Plant Guide to Stone Creek Loop, Santa Margarita Ecological Reserve

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

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

This loop trip is 1.3 miles round trip, with about 200 feet of elevation gain and loss. Most of the trip is very gentle in elevation change, following a creek. There is just one short steep hill with about 60 feet of elevation gain.
Highlights of This Trail

Some of the botanical highlights of this trail are:

Number of Unique Taxa On This Trail

The following histogram gives the number of trails in my database that contain each taxon on this trail. I had 90 trails in my database when this histogram was made; 4 of those trails, including this one, are at the Santa Margarita Ecological Reserve. A number of "1" means the taxon has only been found on this trail among the trails in my database; numbers of "4" or smaller may indicate taxa found only at the Santa Margarita Ecological Reserve.

Number of Trails
Containing A Taxon Number Of Taxa
On This Trail % of Taxa
On This Trail
1 1 1%
2 2 1%
3 4 2%
4 0 0%
5 4 2%

1-5 11 7%
6-10 19 12%
11-15 27 16%
16-20 23 14%
21-25 25 15%
26-30 15 9%
31-35 11 7%
36-40 10 6%
41-45 14 8%
46-50 4 2%
51-55 6 4%
Total Taxa 165 100%

I found 2 additional species not in the above table, since they have not yet been fully identified. 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.
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"
5/4/2003 1 112 7 7 3 3
12/18/2003 2 115 3 8 2 2
2/13/2004 3 141 3 8 6 3
4/3/2005 4 166 2 5 5 4
4/15/2005 5 165 1 6 5 4
8/20/2005 6 167 1 4 7 4

The 5/4/03 survey was only complete for the first 0.10 mile, with only common species noted from memory after that point. The 12/18/03 survey was only up to mile 0.24. The 4/15/05 fieldwork was only incidental to vouchering some plants in the first 0.2 mile. The 8/20/05 fieldwork was only incident to vouchering some plants from mile 0.2 to the end.
I thank Paula Knoll and her Canyoneer buddies for helping with the fieldwork on 4/3/05.
Botanical Trip Reports

13 February 2004
The Plant Guide

Version for printing, without lines and other text on this page (7 pages)
This guide has an extra character before the mile for some taxa, which indicates whether it has been vouchered (V), needs a better voucher (v), or needs a voucher for the SMER flora (N).

mile s # id Common Name Latin Name #here #all
0.00 Begin plant guide at the first laurel sumac on the right just south of the parking area; elevation 560 feet. This location is about 60 feet south of the north edge of San Diego County.
0.00 r 1 laurel sumac Malosma laurina 20 / 9 42
0.00 r 2 *shortpod mustard Hirschfeldia incana / 51
N0.00 r 3 *red brome Bromus madritensis ssp. rubens / 52
v0.00 r 4 cotton-batting plant Gnaphalium stramineum 30 / 5 15
0.00 r 5 California sagebrush Artemisia californica 40 / 9 47
0.00 r 6 *sourclover Melilotus indicus / 24
0.00 b 7 *English plantain Plantago lanceolata 20 / 4 19
V0.00 r 8 *Mediterranean schismus Schismus barbatus 20 / 4 22
N0.00 r 9 rough-seeded blue toad-flax Linaria canadensis var. texana / 10
0.00 r 10 dove weed Eremocarpus setigerus / 24
0.00 r 11 blue elderberry Sambucus mexicana 20 / 9 48
0.00 r 12 California everlasting Gnaphalium californicum 10 / 9 42
V0.00 r 13 bicolored everlasting Gnaphalium bicolor 10 / 9 29
V0.00 r 14 eucrypta Eucrypta chrysanthemifolia var. chrysanthemifolia 20 / 5 25
0.00 r 15 *horehound Marrubium vulgare 2 / 2 32
0.00 r 16 black sage Salvia mellifera 30 / 5 40
0.00 r 17 *tocalote Centaurea melitensis 20 / 3 45
v0.00 r 18 purple everlasting Gnaphalium purpureum 1 / 1 5
N0.00 r 19 minute-flowered cryptantha Cryptantha micromeres 3 / 2 6
0.00 r 20 *scarlet pimpernel Anagallis arvensis / 32
N0.00 r 21 *field hedge-parsley Torilis arvensis 99 / 9 6
0.00 r 22 southern honeysuckle Lonicera subspicata var. denudata 30 / 5 40
N0.00 r 23 California goosefoot Chenopodium californicum 3 / 1 3
0.00 r (sugar bush, Rhus ovata)
V0.00 r 24 wild-cucumber Marah macrocarpus var. macrocarpus 10 / 9 44
N0.00 r 25 cobwebby thistle Cirsium occidentale var. occidentale 2 / 2 10
0.00 r 26 *Russian thistle Salsola tragus 20 / 4 25
0.00 r 27 chia Salvia columbariae 40 / 5 21
V0.00 l 28 *rattail fescue Vulpia myuros var. myuros / 20
0.00 l 29 popcorn flower Cryptantha intermedia / 27
0.00 l 30 California plantain Plantago erecta 50 / 4 13
v0.00 l 31 robust sun-cup Camissonia robusta / 1
0.00 b 32 coast-range melic Melica imperfecta 30 / 9 43
N0.00 r 33 ~ *roundleaf fluellin Kickxia spuria / 2
0.00 r (California chicory, Rafinesquia californica)
0.00 r 34 saw-toothed goldenbush Hazardia squarrosa var. grindelioides 20 / 9 35
V0.00 l 35 horseweed Conyza canadensis / 35
0.01 Cross small drainage.
0.01 l 36 slender tarweed Hemizonia fasciculata / 17
0.02 r (chaparral beard-tongue, Keckiella antirrhinoides var. antirrhinoides)
0.02 l 37 chaparral yucca Yucca whipplei 3 / 3 31
0.02 l 38 *sow thistle Sonchus oleraceus / 41
N0.02 b 39 Torrey's scrub oak Quercus acutidens 20 / 5 26
0.02 r (bush monkeyflower, Mimulus aurantiacus)
0.02 l 40 ssp purple snapdragon Antirrhinum nuttallianum ssp. nuttallianum 50 / 5 18
0.03 l 41 mission manzanita Xylococcus bicolor 2 / 2 14
0.03 b 42 *narrowleaf filago Filago gallica / 45
N0.04 l 43 climbing bedstraw Galium nuttallii ssp. nuttallii 20 / 9 30
N0.04 l 44 *petty spurge Euphorbia peplus 3 / 1 10
0.04 l 45 purple head Acourtia microcephala 3 / 2 19
0.04 l 46 golden yarrow Eriophyllum confertiflorum var. confertiflorum 10 / 9 55
0.04 l 47 blue dicks Dichelostemma capitatum ssp. capitatum / 46
0.04 r 48 telegraph weed Heterotheca grandiflora 10 / 9 35
0.04 r 49 Parish's purple nightshade Solanum parishii 3 / 3 20
0.04 l 50 *California burclover Medicago polymorpha 99 / 9 40
0.04 l 51 *soft chess Bromus hordeaceus / 40
0.04 r 52 *redstem filaree Erodium cicutarium 10 / 1 55
0.04 b 53 silver puffs Uropappus lindleyi / 26
0.04 l 54 strigose lotus Lotus strigosus / 33
0.04 r 55 short-winged deerweed Lotus scoparius var. brevialatus 10 / 9 22
V0.04 l 56 bush monkeyflower Mimulus aurantiacus 20 / 9 42
0.04 l 57 California chicory Rafinesquia californica / 22
V0.04 r 58 slender wreathplant Stephanomeria exigua ssp. deanei 10 / 4 13
0.04 r 59 *smooth cat's ear Hypochaeris glabra / 35
0.04 r 60 threadstem Pterostegia drymarioides / 30
0.04 l 61 *common groundsel Senecio vulgaris / 18
0.04 l 62 sp miner's lettuce Claytonia perfoliata ssp. mexicana?⁺ /
V0.04 l 63 *foxtail barley Hordeum murinum ssp. leporinum / 14
r 64 leafy daisy Erigeron foliosus var. foliosus 5 / 5 43
V0.06 l 65 canyon clarkia Clarkia epilobioides 10 / 2 11
V0.06 r 66 ssp yellow pincushion Chaenactis glabriuscula var. glabriuscula / 13
l Check for pellitory, Parietaria hespera var. hespera
N0.06 l 67 *prickly sow thistle Sonchus asper ssp. asper / 30
0.07 l 68 dwarf lupine Lupinus bicolor / 29
0.07 r 69 San Diego birdsfoot lotus Lotus hamatus / 24
0.07 r 70 chaparral beard-tongue Keckiella antirrhinoides var. antirrhinoides 3 / 2 10
0.07 r 71 hollyleaf redberry Rhamnus ilicifolia 20 / 9 43
0.07 r Telephone pole
0.07 l 72 wide-throated yellow monkeyflower Mimulus brevipes 5 / 1 12
0.08 l 73 wild canterbury bells Phacelia minor / 21
0.08 l (white sage, Salvia apiana)
N l 74 California buckwheat Eriogonum fasciculatum var. foliolosum 10 / 5 51
l (California four o'clock, Mirabilis californica)
0.08 l 75 Coulter's lupine Lupinus sparsiflorus 10 / 2 11
0.09 l 76 *slender wild oats Avena barbata / 39
0.09 l 77 meally white pincushion Chaenactis artemisiifolia / 14
0.10 l 78 narrowleaf bedstraw Galium angustifolium ssp. angustifolium 1 / 1 48
0.11 r 79 annual sunflower Helianthus annuus 1 / 1 12
V0.12 l 80 snapdragon campion Silene antirrhina 3 / 1 7
0.12 l 81 *windmill pink Silene gallica / 33
V0.12 l 82 *Oriental mustard Sisymbrium orientale / 12
0.12 l 83 California poppy Eschscholzia californica / 29
N r 84 sand cress Calyptridium monandrum / 11
0.12 b 85 San Diego morning-glory Calystegia macrostegia ssp. tenuifolia 10 / 9 18
0.12 r 86 coast live oak Quercus agrifolia var. agrifolia 20 / 9 42
0.12 l 87 white sage Salvia apiana 20 / 9 38
0.13 l (coffee fern, Pellaea andromedifolia)
N0.13 l 88 rattlesnake weed Daucus pusillus / 28
0.13 l 89 ~ wild celery Apiastrum angustifolium / 14
N0.13 l 90 California chalk lettuce Dudleya pulverulenta ssp. pulverulenta 3 / 2 10
N0.13 l 91 goldback fern Pentagramma triangularis ssp. triangularis 10 / 3 24
V0.13 r 92 *Natal grass Rhynchelytrum repens 1 / 1 3
0.15 Road curves left 45°.
0.15 r 93 ~ California dodder Cuscuta californica var. californica 1 / 1 17
V0.16 94 south coast morning-glory Calystegia macrostegia ssp. intermedia 5 / 2 19
v0.16 l 95 narrow-leaved miner's lettuce Claytonia parviflora ssp. parviflora⁺ / 19
V0.16 r 96 *smilo grass Piptatherum miliaceum 20 / 5 19
N0.16 r 97 *common chickweed Stellaria media / 25
0.16 l 98 California four o'clock Mirabilis californica 1 / 1 23
V0.17 l 99 white everlasting Gnaphalium canescens ssp. microcephalum 5 / 5 36
N0.17 r 100 *Italian thistle Carduus pycnocephalus 20 / 5 21
V0.18 r 101 fragrant everlasting Gnaphalium canescens ssp. beneolens / 23
0.18 Road curves right 45°.
0.18 l 102 stinging lupine Lupinus hirsutissimus 1 / 1 15
0.18 l 103 angel's gilia Gilia angelensis 5 / 1 14
0.19 r 104 branching phacelia Phacelia ramosissima var. latifolia 10 / 9 34
0.20 b 105 white nightshade Solanum douglasii 4 / 4 15
0.21 r 106 collar lupine Lupinus truncatus 10 / 2 24
0.21 r 107 ~ Emory's baccharis Baccharis emoryi 2 / 2 8
0.21 r Jct. path to Santa Margarita River.
V0.22 r 108 arrow-weed Pluchea sericea 2 / 1 2
0.22 r 109 chaparral bush mallow Malacothamnus fasciculatus 2 / 1 14
0.22 r 110 western ragweed Ambrosia psilostachya 20 / 5 36
0.22 l (arroyo willow, Salix lasiolepis)
0.22 l 111 wild grape Vitis girdiana 50 / 9 7
0.22 l 112 mule fat Baccharis salicifolia 2 / 1 40
V0.22 l 113 pit-seed goosefoot Chenopodium berlandieri 5 / 1 7
0.22 r (western sycamore, Platanus racemosa)
0.22 r (mugwort, Artemisia douglasiana)
0.23 r 114 California blackberry Rubus ursinus 20 / 4 13
0.23 Cross Stone Creek; elevation 460 feet.
0.23 l 115 heartleaf penstemon Keckiella cordifolia 20 / 5 27
N0.23 l 116 sp California brome Bromus carinatus var. carinatus 2 / 1 24
0.23 r 117 *ripgut brome Bromus diandrus / 51
V0.23 r 118 *tree tobacco Nicotiana glauca⁺ 0 / 1 19
0.24 l 119 poison oak Toxicodendron diversilobum 99 / 9 43
0.24 r 120 silky lotus Lotus heermannii var. heermannii 5 / 3 6
0.24 l 121 *prickly lettuce Lactuca serriola 1 / 1 42
0.24 l Jct. road along Stone Creek; turn left and take it.
0.24 r 122 fiesta flower Pholistoma auritum var. auritum 20 / 1 11
0.24 r 123 common bedstraw Galium aparine 30 / 2 38
0.24 l 124 miner's lettuce Claytonia perfoliata ssp. perfoliata 20 / 2 22
0.25 Pass through two gates.
0.25 r 125 coffee fern Pellaea andromedifolia 20 / 5 22
0.26 r 126 sp virgin's bower Clematis pauciflora 30 / 4 12
N0.26 r 127 triangular-fruit sedge Carex triquetra / 17
0.26 128 sugar bush Rhus ovata 20 / 9 25
V0.27 b 129 Fish's milkwort Polygala cornuta var. fishiae 50 / 9 5
0.29 l 130 western sycamore Platanus racemosa 10 / 9 27
0.29 r 131 mugwort Artemisia douglasiana 10 / 2 28
0.29 r 132 giant wild-rye Leymus condensatus 10 / 5 27
0.30 l 133 San Diego sedge Carex spissa 30 / 9 5
V0.31 l 134 ~ basket rush Juncus textilis 5 / 1 5
0.32 Trail curves left.
0.32 l (oleander, Nerium oleander)
0.35 Trail curves right 90°
0.37 l 135 ? unk rosette like mullein ? 1 / 1
0.38 r 136 California polypody Polypodium californicum 20 / 3 16
V0.38 l 137 scarlet monkeyflower Mimulus cardinalis 5 / 2 12
0.38 Trail turns left 30°
0.39 r 138 toyon Heteromeles arbutifolia 1 / 1 44
0.39 r Plastic pipe marker "O.W.5"
0.40 r Jct. small drainage
0.41 l 139 basketbush Rhus trilobata / 24
0.41 l 140 California wild rose Rosa californica 2 / 1 11
N0.41 l 141 ssp sticky cinquefoil Potentilla glandulosa ssp. glandulosa 1 / 1 17
0.41 l 142 goldenrod Solidago californica 10 / 1 35
0.43 r Woodrat's nest high in tree
0.49 r 143 San Diego pea Lathyrus vestitus var. alefeldii 2 / 2 21
N0.51 r 144 Ramona lilac Ceanothus tomentosus var. olivaceus 1 / 1 9
0.51 Trails climbs a slight rise.
0.53 Leave grid C8 for San Diego County Plant Atlas; enter grid C9.
0.54 r 145 San Diego mountain mahogany Cercocarpus minutiflorus 1 / 1 12
0.54 r Jct. very small drainage
0.56 l 146 *fennel Foeniculum vulgare 2 / 2 13
0.56 l Plastic pipe marker "O.W.4"
N0.58 r 147 California sweet-cicely Osmorhiza brachypoda 30 / 2 6
0.59 Switchback right.
N0.59 r 148 Pacific sanicle Sanicula crassicaulis 10 / 3 20
0.59 l 149 bracken Pteridium aquilinum var. pubescens 5 / 1 9
0.59 l 150 red willow Salix laevigata 1 / 1 21
0.64 r Field of California sweet-cicely, Osmorhiza brachypoda.
0.69 l 151 *common plantain Plantago major 5 / 1 6
0.69 l 152 water cress Rorippa nasturtium-aquaticum 20 / 1 11
0.69 Cross Stone Creek; elevation ~555 feet.
0.69 l 153 ~ umbrella sedge Cyperus eragrostis 3 / 1 11
N0.70 r 154 ~ *whorled dock Rumex conglomeratus 5 / 1 9
V0.70 r 155 *umbrella plant Cyperus involucratus 3 / 1 3
N0.71 r 156 ssp Hooker's evening-primrose Oenothera elata ssp. hirsutissima 1 / 1 10
0.73 l 157 caterpillar phacelia Phacelia cicutaria var. hispida 5 / 1 16
N0.74 c 158 *Crete weed Hedypnois cretica 20 / 1 19
0.75 l 159 Bigelow's spike-moss Selaginella bigelovii 10 / 3 19
0.76 l 160 ladies fingers Dudleya edulis 1 / 1 9
0.76 l 161 bird's-foot fern Pellaea mucronata var. mucronata 1 / 1 30
V0.76 l 162 San Diego wreathplant Stephanomeria diegensis 3 / 1 21
N0.79 c 163 *Australian brass-buttons Cotula australis 20 / 1 17
0.80 l Jct small drainage
0.83 Leave San Diego County; Enter Riverside County.
0.88 Guide ends at intersection with road to South Field Station; elevation 580 feet. Turn left, go uphill and through the orchard to return to the beginning.

Species found on a previous trip, but without recorded locations:
164 southern Indian pink Silene laciniata ssp. major / 20
N 165 *hedge mustard Sisymbrium officinale / 20
v 166 sp slender-pod jewelflower Caulanthus heterophyllus var. pseudosimulans / 3
167 checkerbloom Sidalcea malviflora ssp. sparsifolia / 25

Comments On Specific Species

Claytonia perfoliata ssp. mexicana?, C. parviflora ssp. parviflora. The specimens at mile 0.16 are definitely C. parviflora ssp. parviflora. The specimens at mile 0.04 were missing most of their leaves on 4/3/05, but seem to be C. perfoliata ssp. mexicana. But the id will be qualified with a question mark until the leaves can be definitively observed.
Nicotiana glauca. I pulled this weed out of the ground on 2/13/04, and vouchered it. This is why the number of plants on the trail is now zero for this species.

Number of Trails Containing A Taxon	Number Of Taxa On This Trail	% of Taxa On This Trail
1	1	1%
2	2	1%
3	4	2%
4	0	0%
5	4	2%

1-5	11	7%
6-10	19	12%
11-15	27	16%
16-20	23	14%
21-25	25	15%
26-30	15	9%
31-35	11	7%
36-40	10	6%
41-45	14	8%
46-50	4	2%
51-55	6	4%
Total Taxa	165	100%

Visit Date	Visit #	# taxa	# "?"	# "sp"	# "~"	# "ssp"
5/4/2003	1	112	7	7	3	3
12/18/2003	2	115	3	8	2	2
2/13/2004	3	141	3	8	6	3
4/3/2005	4	166	2	5	5	4
4/15/2005	5	165	1	6	5	4
8/20/2005	6	167	1	4	7	4

mile	s	#	id	Common Name	Latin Name	#here	#all
0.00				Begin plant guide at the first laurel sumac on the right just south of the parking area; elevation 560 feet. This location is about 60 feet south of the north edge of San Diego County.
0.00	r	1		laurel sumac	Malosma laurina	20 / 9	42
0.00	r	2		*shortpod mustard	Hirschfeldia incana	/	51
N0.00	r	3		*red brome	Bromus madritensis ssp. rubens	/	52
v0.00	r	4		cotton-batting plant	Gnaphalium stramineum	30 / 5	15
0.00	r	5		California sagebrush	Artemisia californica	40 / 9	47
0.00	r	6		*sourclover	Melilotus indicus	/	24
0.00	b	7		*English plantain	Plantago lanceolata	20 / 4	19
V0.00	r	8		*Mediterranean schismus	Schismus barbatus	20 / 4	22
N0.00	r	9		rough-seeded blue toad-flax	Linaria canadensis var. texana	/	10
0.00	r	10		dove weed	Eremocarpus setigerus	/	24
0.00	r	11		blue elderberry	Sambucus mexicana	20 / 9	48
0.00	r	12		California everlasting	Gnaphalium californicum	10 / 9	42
V0.00	r	13		bicolored everlasting	Gnaphalium bicolor	10 / 9	29
V0.00	r	14		eucrypta	Eucrypta chrysanthemifolia var. chrysanthemifolia	20 / 5	25
0.00	r	15		*horehound	Marrubium vulgare	2 / 2	32
0.00	r	16		black sage	Salvia mellifera	30 / 5	40
0.00	r	17		*tocalote	Centaurea melitensis	20 / 3	45
v0.00	r	18		purple everlasting	Gnaphalium purpureum	1 / 1	5
N0.00	r	19		minute-flowered cryptantha	Cryptantha micromeres	3 / 2	6
0.00	r	20		*scarlet pimpernel	Anagallis arvensis	/	32
N0.00	r	21		*field hedge-parsley	Torilis arvensis	99 / 9	6
0.00	r	22		southern honeysuckle	Lonicera subspicata var. denudata	30 / 5	40
N0.00	r	23		California goosefoot	Chenopodium californicum	3 / 1	3
0.00	r			(sugar bush, Rhus ovata)
V0.00	r	24		wild-cucumber	Marah macrocarpus var. macrocarpus	10 / 9	44
N0.00	r	25		cobwebby thistle	Cirsium occidentale var. occidentale	2 / 2	10
0.00	r	26		*Russian thistle	Salsola tragus	20 / 4	25
0.00	r	27		chia	Salvia columbariae	40 / 5	21
V0.00	l	28		*rattail fescue	Vulpia myuros var. myuros	/	20
0.00	l	29		popcorn flower	Cryptantha intermedia	/	27
0.00	l	30		California plantain	Plantago erecta	50 / 4	13
v0.00	l	31		robust sun-cup	Camissonia robusta	/	1
0.00	b	32		coast-range melic	Melica imperfecta	30 / 9	43
N0.00	r	33	~	*roundleaf fluellin	Kickxia spuria	/	2
0.00	r			(California chicory, Rafinesquia californica)
0.00	r	34		saw-toothed goldenbush	Hazardia squarrosa var. grindelioides	20 / 9	35
V0.00	l	35		horseweed	Conyza canadensis	/	35
0.01				Cross small drainage.
0.01	l	36		slender tarweed	Hemizonia fasciculata	/	17
0.02	r			(chaparral beard-tongue, Keckiella antirrhinoides var. antirrhinoides)
0.02	l	37		chaparral yucca	Yucca whipplei	3 / 3	31
0.02	l	38		*sow thistle	Sonchus oleraceus	/	41
N0.02	b	39		Torrey's scrub oak	Quercus acutidens	20 / 5	26
0.02	r			(bush monkeyflower, Mimulus aurantiacus)
0.02	l	40	ssp	purple snapdragon	Antirrhinum nuttallianum ssp. nuttallianum	50 / 5	18
0.03	l	41		mission manzanita	Xylococcus bicolor	2 / 2	14
0.03	b	42		*narrowleaf filago	Filago gallica	/	45
N0.04	l	43		climbing bedstraw	Galium nuttallii ssp. nuttallii	20 / 9	30
N0.04	l	44		*petty spurge	Euphorbia peplus	3 / 1	10
0.04	l	45		purple head	Acourtia microcephala	3 / 2	19
0.04	l	46		golden yarrow	Eriophyllum confertiflorum var. confertiflorum	10 / 9	55
0.04	l	47		blue dicks	Dichelostemma capitatum ssp. capitatum	/	46
0.04	r	48		telegraph weed	Heterotheca grandiflora	10 / 9	35
0.04	r	49		Parish's purple nightshade	Solanum parishii	3 / 3	20
0.04	l	50		*California burclover	Medicago polymorpha	99 / 9	40
0.04	l	51		*soft chess	Bromus hordeaceus	/	40
0.04	r	52		*redstem filaree	Erodium cicutarium	10 / 1	55
0.04	b	53		silver puffs	Uropappus lindleyi	/	26
0.04	l	54		strigose lotus	Lotus strigosus	/	33
0.04	r	55		short-winged deerweed	Lotus scoparius var. brevialatus	10 / 9	22
V0.04	l	56		bush monkeyflower	Mimulus aurantiacus	20 / 9	42
0.04	l	57		California chicory	Rafinesquia californica	/	22
V0.04	r	58		slender wreathplant	Stephanomeria exigua ssp. deanei	10 / 4	13
0.04	r	59		*smooth cat's ear	Hypochaeris glabra	/	35
0.04	r	60		threadstem	Pterostegia drymarioides	/	30
0.04	l	61		*common groundsel	Senecio vulgaris	/	18
0.04	l	62	sp	miner's lettuce	Claytonia perfoliata ssp. mexicana?⁺	/
V0.04	l	63		*foxtail barley	Hordeum murinum ssp. leporinum	/	14
	r	64		leafy daisy	Erigeron foliosus var. foliosus	5 / 5	43
V0.06	l	65		canyon clarkia	Clarkia epilobioides	10 / 2	11
V0.06	r	66	ssp	yellow pincushion	Chaenactis glabriuscula var. glabriuscula	/	13
	l			Check for pellitory, Parietaria hespera var. hespera
N0.06	l	67		*prickly sow thistle	Sonchus asper ssp. asper	/	30
0.07	l	68		dwarf lupine	Lupinus bicolor	/	29
0.07	r	69		San Diego birdsfoot lotus	Lotus hamatus	/	24
0.07	r	70		chaparral beard-tongue	Keckiella antirrhinoides var. antirrhinoides	3 / 2	10
0.07	r	71		hollyleaf redberry	Rhamnus ilicifolia	20 / 9	43
0.07	r			Telephone pole
0.07	l	72		wide-throated yellow monkeyflower	Mimulus brevipes	5 / 1	12
0.08	l	73		wild canterbury bells	Phacelia minor	/	21
0.08	l			(white sage, Salvia apiana)
N	l	74		California buckwheat	Eriogonum fasciculatum var. foliolosum	10 / 5	51
	l			(California four o'clock, Mirabilis californica)
0.08	l	75		Coulter's lupine	Lupinus sparsiflorus	10 / 2	11
0.09	l	76		*slender wild oats	Avena barbata	/	39
0.09	l	77		meally white pincushion	Chaenactis artemisiifolia	/	14
0.10	l	78		narrowleaf bedstraw	Galium angustifolium ssp. angustifolium	1 / 1	48
0.11	r	79		annual sunflower	Helianthus annuus	1 / 1	12
V0.12	l	80		snapdragon campion	Silene antirrhina	3 / 1	7
0.12	l	81		*windmill pink	Silene gallica	/	33
V0.12	l	82		*Oriental mustard	Sisymbrium orientale	/	12
0.12	l	83		California poppy	Eschscholzia californica	/	29
N	r	84		sand cress	Calyptridium monandrum	/	11
0.12	b	85		San Diego morning-glory	Calystegia macrostegia ssp. tenuifolia	10 / 9	18
0.12	r	86		coast live oak	Quercus agrifolia var. agrifolia	20 / 9	42
0.12	l	87		white sage	Salvia apiana	20 / 9	38
0.13	l			(coffee fern, Pellaea andromedifolia)
N0.13	l	88		rattlesnake weed	Daucus pusillus	/	28
0.13	l	89	~	wild celery	Apiastrum angustifolium	/	14
N0.13	l	90		California chalk lettuce	Dudleya pulverulenta ssp. pulverulenta	3 / 2	10
N0.13	l	91		goldback fern	Pentagramma triangularis ssp. triangularis	10 / 3	24
V0.13	r	92		*Natal grass	Rhynchelytrum repens	1 / 1	3
0.15				Road curves left 45°.
0.15	r	93	~	California dodder	Cuscuta californica var. californica	1 / 1	17
V0.16		94		south coast morning-glory	Calystegia macrostegia ssp. intermedia	5 / 2	19
v0.16	l	95		narrow-leaved miner's lettuce	Claytonia parviflora ssp. parviflora⁺	/	19
V0.16	r	96		*smilo grass	Piptatherum miliaceum	20 / 5	19
N0.16	r	97		*common chickweed	Stellaria media	/	25
0.16	l	98		California four o'clock	Mirabilis californica	1 / 1	23
V0.17	l	99		white everlasting	Gnaphalium canescens ssp. microcephalum	5 / 5	36
N0.17	r	100		*Italian thistle	Carduus pycnocephalus	20 / 5	21
V0.18	r	101		fragrant everlasting	Gnaphalium canescens ssp. beneolens	/	23
0.18				Road curves right 45°.
0.18	l	102		stinging lupine	Lupinus hirsutissimus	1 / 1	15
0.18	l	103		angel's gilia	Gilia angelensis	5 / 1	14
0.19	r	104		branching phacelia	Phacelia ramosissima var. latifolia	10 / 9	34
0.20	b	105		white nightshade	Solanum douglasii	4 / 4	15
0.21	r	106		collar lupine	Lupinus truncatus	10 / 2	24
0.21	r	107	~	Emory's baccharis	Baccharis emoryi	2 / 2	8
0.21	r			Jct. path to Santa Margarita River.
V0.22	r	108		arrow-weed	Pluchea sericea	2 / 1	2
0.22	r	109		chaparral bush mallow	Malacothamnus fasciculatus	2 / 1	14
0.22	r	110		western ragweed	Ambrosia psilostachya	20 / 5	36
0.22	l			(arroyo willow, Salix lasiolepis)
0.22	l	111		wild grape	Vitis girdiana	50 / 9	7
0.22	l	112		mule fat	Baccharis salicifolia	2 / 1	40
V0.22	l	113		pit-seed goosefoot	Chenopodium berlandieri	5 / 1	7
0.22	r			(western sycamore, Platanus racemosa)
0.22	r			(mugwort, Artemisia douglasiana)
0.23	r	114		California blackberry	Rubus ursinus	20 / 4	13
0.23				Cross Stone Creek; elevation 460 feet.
0.23	l	115		heartleaf penstemon	Keckiella cordifolia	20 / 5	27
N0.23	l	116	sp	California brome	Bromus carinatus var. carinatus	2 / 1	24
0.23	r	117		*ripgut brome	Bromus diandrus	/	51
V0.23	r	118		*tree tobacco	Nicotiana glauca⁺	0 / 1	19
0.24	l	119		poison oak	Toxicodendron diversilobum	99 / 9	43
0.24	r	120		silky lotus	Lotus heermannii var. heermannii	5 / 3	6
0.24	l	121		*prickly lettuce	Lactuca serriola	1 / 1	42
0.24	l			Jct. road along Stone Creek; turn left and take it.
0.24	r	122		fiesta flower	Pholistoma auritum var. auritum	20 / 1	11
0.24	r	123		common bedstraw	Galium aparine	30 / 2	38
0.24	l	124		miner's lettuce	Claytonia perfoliata ssp. perfoliata	20 / 2	22
0.25				Pass through two gates.
0.25	r	125		coffee fern	Pellaea andromedifolia	20 / 5	22
0.26	r	126	sp	virgin's bower	Clematis pauciflora	30 / 4	12
N0.26	r	127		triangular-fruit sedge	Carex triquetra	/	17
0.26		128		sugar bush	Rhus ovata	20 / 9	25
V0.27	b	129		Fish's milkwort	Polygala cornuta var. fishiae	50 / 9	5
0.29	l	130		western sycamore	Platanus racemosa	10 / 9	27
0.29	r	131		mugwort	Artemisia douglasiana	10 / 2	28
0.29	r	132		giant wild-rye	Leymus condensatus	10 / 5	27
0.30	l	133		San Diego sedge	Carex spissa	30 / 9	5
V0.31	l	134	~	basket rush	Juncus textilis	5 / 1	5
0.32				Trail curves left.
0.32	l			(oleander, Nerium oleander)
0.35				Trail curves right 90°
0.37	l	135	?	unk rosette like mullein	?	1 / 1
0.38	r	136		California polypody	Polypodium californicum	20 / 3	16
V0.38	l	137		scarlet monkeyflower	Mimulus cardinalis	5 / 2	12
0.38				Trail turns left 30°
0.39	r	138		toyon	Heteromeles arbutifolia	1 / 1	44
0.39	r			Plastic pipe marker "O.W.5"
0.40	r			Jct. small drainage
0.41	l	139		basketbush	Rhus trilobata	/	24
0.41	l	140		California wild rose	Rosa californica	2 / 1	11
N0.41	l	141	ssp	sticky cinquefoil	Potentilla glandulosa ssp. glandulosa	1 / 1	17
0.41	l	142		goldenrod	Solidago californica	10 / 1	35
0.43	r			Woodrat's nest high in tree
0.49	r	143		San Diego pea	Lathyrus vestitus var. alefeldii	2 / 2	21
N0.51	r	144		Ramona lilac	Ceanothus tomentosus var. olivaceus	1 / 1	9
0.51				Trails climbs a slight rise.
0.53				Leave grid C8 for San Diego County Plant Atlas; enter grid C9.
0.54	r	145		San Diego mountain mahogany	Cercocarpus minutiflorus	1 / 1	12
0.54	r			Jct. very small drainage
0.56	l	146		*fennel	Foeniculum vulgare	2 / 2	13
0.56	l			Plastic pipe marker "O.W.4"
N0.58	r	147		California sweet-cicely	Osmorhiza brachypoda	30 / 2	6
0.59				Switchback right.
N0.59	r	148		Pacific sanicle	Sanicula crassicaulis	10 / 3	20
0.59	l	149		bracken	Pteridium aquilinum var. pubescens	5 / 1	9
0.59	l	150		red willow	Salix laevigata	1 / 1	21
0.64	r			Field of California sweet-cicely, Osmorhiza brachypoda.
0.69	l	151		*common plantain	Plantago major	5 / 1	6
0.69	l	152		water cress	Rorippa nasturtium-aquaticum	20 / 1	11
0.69				Cross Stone Creek; elevation ~555 feet.
0.69	l	153	~	umbrella sedge	Cyperus eragrostis	3 / 1	11
N0.70	r	154	~	*whorled dock	Rumex conglomeratus	5 / 1	9
V0.70	r	155		*umbrella plant	Cyperus involucratus	3 / 1	3
N0.71	r	156	ssp	Hooker's evening-primrose	Oenothera elata ssp. hirsutissima	1 / 1	10
0.73	l	157		caterpillar phacelia	Phacelia cicutaria var. hispida	5 / 1	16
N0.74	c	158		*Crete weed	Hedypnois cretica	20 / 1	19
0.75	l	159		Bigelow's spike-moss	Selaginella bigelovii	10 / 3	19
0.76	l	160		ladies fingers	Dudleya edulis	1 / 1	9
0.76	l	161		bird's-foot fern	Pellaea mucronata var. mucronata	1 / 1	30
V0.76	l	162		San Diego wreathplant	Stephanomeria diegensis	3 / 1	21
N0.79	c	163		*Australian brass-buttons	Cotula australis	20 / 1	17
0.80	l			Jct small drainage
0.83				Leave San Diego County; Enter Riverside County.
0.88				Guide ends at intersection with road to South Field Station; elevation 580 feet. Turn left, go uphill and through the orchard to return to the beginning.

				Species found on a previous trip, but without recorded locations:
		164		southern Indian pink	Silene laciniata ssp. major	/	20
N		165		*hedge mustard	Sisymbrium officinale	/	20
v		166	sp	slender-pod jewelflower	Caulanthus heterophyllus var. pseudosimulans	/	3
		167		checkerbloom	Sidalcea malviflora ssp. sparsifolia	/	25

Go to:

Field Guide to San Diego County: Santa Margarita Ecological Reserve
Plants of Southern California: Trail Guides

Copyright © 2002-2005 by Tom Chester.
Permission is freely granted to reproduce any or all of this page as long as credit is given to me at this source:
http://tchester.org/sd/plants/guides/smer/stone_creek_loop.html
Comments and feedback: Tom Chester
Last update: 22 August 2005.