under a fallen tree.
1.77 r 153 *slender wild oats Avena barbata 10 / 1 25
1.78 l 154 chaparral whitethorn Ceanothus leucodermis 3 / 1 12
1.79 l 155 strigose lotus Lotus strigosus 1 / 1 25
1.80 r Jct. other end of Doane Valley Nature Trail.
1.84 Jct. campground; highest elevation on route, ~4680 feet (1425 m); turn right to return to trailhead.
2.08 End guide back at trailhead.

Comments On Specific Species

Erigeron foliosus var. foliosus. These plants are different from the usual lower-elevation plants that are tall green plants with many erect stems and green glabrous filiform leaves, which was the former E. foliosus var. stenophyllus. These plants are shorter, with wider grayer leaves and only a few ascending stems, and are the former E. foliosus var. foliosus. The JM combined both of these into the var. foliosus, although they are striking different in appearance.
Myosotis discolor and Dianthus barbatus ssp. barbatus. As far as we know, these plants are the only occurrence of these taxa in the wild in Southern California.
Myosotis discolor: Although the Jepson Manual lists the distribution for this taxon as CA-FP, it was not even present in the A Flora of Southern California by Munz, and there are no SMASCH records in Southern California. We have vouchered this occurrence (Wayne Armstrong, #1340, collected by Jane Strong, Tom Chester & W.P. Armstrong, 22 June 2003, which will be deposited with the San Diego Natural History Museum). See Wayne's photograph of the voucher.
Dianthus barbatus ssp. barbatus: The JM lists the distribution for this taxon as NW, CaRF, CCo. However, Beauchamp (1986) lists it as a garden escape at Summit Grove, Palomar Mountain. We don't know precisely where Summit Grove is; if any reader does, please let us know.
It is of course highly suspicious that the only two occurrences of these cultivated plants appear in the same spot. It seems likely to us that there used to be a homesite near this location, and these taxa are remnants from that.
Sidalcea malvaeflora ssp. sparsifolia. This occurrence will only be counted as a new taxon if the previous baby plant turns out to be a different id.
Pinus ponderosa, Pinus jeffreyi. Both species are present here, which can best be distinguished by the pine cones: prickly Ponderosa; gentle Jeffrey.
Quercus agrifolia var. agrifolia and var. oxyadenia. Both subspecies are present here, which are distinguished by the underneath of the leaves. Variety agrifolia has nearly glabrous lower leaf surfaces; var. oxyadenia has densely hairy lower leaf surfaces.
Ranunculus occidentalis. These plants look identical to the Ranunculus occidentalis at the Santa Rosa Plateau, with mostly 5 petals that are 1-2 times as long as wide. They are clearly distinct from the Ranunculus californicus seen at the East Grade Project Trail, at Laurel Canyon in the Laguna Coast Wilderness Park, and at Kelly Ditch Trail in the Cuyamaca Mountains. All of these Ranunculus californicus populations have flowers with mostly eight or more petals, which are at least twice as long as wide.
This population is the second population of Ranunculus occidentalis identified to occur south of the Tehachapis. See Ranunculus occidentalis, Vernal Pool Trail.
Plantago lanceolata. This taxon was observed earlier in the trail, but its location was not recorded.
Phacelia imbricata ssp. patula. The plants all had leaves with zero lobes, instead of the usual 3-7, even at initial flowering.

Number of Trails Containing A Taxon	Number Of Taxa On This Trail	% of Taxa On This Trail
1	18	13%
2	14	10%
3	10	7%
4	9	7%
5	9	7%

1-5	60	43%
6-10	28	20%
11-15	20	14%
16-20	8	6%
21-25	9	7%
26-30	2	1%
31-35	4	3%
36-40	6	4%
41-45	1	1%
Total Taxa	138	100%

Visit Date	Visit #	# taxa	# "?"	# "sp"	# "~"	# "ssp"
6/21/2003	1	127	3	23	6	7
6/30/2003	2	134	3	19	4	6
7/3/2003	3	146	7	20	6	6
6/25/2004	4	155	7	15	9	7

Mile	S	#	id?	Common Name	Latin Name	#here	#all
0.00				Begin Weir / Doane Valley Nature Trail at southwest corner of Doane Pond Parking Area; elevation ~4660 feet (1420 m). Beyond mile 0.27, this guide is not our usual Trail Plant Guide; it lists only some of the plants along the route noted on several fairly high-speed walks. Many of the first occurrences of these species are earlier than noted here.
0.00	b	1		*redstem filaree	Erodium cicutarium	/	40
0.00	b	2		Spanish clover	Lotus purshianus var. purshianus	50 / 5	16
0.00	b	3		*downy brome	Bromus tectorum	/	19
0.00	l	4		dwarf lupine	Lupinus bicolor	/	19
0.00	b	5		*shortpod mustard	Hirschfeldia incana	/	40
0.00	c	6		*knotweed	Polygonum arenastrum	/	9
0.00	r	7		wild tarragon	Artemisia dracunculus	/	20
0.00	l	8		*pineapple weed	Chamomilla suaveolens	/	14
0.00	r	9		California-aster	Lessingia filaginifolia var. filaginifolia	/	40
0.00	r	10		*soft chess	Bromus hordeaceus	/	28
0.00	r	11		*wall bedstraw	Galium parisiense	/	4
0.00	r	12		hoary coffeeberry	Rhamnus tomentella ssp. tomentella	1 / 1	2
0.00	r			Brochure box containing a Guide to the Doane Valley Nature Trail
0.00	l			Sign: "Doane Valley Nature Trail; Weir 1.2 mi; Baptist Trail 0.5 mi; French Creek 1.2 mi; Lookout 2.5 mi"
0.00	b	13		stinging nettle	Urtica dioica ssp. holosericea	99 / 9	8
0.00	l			Signpost "1" for stinging nettle, Urtica dioica ssp. holosericea.
0.01	l	14		arroyo willow	Salix lasiolepis	10 / 2	27
0.01	r	15		Mexican rush	Juncus mexicanus	99 / 5	9
0.01	r	16	~	*common mullein	Verbascum thapsus	2 / 2	3
0.01	l	17	sp	Pacific rush?	Juncus effusus var. pacificus?	/	2
0.01	l	18		California wild rose	Rosa californica	40 / 9	11
0.01	l	19	~	*Italian thistle	Carduus pycnocephalus	20 / 4	12
0.01	l	20		winter cress	Barbarea orthoceras	/	5
0.01	b	21	sp	musk monkeyflower?	Mimulus moschatus?	/
0.01	r	22		popcorn flower	Cryptantha intermedia	/	21
0.01	b	23	~	rigid hedge-nettle	Stachys ajugoides var. rigida	10 / 2	3
0.01	r	24	~	virgin's bower	Clematis ligusticifolia	5 / 5	8
0.01	r	25	?	bluegrass?	Poa sp.?	/
0.01	l	26		dock?	Rumex sp.?	/
0.01				Cross creek.
0.01	l	27		woodland strawberry	Fragaria vesca	30 / 5	2
0.01	r	28		sticky cinquefoil	Potentilla glandulosa ssp. reflexa	30 / 5	8
0.01	r	29	~	Fremont's goosefoot	Chenopodium fremontii	/	10
0.01	l	30		California black oak	Quercus kelloggii	/	11
0.01	b	31		branching phacelia	Phacelia ramosissima var. latifolia	/	25
0.02	l	32		incense-cedar	Calocedrus decurrens	99 / 9	11
0.02	l	33	?	unk grass like melica
0.02	r	34		*common dandelion	Taraxacum officinale	/	3
0.02	r			Signpost "2" for wild rose, Rosa californica.
	l	35		canyon live oak	Quercus chrysolepis	/	19
0.04				Cross another creek on a bridge.
0.05				Cross paved park road
0.05	r	36	ssp	blue wildrye	Elymus glaucus	20 / 4	5
0.05	r	37	~	goldenrod	Solidago californica	/	25
0.06	r	38	?	baby checkerbloom?	Sidalcea malviflora ssp. sparsifolia?	/	14
0.06	l	39		California blackberry	Rubus ursinus	/	13
0.06	r	40		mountain sweet-cicely	Osmorhiza chilensis	50 / 5	4
0.07	l			Signpost "3" for "Doane Creek, pronounced "doe-n", containing water from several springs.
0.08				Cross Doane Creek
0.08	r	41	~	mountain bog bulrush	Scirpus microcarpus	/	1
0.08	r	42		mountain pink currant	Ribes nevadense	10 / 3	6
0.08	l			Check for different Juncus.
0.08	l	43	sp	creeping snowberry	Symphoricarpos mollis	/	6
0.09	l	44		common bedstraw	Galium aparine	/	25
0.09	l	45		bracken	Pteridium aquilinum var. pubescens	/	8
0.09	r	46	?	unk tree
0.09	l	47		Utah service-berry	Amelanchier utahensis	/	7
0.09	r	48	sp	velvet ash?	Fraxinus velutina?	/
0.10	l			Signpost "4" for serviceberry, Amelanchier utahensis.
0.10	r	49		thimbleberry	Rubus parviflorus	30 / 5	2
0.10	l	50		hairy honeysuckle	Lonicera hispidula var. vacillans	1 / 1	1
0.11	l			Signpost "5" for "Life in a Log".
0.12	r	51		poison oak	Toxicodendron diversilobum	99 / 9	33
0.12	l	52	sp	Child's collinsia	Collinsia childii	99 / 5	1
0.12	r	53		*ripgut brome	Bromus diandrus	/	38
	l	54	sp	Sierra gooseberry?	Ribes roezlii var. roezlii?	2 / 2
0.13	r	55	?	unk grass
	l	56		diamond-petaled clarkia	Clarkia rhomboidea	50 / 7	4
0.14	r			Signpost "6" for thimbleberry, Rubus parviflorus.
0.16	r			Signpost "7" for white fir, Abies concolor.
0.16	l			(Fendler's meadow-rue, Thalictrum fendleri var. fendleri)
0.16	l	57		woolly angelica	Angelica tomentosa	30 / 5	1
0.16	r	58		white fir	Abies concolor	/	17
0.18	l	59		blue elderberry	Sambucus mexicana	/	37
0.18	l			Signpost "8" for "Landslide! From 80 inches of rain in 1992-1993". Note the huge stone crib / wall constructed above trail.
0.18	l	60	sp	groundsmoke	Gayophytum diffusum ssp. parviflorum	50 / 3	10
0.18	r	61		miner's lettuce	Claytonia perfoliata ssp. perfoliata	/	14
0.18	l	62	sp	one-sided bluegrass	Poa secunda ssp. secunda	/	21
0.18	r	63		box elder	Acer negundo var. californicum	/	1
0.18	l	64		wild pepper-grass	Lepidium virginicum var. pubescens	/	4
0.19	r	65		large-flowered collomia	Collomia grandiflora	/	3
0.20	l	66		western columbine	Aquilegia formosa	5 / 1	4
0.20	l			Signpost "9" for Parish's burning bush, Euonymus occidentalis var. parishii.
0.20	l	67		Parish's burning bush	Euonymus occidentalis var. parishii	10 / 3	1
0.24	r			(white alder, Alnus rhombifolia)
0.25	r			A small "chair" carved into a stump.
0.26	l			Signpost "10" for "Berry Alley" - mountain pink currant (Ribes nevadense), white-bark raspberry (Rubus leucodermis), and wild strawberry (Fragaria vesca).
0.26	l	68		white-bark raspberry	Rubus leucodermis	1 / 1	3
0.27				Y-jct. Go right on Doane Valley Nature Trail for a optional brief excursion, not counted in the mileage in the rest of the guide. (Left is Weir Trail, also signed to Boucher Lookout)
	l	69		phlox-leaved bedstraw	Galium andrewsii ssp. andrewsii	3 / 3	4
	r	70	sp	sedge with triangular fruit	Carex sp.	/
0.33	r			Signpost "11" for "Lichens and Mosses"
0.35	l			Signpost "12" for white alder, Alnus rhombifolia.
		71		white alder	Alnus rhombifolia	/	9
	l			Signpost "13" for "Plant Competition", the shading-out of plants underneath the forest canopy.
	r	72		whisker-brush	Linanthus ciliatus	20 / 2	5
	l			Signpost "14" for a huge "incense-cedar", Calocedrus decurrens. We measured this tree to be 72 feet tall, with a diameter at breast height of 7.1 feet, derived from its circumference of 22.4 feet. Please stay behind the fence to prevent compacting the soil and killing this tree.
	r	73		Parish' Jacumba milk-vetch	Astragalus douglasii var. parishii	10 / 3	3
	r	74	?	sticky lessingia	Lessingia glandulifera var. glandulifera	/	1
	r	75		mustang mint	Monardella lanceolata	20 / 2	3
	r	76		clustered field sedge	Carex praegracilis	/	2
	l	77	sp	suncup	Camissonia sp.	/
0.40	r	78		dove weed	Eremocarpus setigerus	/	12
				End excursion on Doane Valley Nature Trail; return to the Weir Trail by backtracking to the jct. at mile 0.27.
0.27	r			Back at the jct. with the Weir Trail. Go right on it. Some species from the excursion are also listed below, but not numbered as new species. Note that the mileage now does not include the previous optional excursion.
0.42	b			(ocellated Humboldt lily, Lilium humboldtii ssp. ocellatum
0.44	l	79		cliff sword fern	Polystichum imbricans ssp. curtum	2 / 2	1
0.55	l	80		Palmer's ceanothus	Ceanothus palmeri	10 / 5	5
0.61	l			Jct. trail to Overlook. Stay right.
0.61	r	81		spreading dogbane	Apocynum androsaemifolium	20 / 5	2
0.61	b	82	ssp	western vervain	Verbena lasiostachys var. scabrida	10 / 2	3
0.64	l			Note the fallen trunk, which begins with two separate trees that then merge, with growth rings around both of them after the merger.
0.64	l	83		Sierra Nevada lotus	Lotus nevadensis var. nevadensis	5 / 1	5
0.64	l			whisker-brush	Linanthus ciliatus	/
	l	84		California needlegrass	Achnatherum occidentale ssp. californicum	/	5
	b	85		mugwort	Artemisia douglasiana	30 / 5	25
	b	86	sp	sticky false-gilia	Allophyllum glutinosum	1 / 1	6
	b	87		yarrow	Achillea millefolium	30 / 5	10
0.67	r	88	?	unk like caulanthus?	?	/
0.68	l			mustang mint	Monardella lanceolata	/
0.70	r	89		leafy daisy	Erigeron foliosus var. foliosus⁺	5 / 2	32
0.71	r	90	ssp	(Eastwood manzanita, Arctostaphylos glandulosa ssp. zacaensis)
0.71	r	91		broad-leaved lotus	Lotus crassifolius var. crassifolius	10 / 2	5
0.71	r	92	ssp	*rattail fescue	Vulpia myuros	/	8
	l	93		white everlasting	Gnaphalium canescens ssp. microcephalum	/	31
	l	94		western choke-cherry	Prunus virginiana var. demissa	/	6
0.78	r	95		California coffeeberry	Rhamnus californica ssp. californica	/	12
	l	96	ssp	squirreltail	Elymus elymoides	20 / 5	6
0.81	l	97		Cleveland's horkelia	Horkelia clevelandii	5 / 1	2
0.81	l			(western wallflower, Erysimum capitatum ssp. capitatum)
0.81	l	98	~	California milkweed	Asclepias californica	10 / 2	2
0.81	r	99		water cress	Rorippa nasturtium-aquaticum	10 / 2	9
0.81	l	100		*spearmint	Mentha spicata var. spicata	5 / 1	2
0.81	l	101	sp	buckwheat	Eriogonum sp.	/
0.81	r	102		creeping leather root	Hoita orbicularis	5 / 1	1
0.81	r	103		Pacific oenanthe	Oenanthe sarmentosa	5 / 1	1
0.81	l	104		cows clover	Trifolium wormskioldii	/	4
0.81	l	105		small-head field clover	Trifolium microcephalum	/	4
0.81	l	106		streambank Lotus	Lotus oblongifolius var. oblongifolius	20 / 1	2
0.81	r	107		common monkeyflower	Mimulus guttatus	20 / 2	7
0.81	l	108		*forget-me-not	Myosotis discolor⁺	10 / 1	1
0.81	l	109	sp	upright knotweed	Polygonum sp.	1 / 1
0.81	l	110		Scouler's St. Johnswort	Hypericum formosum var. scouleri	5 / 1	1
0.81	l	111		*corn speedwell	Veronica arvensis	5 / 1	1
0.81	l	112	~	willowherb	Epilobium ciliatum ssp. ciliatum	/	15
0.81				Cross Doane Creek
0.81	r	113		*sweet william	Dianthus barbatus ssp. barbatus⁺	1 / 1	1
0.82				Y-jct. Go left on Weir Trail. (Trail to right is connector to Lower Doane Valley Trail)
	r			checkerbloom	Sidalcea malviflora ssp. sparsifolia⁺	/
0.82	r	114		bush lupine	Lupinus excubitus var. hallii	3 / 1	4
0.83	l	115		field horsetail	Equisetum arvense	10 / 2	2
	r	116		San Diego pea	Lathyrus vestitus var. alefeldii	3 / 3	15
0.84				Cross Doane Creek
	l	117		little spring beauty	Claytonia exigua ssp. exigua	3 / 1	3
	r			(western azalea, Rhododendron occidentale, across creek.)
	l	118		narrowleaf bedstraw	Galium angustifolium ssp. angustifolium	/	41
	r	119		western dogwood	Cornus sericea ssp. occidentalis	/	1
	l	120	ssp	California fuchsia	Epilobium canum	/	11
0.94	l			Check for different plant like Penstemon here, but smaller-flowered
0.95	l	121	ssp	Fendler's meadow-rue	Thalictrum fendleri var. fendleri	5 / 1	2
0.96	b	122		western azalea	Rhododendron occidentale	5 / 2	2
0.96	c	123		turion duckweed	Lemna turionifera	99 / 1	1
0.96				Check for paintbrush off-trail up slope, and a very hairy/fuzzy, tall plant in the water with bloom buds just starting on 6/26/04.
0.96				End of Weir Trail at Pond upstream of the Weir; lowest point on route, elevation 4440 feet (1355 m). Turnaround.
1.10				Y-jct. Go left on connector to Lower Doane Valley Trail instead of continuing back on the Weir Trail.
		124		ponderosa pine	Pinus ponderosa⁺	/	3
		125		Jeffrey pine	Pinus jeffreyi⁺	/	18
		126		coast live oak	Quercus agrifolia var. agrifolia⁺	/	33
		127		slender cinquefoil	Potentilla gracilis var. fastigiata	5 / 1	1
	r	128		blue-eyed grass	Sisyrinchium bellum	/	13
	l	129		elk thistle	Cirsium scariosum	1 / 1	5
1.40				Jct. Lower Doane Valley Trail. Go left on it for a short distance for a optional brief excursion, not counted in the mileage in the rest of the guide
		130		deergrass	Muhlenbergia rigens	/	12
	r	131		western buttercup	Ranunculus occidentalis⁺	5 / 1	6
		132	sp	purslane speedwell	Veronica peregrina ssp. xalapensis	/	2
1.45				End excursion westward; turn around and head up Lower Doane Valley Trail to the campground.
1.40				Back at the previous jct. with the Weir Trail. Continue straight. Note that the mileage now does not include the previous optional excursion.
	l	133		California meadow barley	Hordeum brachyantherum ssp. californicum	/	1
	r	134		*English plantain	Plantago lanceolata⁺	/	15
1.43	b	135		basketbush	Rhus trilobata	5 / 2	16
	r	136		purple clarkia	Clarkia purpurea ssp. quadrivulnera	/	15
	l	137		grand mountain dandelion	Agoseris grandiflora	/	8
	r	138		common linanthus	Linanthus parviflorus	10 / 3	8
		139		southern coast live oak	Quercus agrifolia var. oxyadenia	/	6
1.55	?	140		sapphire woolly-star?	Eriastrum sapphirinum?	1 / 1
1.55				Jct. French Valley Trail.
	l	141		California buckwheat	Eriogonum fasciculatum var. foliolosum	/	39
1.58	l	142		spear-leaved mountain dandelion	Agoseris retrorsa	/	11
1.60	l	143		(Alaska rein orchid, Piperia unalascensis)
1.62	l	144		whorledleaf penstemon	Keckiella ternata var. ternata	/	5
	l	145		wide-throated yellow monkeyflower	Mimulus brevipes	10 / 1	6
	l	146		imbricate phacelia	Phacelia imbricata ssp. patula⁺	/	14
1.63	l	147		bristly bird's beak	Cordylanthus rigidus ssp. setigerus	/	21
1.65				(Look for spotted coralroot, Corallorhiza maculata offtrail under heavy shade of trees)
	l	148		slender madia	Madia gracilis	/	9
	l	149		Chinese houses	Collinsia heterophylla	/	10
	l	150		scarlet bugler	Penstemon centranthifolius	1 / 1	7
	l	151	sp	common plantain?	Plantago major?	/
		152		Orcutt's brome	Bromus orcuttianus	/	6
1.72				"Low Bridge" under a fallen tree.
1.77	r	153		*slender wild oats	Avena barbata	10 / 1	25
1.78	l	154		chaparral whitethorn	Ceanothus leucodermis	3 / 1	12
1.79	l	155		strigose lotus	Lotus strigosus	1 / 1	25
1.80	r			Jct. other end of Doane Valley Nature Trail.
1.84				Jct. campground; highest elevation on route, ~4680 feet (1425 m); turn right to return to trailhead.
2.08				End guide back at trailhead.

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Plants of Southern California: Trail Guides

Copyright © 2003-2004 by Tom Chester, Jane Strong, and Wayne Armstrong.
Permission is freely granted to reproduce any or all of this page as long as credit is given to us at this source:
http://tchester.org/sd/plants/guides/palomar/weir_loop.html
Comments and feedback: Tom Chester | Jane Strong | Wayne Armstrong
Updated 29 June 2004.