Plant Guide to Green Route Trail, Crystal Cove 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!

Introduction and Explanation of Plant Trail Guides

Highlights of This Trail
Fieldwork Dates and Summary of List Changes With Time
The Plant Guide
Comments On Specific Species


This list is from only two trips, none of them in spring, and hence is quite incomplete for many species. The first trip was in a drought year, on 7/26/02, and the second was on 12/16/05.

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 91 trails in our database when this histogram was made; 3 of those trails, including this one, are at Crystal Cove State Park or the Laguna Wilderness Park. A number of "1" means the taxon has only been found only on this list, among all the trails in our database; numbers of "3" or smaller may indicate taxa found only in this area.

Number of Trails
Containing A Taxon
Number Of Taxa
On This Trail
% of Taxa
On This Trail
Total Taxa99100%

We found 12 additional species not in the above table, since they have not been fully identified yet. The unidentified ones are marked with ?, sp, or ssp in the id? column in the guide, and have no entries 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 DateVisit ## taxa# "?"# "sp"# "~"# "ssp"

The Plant Guide

Version for printing, without lines and other text on this page (6 pages)

Miles#id?Common NameLatin Name#here#all
0.00   Trailhead for "no dogs" route, 0.20 miles east of visitor center; elevation 180 feet (55 m)
0.00l1 lemonade berryRhus integrifolia50 / 5012
0.00r ssp(four-wing saltbush, Atriplex canescens ssp. canescens)
0.00r  (blue elderberry, Sambucus mexicana)
0.00l2 telegraph weedHeterotheca grandiflora30 / 3037
0.00b3 *shortpod mustardHirschfeldia incana99 / 9951
0.00 4 *Russian thistleSalsola tragus50 / 5025
0.00l5 *spotted spurgeChamaesyce maculata3 / 33
0.00   Open gate across road
0.00r6 *tocaloteCentaurea melitensis99 / 9945
0.00b7 coyote bushBaccharis pilularis50 / 5025
0.00l  Sign: "Authorized vehicles only"
0.00l8 *black mustardBrassica nigra99 / 995
0.01r  Kiosk with four panels: "Artichoke Thistle; Rodents and Raptors; Undercover Birds; Snakes of Scrubland
0.01r  Sign: "Rules of the Road ...."
0.01r  Signpost "1" at conglomerate rock boulder
0.01r9 stinking gourdCucurbita foetidissima10 / 109
0.01l10 coastal goldenbushIsocoma menziesii var. vernonioides50 / 505
0.01l  (California sagebrush, Artemisia californica)
0.01r  Sign: "No Name Ridge Trail. West Cut Across 1.3 miles; Park Boundary 2.2 miles; Deer Canyon Campground 3.0 miles"
0.01   Sign: "Rattlesnake Danger; Mountain Lion Danger" (gone 12/14/05)
0.01r11 *ripgut bromeBromus diandrus20 / 2052
0.01l12 cockleburXanthium strumarium30 / 3017
0.02l  (artichoke thistle, Cynara cardunculus)
0.08l13 *artichoke thistleCynara cardunculus40 / 404
0.09l14 California sagebrushArtemisia californica50 / 5047
0.09l15 *curly dockRumex crispus10 / 1023
0.10l16sspsouthern California morning-gloryCalystegia macrostegia5 / 5 
0.10 17 short-leaved cliff-asterMalacothrix saxatilis var. tenuifolia99 / 9912
0.11l18 California brickellbushBrickellia californica20 / 2028
0.11l19 California enceliaEncelia californica30 / 3012
0.11l20 California buckwheatEriogonum fasciculatum var. foliolosum50 / 5051
0.13l21 black sageSalvia mellifera40 / 4040
0.15l22spneedlegrassNassella sp40 / 40 
0.15r23?unk dead ann with a habit like Gutierrezia5050
0.15r24?unk dead ann like golden eardrops11
0.17l25 coast prickly-pearOpuntia littoralis5 / 57
0.17l26 *scarlet pimpernelAnagallis arvensis20 / 2034
0.17l27 San Diego wreathplantStephanomeria diegensis99 / 9924
0.17l28~*red bromeBromus madritensis ssp. rubens20 / 2054
0.18r29 wild-cucumberMarah macrocarpus var. macrocarpus1 / 145
0.18r30 blue elderberrySambucus mexicana15 / 1548
0.21r31 toyonHeteromeles arbutifolia / 44
0.22r32spnightshadeSolanum sp. /  
0.22r33 climbing milkweedSarcostemma cynanchoides ssp. hartwegii5 / 55
0.29   Cross drainage and curve right
0.29l  Signpost "2" at layered rock
0.31   Switchback left.
0.37l34 *soft chessBromus hordeaceus20 / 2040
0.44   Cross a very small drainage and curve right
0.44l35 chaparral bush mallowMalacothamnus fasciculatus40 / 4014
0.44   Signpost "3"
0.45l36 deerweedLotus scoparius var. scoparius30 / 3029
0.45l37 woolly Indian paintbrushCastilleja foliolosa2 / 25
0.47   Road curves left
0.47l38 narrowleaf bedstrawGalium angustifolium ssp. angustifolium20 / 2050
0.56l39 horseweedConyza canadensis50 / 5042
0.57l40spMariposa lilyCalochortus sp.3 / 3 
0.57l41 lanceleaf dudleyaDudleya lanceolata10 / 1021
0.61   Road curves left
0.61 42 bush monkeyflowerMimulus aurantiacus30 / 3042
0.61l43 California everlastingGnaphalium californicum10 / 1043
0.62l44 bicolored everlastingGnaphalium bicolor2 / 231
0.63l45spbaby annual clover2020
0.65r46~*Italian rye-grassLolium multiflorum10 / 1019
0.66l47 *common cudweedGnaphalium luteo-album10 / 1018
0.66l48 *little horseweedConyza bonariensis2 / 219
0.66l49 dove weedEremocarpus setigerus10 / 1026
0.66l50 mule fatBaccharis salicifolia5 / 539
0.66l51~California-asterLessingia filaginifolia var. filaginifolia+ / 52
0.69r  Y-jct. with shortcut road to Poles Road; stay left
0.70l52sspGreat Valley gumweedGrindelia camporum10 / 10 
0.70l53~goldenstarBloomeria crocea10 / 1013
0.72r54~sacred daturaDatura wrightii+10 / 1018
0.73l55 *prickly sow thistleSonchus asper ssp. asper5 / 531
0.74l56 *prickly lettuceLactuca serriola5 / 542
0.76r  white nightshadeSolanum douglasii50 / 5016
0.76r  Jct. Poles Road; go right on it
0.78l57 *horehoundMarrubium vulgare10 / 1033
0.78r  (fragrant everlasting, Gnaphalium canescens ssp. beneolens)
0.80l  Jct. Road; stay right; highest elevation on route, 545 feet (165 m)
0.80 58 western vervainVerbena lasiostachys var. scabrida / 3
0.82r  Jct. shortcut road, the other end of road at mile 0.69
0.84r59 laurel sumacMalosma laurina2 / 242
0.86r  Jct. use trail
0.90l60 *tree tobaccoNicotiana glauca3 / 319
1.15l ~(~nettle-leaved goosefoot, ~Chenopodium murale)
1.15b  Jct. El Moro Canyon Road / Trail; go right on it. You are now near the creek, but will diverge from it for a distance
1.15l  (poison hemlock, Conium maculatum)
1.19l61 *sow thistleSonchus oleraceus10 / 1042
1.19l62 *poison hemlockConium maculatum99 / 995
1.21l63~*nettle-leaved goosefootChenopodium murale20 / 204
1.21l64 seaside heliotropeHeliotropium curassavicum20 / 2010
1.21l65 *bristly ox-tonguePicris echioides2 / 212
1.22l  Jct. Road; continue forward
1.22r66 *milk thistleSilybum marianum20 / 2010
1.23 67~*foxtail barleyHordeum murinum ssp. leporinum / 14
1.24l68 California wild roseRosa californica20 / 2011
1.32l69 western ragweedAmbrosia psilostachya / 39
1.35b70 giant wild-ryeLeymus condensatus10 / 1027
1.37   Minor local high point on road; road curves left
1.40r  (branching phacelia, Phacelia ramosissima)
1.42l71sspbranching phaceliaPhacelia ramosissima99 / 99 
1.42 72 virgin's bowerClematis ligusticifolia40 / 409
1.42r73 arroyo willowSalix lasiolepis5 / 536
1.43r74?bull or Italian thistle?
1.43r75?baby stinging nettle or bee plant
1.43 76 Cross side drainage. You are now near the creek again.
1.43l77 poison oakToxicodendron diversilobum3 / 343
1.44r78 climbing bedstrawGalium nuttallii ssp. nuttallii2 / 231
1.44r79 mugwortArtemisia douglasiana10 / 1028
1.44r80 saltgrassDistichlis spicata50 / 5016
1.44 81sspCalifornia bee plantScrophularia californica /  
1.45l82 fuchsia-flowered gooseberryRibes speciosum5 / 57
1.46r83 *nit grassGastridium ventricosum10 / 1027
1.50b84 *common plantainPlantago major10 / 109
1.50b85 prairie rushScirpus maritimus10 / 101
1.50   Cross El Moro Creek for the first time
1.51b86~*celeryApium graveolens10 / 104
1.51r87 *coast goosefootChenopodium macrospermum var. halophilum3 / 31
1.51r88 *rabbits-foot grassPolypogon monspeliensis10 / 1026
1.51r89 sneezeweedHelenium puberulum5 / 51
1.52r90 black willowSalix gooddingii1 / 16
1.55r spSmall pond, probably dug out of creek for water for cattle, with these species: salt marsh fleabane, Pluchea odorata; annual tule, Scirpus cernuus; and Typha sp., possibly the T. latifolia on the CCSP Plant List
1.61l91 stinging nettleUrtica dioica ssp. holosericea1 / 19
1.62   Small patch of California wild rose
1.66r92~California goosefootChenopodium californicum1 / 14
1.67r93~cotton-batting plantGnaphalium stramineum1 / 120
1.67r  *Italian thistleCarduus pycnocephalus+10 / 1021
1.81l94 bladderpodIsomeris arborea3 / 38
1.91r95 *Mexican teaChenopodium ambrosioides5 / 55
1.91r96~*white-stemmed filareeErodium moschatum5 / 521
2.02r97 *purple wild radishRaphanus sativus5 / 511
2.02r  (castor bean, Ricinus communis)
    Cross side drainage?
2.12l98 *castor beanRicinus communis2 / 215
2.12   Large patch of California wild rose
2.14 99 wild tarragonArtemisia dracunculus / 21
2.16 100 *nasturtiumTropaeolum majus / 4
2.16 101 creeping snowberrySymphoricarpos mollis / 7
2.16r102 *Kaffir PlumHarpephyllum caffrum1 / 11
2.18l  Jct. road to "B.F.I."
2.19 103 *coastal wattleAcacia cyclops1 / 11
2.21   Cross streambed; low point on route, elevation ~35 feet (10 m); road curves right 90°
2.21 104 *giant reedArundo donax+ / 8
2.21r105 *bermuda grassCynodon dactylon10 / 1033
2.21l106spcattailTypha sp. (T. latifolia?)3 / 3 
2.21r ~(water cress, Rorippa nasturtium-aquaticum)
2.23l  Begin mobile home park; plant guide now lists only plants on right
2.23 107 red willowSalix laevigata1 / 123
2.30r108 long-stemmed buckwheatEriogonum elongatum var. elongatum1 / 129
2.31r109 white everlastingGnaphalium canescens ssp. microcephalum10 / 1037
2.36   End this portion of the mobile home park
2.36r110 *sourcloverMelilotus indicus1 / 125
2.37r  Signpost "14" at shale exposure
2.39r  Jct. road.
2.45l  Begin another portion of the mobile home park
2.63   Gate across end of El Moro Canyon Road / Trail; go right to parking lot
2.68l111 western sycamorePlatanus racemosa1 / 128
2.69   Parking Lot at Visitor Center

Comments On Specific Species

Lessingia filaginifolia var. filaginifolia. The first specimen on the trail did not have blooms, so the identification is tentative. A later specimen had blooms and confirmed this identification.

Datura wrightii. The first specimen on the trail did not have blooms, so the identification is tentative. A later specimen had blooms and confirmed this identification.

Carduus pycnocephalus. This specimen is not numbered since the earlier baby thistle may also be this species.

Arundo donax. We were very pleased to see that this species was eliminated in December 2005 from this location.

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Copyright © 2002-2005 by Tom Chester and Kay Madore.
Permission is freely granted to reproduce any or all of this page as long as credit is given to us at this source:
Comments and feedback: Tom Chester | Kay Madore
Updated 18 December 2005.