Plant Species of the Borrego Desert: 2009-2010 Blooms

California fish-hook cactus, Mammillaria dioica
desert apricot, Prunus fremontii

Both pictures taken on 24 January 2010 in Hellhole Canyon (one canyon south of Borrego Palm Canyon immediately west of Borrego Springs) by Mike Crouse.

Table of Contents

Rainfall This Season

Annual Germination, Growth and Blooms
     General Requirements for Annual Germination
     Peak Bloom: What Does That Mean?
     Summary of Annual Germination, Growth and Blooms in 2009-2010

     Detailed Germination, Growth and Bloom Reports From Each Hike
     Pictures From Each Hike

How Long Will An Annual Bloom Last
     General Factors
     Predictions for This Year

Species in Bloom On Each Trip
     Number of Species and Plants in Bloom On Each Trip
     List of Species in Bloom On Each Trip, With Photographs
     Pictorial Gallery of Species in Bloom To Date in 2009-2010, organized by flower color

Links to Other Webpages on Anza-Borrego Desert State Park Blooms


The Borrego Desert is the northern part of Anza-Borrego Desert State Park below an elevation of ~3000 feet, named for the Borrego Valley and the town of Borrego Springs (map and expanded definition).

This page gives information about the 2009-2010 bloom for all species in this area, with emphasis on the annuals that are responsible for the widespread showy blooms that appear in some years on the desert floor. The date of the last update to this page is given at the bottom of this page.

For the progress of last year's bloom, see 2008-2009 Blooms.

In addition to specific information about current conditions, this page also gives some general information on what is needed to germinate those annuals, and what is needed to sustain the annual bloom.

The information here is by no means a definitive list to what is blooming at all locations in the Borrego Desert; it only records the species I've seen in bloom on my trips that occur roughly every fourth day. Because the locations change, the numbers of species in bloom, and the number of plants in bloom, cannot usually be directly compared from trip to trip. However, the information here will give the reader an idea of what the bloom is doing in the Borrego Desert.

Note that there is often quite a difference in the annual bloom between the moister canyons west of Borrego Springs and the drier areas around the Badlands. Similarly, even within those canyons on the west, there can be large differences between the north-facing and south-facing slopes, and between canyons with permanent water, like Borrego Palm Canyon, and drier canyons. In the drier areas to the east, there can be large differences between the edges of washes and the middle of washes, and between shady canyons and open areas.

The locations for each hike are in the detailed reports below; more information is sometimes given in Botanical Trail Reports in Chronological Order, which usually includes more information about the bloom on each trip.

Rainfall This Season

Rainfall is the most important determinant of blooms. Rainfall is usually highest on the mountain slopes, especially on the west edge of the Borrego Desert, and falls off dramatically with lower elevation to the east. This occurs whenever our rainfall is mostly orographic. However, when rainfall is from convection, the deserts can at times get more rainfall than the coast. (See Precipitation types.)

In addition to desert stations, I've also given the rainfall from my house in Fallbrook, on the coastal side at 680 feet elevation, to show the large difference in rainfall between the wet side of the mountains and the dry side.

Table 1 gives the storm totals, in inches, as of the last day of each storm. The storm totals were taken from the Weather Service Rainfall Storm Summary, except for Fallbrook and the Borrego Badlands / Ocotillo Wells. Occasionally other stations are missing in that report; if so, totals are taken from the Rainfall Summary Map. Rainfall reports for Ocotillo Wells are reported at here for the month to date.

If a station didn't appear in the summary, or I couldn't find it elsewhere on line, I usually assumed the rainfall total was zero. Although this assumption is probably usually correct, it is not necessarily always valid since missing data plague all rain reports. In a few cases, when it was clear that some rainfall must have been received at those missing stations, I've guesstimated the rainfall.

Note that the total rainfall at the bottom of the table is since 1 October, since rain that falls earlier doesn't germinate the desert annuals (see below). This rainfall total may be different from the rainfall reported by the Anza-Borrego Desert State Park Visitor Center using the normal California rainfall year that begins on 1 July.

Table 1. Rainfall Events Since 1 October 2009

DateFallbrookSan FelipeAgua CalienteBorrego Palm CanyonBorrego SpringsBorrego Badlands /
Ocotillo Wells
13 October 20090.
28 November 20090.420.
7 December 20091.931.411.09~1.01.24~1.2
11-13 December 20091.460.5??0.3??0.130.18~0.00
22 December 20090.130.2?0.2?~0.080.08~0.00
18-22 January 20105.24~6.0?~6.0?~5.5?4.891.65
Total Since 1 October9.49~8.3?~7.7?~6.8?6.42~2.85

The reported rainfall of 0.34 inches for Borrego Palm Canyon on 12/7/09 is unlikely to be correct, since nearly everywhere in San Diego County received an inch of rain or more. Automatic rainfall gauges often get clogged, causing under-reported rainfall, which is probably what happened here. I've replaced it by an estimated 1.0 inches.

The rainfall given at the Visitor Center since July 1, 2009 matched closely the Borrego Springs total rainfall given above as of 12/31/09 since there was no monsoonal rain at the Visitor Center in 2009.

Annual Germination, Growth and Blooms

General Requirements for Annual Germination

The timing of rainfall is extremely important for the annual bloom. Rainfall received in the summer and early fall will not germinate the annuals that bloom in February and March. Rainfall received after January will either not germinate those annuals, or will germinate them too late for them to produce a robust bloom in most years. Thus rain must fall in October, November, and/or December in order to germinate the annuals that produce the showy mass displays.

The amount in a single storm is also important. Native annuals require about an inch of rainfall, received over no longer than a period of something like several days, in order to germinate. Our native annuals have learned the hard way that any less rainfall doesn't guarantee enough moisture in the soil for them to produce seeds.

Unfortunately, non-native annuals can germinate on less rainfall, and can sometimes get a head start over our native annuals if we get a first rainfall much less than an inch.

See Predicting Desert Wildflower Blooms - The science behind the spectacle from the Arizona-Sonora Desert Museum for information relating to Arizona desert blooms.

Peak Bloom: What Does That Mean?

The term Peak Bloom means different things to different people:

Most of the time, I use the latter definition of Peak Bloom, but I also try to mention when the carpets of flowers are present.

If you are looking for a particular species in bloom, the time of Peak Bloom doesn't matter to you; you want to know only when that species is in bloom. Plant species bloom at different times; it is not possible to see every species in bloom even over the time period of a month.

For example, if you want to see the beautiful blooms of beavertail cactus, Opuntia basilaris, you'll need to come just after the showy annual carpets are finished. If you want to see the beautiful flowers of desert-willow, Chilopsis linearis ssp. arcuata, then you'll need to come here in summer, when few species are blooming except for it.

See observed dates of peak bloom in 2008-2009 for various locations.

These annual species produce the showy carpets of flowers:

Other annuals can produce carpets of flowers, but are either more limited in their distribution, such as Bigelow's monkeyflower, Mimulus bigelovii, or purple mat, Nama demissum; or don't produce such showy displays, such as Fremont pincushion, Chaenactis fremontii (since fields of white don't show up well against the whitish background of the desert soil).

Summary of Annual Germination, Growth and Blooms in 2009-2010

The widespread inch of rain on 12/7/09 produced excellent native annual germination west of Borrego Springs, but as of mid-January 2010 poor native annual germination east of Borrego Springs. East of Borrego Springs, including the floor of eastern Clark Valley and Beckman Wash in the Borrego Badlands, almost 100% of the germinated annuals are the non-native Asian mustard, Brassica tournefortii.

The widespread 1.5-5 inches of rain on 18-22 January 2010 essentially guarantees a good wildflower display west of Borrego Springs unless we get several weeks of temperatures over 90° F. It remains to be seen whether this rainfall arrived early enough to produce good annual germination east of Borrego Springs. Even if native annuals were germinated from this rain, in many places they might be overwhelmed by the non-native Asian mustard due to its huge head start.

We are in the take-off phase for the bloom, the time of year when the number of plants in blooms begins to double every week or two. See the plots below for how the bloom unfolded last year.

Detailed Germination, Growth and Bloom Reports From Each Hike

Detailed reports since 1 December 2009 are given here; for earlier reports, see Reports from 29 October 2009 to 24 January 2010.

These reports are just summaries of these conditions from each hike.

See also Detailed Germination, Growth and Bloom Reports From Each Hike in 2008-2009.

12/1/09: Split Mountain Road south of Ocotillo Wells, Elephant Tree Area. The Split Mountain Road area south of Ocotillo Wells is simply amazing; it is green and full of flowers! The creosote bushes are dense with beautiful dark green foliage, and there are still carpets of chinch-weed, Pectis papposa, as far as the eye can see in places, all from a single thunderstorm on 9/5/09. Although most of the Pectis has finished blooming, there are still many plants that look beautiful, in full bloom.

Farther south, in the alluvial fan below Alma Canyon in the Elephant Tree area, we found a total of 59 species along our route, and an amazing 36 of them, 61%, had at least one plant in bloom, and typically many more. See the list in the table below. Some of the species that were not in bloom had fruit, like the elephant trees and Acacia greggii.

Altogether on this trip, we saw over 1,072 plants of 38 species in bloom. Not bad for early December!

12/5/09: Collins Valley, Cougar Canyon. The fabulous bloom of black-banded rabbitbrush, Chrysothamnus paniculatus, at the mouth of Indian Canyon has begun to fade, although there are still a number of plants in full bloom. Cougar Canyon has good displays of California fuchsia, Epilobium canum.

12/9/09: Split Mountain Road south of Ocotillo Wells, Elephant Tree Area, Alma Canyon. The bloom in this area continues to be perhaps the best in the Park, and the recent rainfall should rejuvenate the bloom for some species in the future. We saw over 675 plants of 36 species in bloom, including six species not seen on any previous trip so far this year.

12/15/09: Elephant Tree Area, Alma Canyon. The good bloom here continues, with some species rejuvenated by the recent rain. For example, the Allionia blooms are much better now than they were six days ago.

Amazingly, one perennial plant, Lyrocarpa coulteri var. palmeri, Coulter's lyrepod, is already producing blooms on a plant just a few inches high just eight days after the rain. This plant must have already emerged and grew to its present size prior to the rain, since when we saw the plant on 12/27/09, 20 days after the rain, it looked virtually the same.

We saw over 660 plants of 29 species in bloom.

12/19/09: Clark Valley. We saw only 34 plants of 7 species in bloom today, which is more typical of most places in the Borrego Desert than the places we have been visiting so far this season. It is too early for blooms in most places that don't have a permanent source of water, or received summer rainfall.

We saw a zillion baby annuals that have sprouted, but unfortunately they are all silver dollar size clumps of the non-native Asian mustard, Brassica tournefortii. It is hard to imagine that just 15 years ago this invasive species was not even present here.

12/23/09: Agua Caliente County Park. This area is not in the Borrego Desert, but its report is included here anyway. The star of the show for me was seeing a single open bloom of Lycium parishii, Parish's desert-thorn, which is found only south of the Borrego Desert. This was the first time I had seen this species in bloom. We saw 18 species total in bloom. (Since this area is not in the Borrego Desert, the numbers from this trip are not included in the plots and tables below, or in the list of species in bloom.)

12/27/09: Elephant Tree Area, Alma Canyon, Starfish Cove. The bloom was almost identical to what was seen on 12/15/09, but we noticed fewer plants of each species in bloom, since this was mostly a hiking trip so we could finally get to Starfish Cove.

12/31/09: California Riding and Hiking Trail, Lower Hellhole Canyon part. It seemed like we had gone back in time by coming to this area after the Elephant Tree Area. Annuals were just germinating, with many showing just their cotyledons or first true leaves. Some of the shrubs were just leafing out.

1/3/10: California Riding and Hiking Trail, Culp Valley and upper Hellhole Canyon part. This trip was at 2600 feet elevation and above, and very few plants were in bloom. Interestingly, some of the annuals were a bit more advanced than seen lower on this trail four days ago, instead of being a bit farther behind.

1/7/10: Hellhole Canyon to Maidenhair Falls. There is excellent annual germination in Hellhole Canyon itself, and decent germination underneath the shrubs on the alluvial plain below. In particular, the Phacelia distans plants are growing robustly, with ~8 good-sized leaves or so on each plant. About ten plants of bladderpod, Isomeris arborea, are in good bloom.

1/10/10: Borrego Badlands: Fonts Point Wash and Beckman Wash. It was almost shocking to see the lack of native annual germination in this area. To a first approximation, the only annuals that have germinated here are those of the non-native Asian mustard, Brassica tournefortii. We only observed a few baby plants of narrow-leaved cryptantha, Cryptantha angustifolia, and a few other native annuals. Worse, even if native annuals germinate later, they will be overwhelmed by the non-native Asian mustard due to its huge head start.

We observed rosettes of 3-4 leaves on several desert lilies, Hesperocallis undulata, but the last leaf reverted to a much-smaller size, indicating that it might be running of our moisture. That doesn't augur well for its good bloom unless we get further rain.

As is often the case, the number of plants in bloom in the Borrego Badlands was way less here than we observed any place else so far this year. We found a grand total of 4 plants in bloom, each a different species.

We also found a single plant on the S22 roadside of Salton milk-vetch, Astragalus crotalariae, with a number of buds.

1/15/10: Hellhole Canyon to beyond Maidenhair Falls. Conditions are much the same as on 1/7/10, with the annuals all a bit bigger.

1/24/10: Hellhole Canyon to beyond Maidenhair Falls. It rained! It rained a lot! This hike was delayed by six days due to a glorious five days of rain.

Hellhole Canyon Creek is flowing quite strongly above the Canyon mouth; water is shooting down Maidenhair Falls; the ground is wet everywhere; and the annuals are looking great. The annuals are no longer little rosettes with a few leaves in many places; they are now forming masses with foliage some distance above the ground.

The widespread ~5 inches of rain here on 18-22 January guarantees a good wildflower display to come at least in this canyon.

The stars of the show today were a few specimens of California fish-hook cactus, Mammillaria dioica, in full bloom along the portion of the trail in the alluvial fan, and the first few plants of desert apricot, Prunus fremontii in bloom (both pix by Mike Crouse).

We observed three tiny plants of the first winter annual in bloom, but unfortunately the species was the non-native redstem filaree, Erodium cicutarium.

1/28/10: Borrego Palm Canyon: Palm Grove Loop. The biggest delight of the day was to quite unexpectedly see the rock crossosoma, Crossosoma bigelovii, in beautiful fragrant bloom. The scent was very strong and delightful, and the plants were beautiful, covered with bloom.

The first mats of annual flowers were present, but they were mats that only a serious botanist would notice. They were from the first flowers of curvenut combseed, Pectocarya recurvata, which has a minute flower, just ~1 mm (1/25 inch) across. The other first-flowering mass annual here, hairy-podded pepper-grass, Lepidium lasiocarpum, was already showing its first fruit, along with what passes for flowers in this self-fertilized species.

We spent considerable time verifying all the species on the plant trail guide, to see how many of the species seen in the glorious year of 2005 were present this year. The variation is almost entirely due to annual species, since the perennials and shrubs stick around for a very long time.

Nearly all annual species are present (of course, these were all babies, with few in flower yet). For example, in the first 0.02 mile of the trail, we found 18 annual species present, most in great abundance, with only three winter annual species seen in prior years not in evidence in this short stretch of trail (Lotus strigosus, Perityle emoryi, Camissonia claviformis). The latter two species were found later on the trail. Most surprisingly, one of those 18 annual species, the native Texas filaree, Erodium texanum, had not been seen previously anywhere on this trail in 2003-2005!

It is going to be a good bloom year in the canyons west of Borrego Springs.

Pictures From Each Hike

Most of the pictures in the Pictorial Gallery of Species in Bloom To Date in 2009-2010, organized by flower color, have been taken this year. The date and location of each picture are given in that table.

Most of the rest of my pictures were taken for scientific purposes, and not specifically to show anything about the bloom. However, they may be of interest to people showing some aspects of what the bloom was like on a given date. My pictures are not even on standard webpages; Table 2 gives links to a directory and you have to click on the link for each picture to see it. Scientific names are used almost exclusively for the picture names.

The context for most of these pictures is sometimes given in the botanical reports from each hike.

Table 2. Links to Directories With Pictures From Each Trip

October 29
November 15
November 19
November 22
November 25
December 1
December 5
December 9
December 15
December 19
December 23
December 27
December 31
January 3
January 7
January 10
January 24
January 28

See also Pictures From Each Hike in 2008-2009.

How Long Will An Annual Bloom Last

General Factors

Past Rainfall, Future Rainfall, and Heat are the main factors determining how long an annual bloom will last on the desert floor at about 1000 feet elevation:

Predictions for This Year

No predictions can be made, since most of the annuals are still germinating and/or growing.

Species in Bloom On Each Trip

Number of Species and Plants in Bloom On Each Trip

Five plots are given below; each plot has this year's bloom data as well as last year's bloom data for comparison:

The plots and the table here must be interpreted cautiously, for at least three reasons:

Figure 1. Number of Species in Bloom on Each Trip

Figure 2. Number of Plants in Bloom on Each Trip

Figure 3. Cumulative Number of Species Seen in Bloom From All Trips

Figure 4. Cumulative Number of Annual Species Seen in Bloom From All Trips

Figure 5. Percent of All Species Seen in Bloom From All Trips That Are Annuals

Table 3 gives the numbers used for the above plots, for the last two months. For earlier numbers, see Numbers from 29 October 2009 to 24 January 2010. The individual observations used to obtain these numbers are in the List of Species in Bloom On Each Trip.

Table 3. Number of Species and Total Number of Plants in Bloom on Each Trip

Number of12/112/512/912/1512/1912/2712/311/31/71/101/151/241/28

List of Species in Bloom On Each Trip, With Photographs

Table 4 gives the number of plants observed to be in bloom for each species on each hike, with a maximum value of 99 plants for each species. This maximum value prevents one species from dominating the total plants in bloom, and makes it much easier on me to keep track of the bloom.

Because the hike locations vary, some species will not be present on every hike, so the lack of an entry for a given hike says nothing about whether that species is blooming elsewhere.

The Checklist is sorted first by category, with dicots before monocots, and then by family and scientific name. The Family and Scientific Name are from the Jepson Manual. An asterisk before the Common Name indicates a non-native taxon.

See Plant Family Abbreviations to obtain the full family name from the abbreviations used in the table below.

This table gives the number of plants in bloom only since 1 December 2009. Some species thus have no number of plants in bloom listed in this table since they were observed in bloom only on trips prior to that date. For those earlier trips, see list of species seen in bloom from 29 October 2009 to 24 January 2010..

The Checklist has thumbnail photographs for most of the species, all of which were taken in the Borrego Desert. Clicking on the thumbnail photograph gives a larger version equal in size to the ones at the top of this page.

All the larger versions are also presented in Pictorial Gallery of Species in Bloom To Date in 2009-2010, organized by flower color.

All pictures were taken by myself except the following:

This table gives the number of plants in bloom only since 1 December 2009. Some species thus have no number of plants in bloom listed in this table since they were observed in bloom only on trips prior to that date. For those earlier trips, see list of species seen in bloom from 29 October 2009 to 24 January 2010.

Some species that have bloomed in the Borrego Desert are not listed here, since I never observed them in bloom. Such species are found only in a few locations, and I either never visited those locations or they bloomed in between my visits to their location.

Of course, species that bloom later in the year, and species that do not have flowers (ferns, etc.) are not present in this list, so it is not the equivalent of a plant checklist for the Borrego Desert.

Table 4. List of Species in Bloom On Each Trip

#FAMScientific NamePixCommon Name12/112/512/912/1512/1912/2712/311/31/71/101/151/241/28
1ACAJusticia californicachuparosa30505099 2030 50 999999
2AMAAmaranthus fimbriatusfringed amaranth10 11         
3ASCAsclepias subulatarush milkweed             
4ASCSarcostemma cynanchoides ssp. hartwegiiclimbing milkweed             
5ASTAdenophyllum porophylloidesSan Felipe dogweed1  1      1 1
6ASTAmbrosia dumosaburroweed1            
7ASTAmbrosia psilostachyawestern ragweed             
8ASTBaccharis salicifoliamule fat 5      2   2
9ASTBebbia juncea var. asperasweetbush9929999550215 5215
10ASTBrickellia desertorumdesert brickellia             
11ASTChrysothamnus paniculatuspunctate rabbitbrush19955         
12ASTConyza canadensishorseweed             
13ASTDicoria canescensdesert dicoria             
14ASTEncelia farinosabrittlebush5 510 2      1
15ASTEricameria brachylepisboundary goldenbush 1    21    1
16ASTGutierrezia sarothraematchweed 1051         
17ASTIsocoma acradenia var. eremophilasolitary-leaved alkali goldenbush             
18ASTLepidospartum squamatumscale-broom             
19ASTPalafoxia arida var. aridadesert needle99155     1   
20ASTPectis papposa var. papposachinch-weed99 10          
21ASTPerityle emoryiEmory's rock-daisy111  1       
22ASTSenecio flaccidus var. monoensisMono ragwort             
23ASTSolidago californicagoldenrod           1 
24ASTStephanomeria exigua ssp. exiguaslender wreathplant             
25ASTStephanomeria pauciflora var. pauciflorawire-lettuce50140151102 3    
26ASTViguiera parishiiParish's viguiera       1     
27BORCryptantha angustifolianarrow-leaved cryptantha1            
28BORCryptantha racemosabushy cryptantha 5203 1       
29BORHeliotropium curassavicumseaside heliotrope             
30BORPectocarya recurvatacurvenut combseed            99
31BORTiquilia palmeriPalmer's coldenia1            
32BORTiquilia plicataplicate coldenia             
33BRABrassica tournefortii*Asian mustard  1          
34BRALepidium lasiocarpum var. lasiocarpumhairy-podded pepper-grass            20
35BRALyrocarpa coulteri var. palmeriCoulter's lyrepod  13 1      5
36CACMammillaria dioicaCalifornia fish-hook cactus        1  3 
37CAPIsomeris arboreabladderpod        10 1010 
38CHEChenopodium murale*nettle-leaved goosefoot  2          
39CROCrossosoma bigeloviirock crossosoma            4
40EUPChamaesyce micromeraSonoran spurge5 110         
41EUPChamaesyce polycarpasmall-seeded spurge99105020 1020     1
42EUPChamaesyce setilobaYuma spurge99 9999 10       
43EUPCroton californicusCalifornia croton115       1   
44EUPDitaxis lanceolatanarrowleaf ditaxis99 5020 5      1
45EUPDitaxis neomexicanaNew Mexico ditaxis      1      
46EUPEuphorbia erianthabeetle spurge1 31         
47FABAcacia greggiicatclaw   1         
48FABLotus rigidusdesert lotus  11   1     
49FABProsopis glandulosa var. torreyanahoney mesquite            1
50FABPsorothamnus emoryiEmory's indigo-bush 15  2    1   
51FABPsorothamnus schottiiindigo bush10 101011  1 11 
52FOUFouquieria splendens ssp. splendensocotillo79959920205 15120205
53GERErodium cicutarium*redstem filaree           31
54GRORibes indecorumwhite-flowering currant           1 
55KRAKrameria grayiwhite rhatany10 10          
56LAMHyptis emoryidesert-lavender99 99993992 5 10599
57LOAPetalonyx thurberi ssp. thurberiThurber's sandpaper-plant             
58MALHibiscus denudatusrock hibiscus1            
59MALHorsfordia newberryiNewberry's velvet mallow3            
60MALMalacothamnus aboriginumIndian Valley bush mallow        5 11 
61NYCAbronia villosa var. villosahairy sand-verbena1 2          
62NYCAllionia incarnatatrailing four o'clock99 2030 20       
63NYCBoerhavia intermediafivewing spiderling10            
64NYCBoerhavia wrightiiWright's spiderling30            
65NYCMirabilis bigelovii var. retrorsawishbone plant1 12 1       
66NYCMirabilis tenuilobaslender-lobed four o'clock            1
67ONACamissonia cardiophylla ssp. cardiophyllaheartleaf sun-cup 55  1       
68ONAEpilobium canum ssp. latifoliummountain California-fuchsia 10           
69ONAEpilobium ciliatum ssp. ciliatumwillowherb             
70ONAOenothera elata ssp. hirsutissimaHooker's evening-primrose             
71PLAPlatanus racemosawestern sycamore             
72POLEriogonum elongatum var. elongatumlong-stemmed buckwheat 99           
73POLEriogonum fasciculatum var. polifoliumCalifornia buckwheat2    1       
74POLEriogonum inflatumdesert trumpet2011010231 3   2
75POLEriogonum wrightii var. nodosumWright's buckwheat 30   22   111
76ROSPrunus fremontiidesert apricot           3 
77SALSalix exiguanarrowleaf willow            1
78SCRMimulus cardinalisscarlet monkeyflower             
79SOLDatura discolordesert thornapple50 50  1       
80SOLDatura wrightiisacred datura             
81SOLLycium andersoniiAnderson's desert-thorn            4
82SOLNicotiana obtusifoliadesert tobacco  11 1       
83SOLPhysalis crassifoliathick-leaved ground cherry3 410 6       
84SOLSolanum douglasiiwhite nightshade             
85VISPhoradendron californicumdesert mistletoe       2    2
86ZYGFagonia pachyacanthasticky fagonia3 2          
87ZYGLarrea tridentatacreosote bush5 1          
88LILAgave desertidesert agave     1    11 
89POAAristida adscensionissix-weeks three-awn5 53 1       
90POABouteloua aristidoides var. aristidoidesneedle grama10  1 1       
91POABouteloua barbata var. barbatasix-weeks grama  11         
92POAPennisetum setaceum*fountain grass            10
93POAPleuraphis rigidabig galleta2            

Links to Other Webpages, etc. on Anza-Borrego Desert State Park Blooms

DesertUSA Anza-Borrego Desert State Park Wildflower Reports For 2010

Anza-Borrego Desert Wildflowers: Where and When to Look from the Anza-Borrego Desert Natural History Association

Anza-Borrego Desert State Park Wildflower Hotline: (760)767-4684. "Information on this recording is updated regularly."

Anza-Borrego Foundation and Institute Wildflowers (link didn't work on 9 February 2009)

Theodore Payne Wildflower Hotline (Reports begin in March 2010)

Carol Leigh's California Wildflower Hotsheet

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Copyright © 2008-2010 by Tom Chester.
Commercial rights reserved. Permission is granted to reproduce any or all of this page for individual or non-profit institutional internal use as long as credit is given to me at this source:
Comments and feedback: Tom Chester
Updated 29 January 2010.