Flora of Idyllwild Park, San Jacinto Mountains

Fig. 1. Lilly Creek in Idyllwild Park, looking downstream just below beginning of steep portion (see text below). This location is just southwest of the Nature Center. Click on the picture for a larger version.

Fieldwork Dates
Floral Regions
Species Checklist
Notes on Some Species

Fig. 2. The flora of Idyllwild Park contains flowers large and small. Note the fingers for scale in the upper pictures, and the pine needles, branches and one incense-cedar twig for scale in the linked version of the lower picture. Click on the pictures for larger versions.
  • Upper left: the almost-unnoticeable teeny-tiny 3 mm (0.1 inch) flower of the "large-flower form" (!) of threadplant, Nemacladus sigmoideus.
  • Upper right: the large showy flower of lemon lily, Lilium parryi, ~12 cm (5 inches) across, the probable namesake of Lilly Creek. (Picture from Tahquitz Valley since we do not yet have a picture of a lemon lily flower from Idyllwild Park.)
  • Lower: a field of flowers of volcanic gilia, Gilia ochroleuca ssp. exilis, and Palomar monkeyflower, Mimulus diffusus (called M. palmeri in the Jepson Manual), covering an area.
See Michael Charters' Field Trips Photo Gallery: Idyllwild County Park, San Jacinto Mountains, June 2010 for other pictures of flowers from Idyllwild Park.


Idyllwild Park, a Riverside County Park, is located on the west side of Idyllwild. See an interactive Google map for driving directions and an overview of its location, and a Park map giving its location and access roads in Idyllwild. The latter map shows some of the hiking trails and the locations of the Nature Center, Campground and other features. The trails are best shown in this Detailed Trail Map with mileages.

The Park contains a Nature Center on the north side, and a campground on the south side. Day use fees of $3 per adult, $2 per child and $1 per dog are charged.

The Park is roughly one mile long in the north-south direction at its maximum extent, and one half mile long in the east-west direction at its maximum extent. Its shape is roughly rectangular, with a rectangular piece missing on its northwest corner and a triangular piece missing on its southeast corner, with a total area of 202 acres.

Lilly Creek is the main feature of the western part of the Park, essentially forming the western boundary in the north Park and cutting a steep and deep gorge through the south Park as erosion has proceeded upstream from Strawberry Creek. There is over 560 feet of relief from the bottom of Lilly Creek to the top of the knolls above its banks (5200 feet elevation to over 5760 feet).

The USGS Topo Map uses the name Lilly Creek, although it is given as Lily Creek in other sources. The origin of the name is unknown. But since lemon lilies grow in the creek, it is probable that is the origin of the name. Historic references often spell lily as lillies, so the difference in the spelling is not significant.

Idyllwild Creek is the main topographic feature of the eastern and southeastern sides of the park, although most of the northern part of the creek is on private property to the east. The name Idyllwild Creek appears on a local Idyllwild map, but not on the USGS Topographic Map. Idyllwild Creek has a steep western bank extending to Idyllwild Park, and a gentle eastern bank that is essentially a relatively minor feature in Strawberry Creek Valley. Because of the latter, Idyllwild Creek is flatter in elevation profile along its course than Lilly Creek. Idyllwild Creek forms the southeastern boundary of the park and joins Lilly Creek near the southern end of the Park.

The topography of the Park is shown in the Google Earth image in Fig. 3:

Fig. 3. Google Earth View of Idyllwild Park (approximately the shaded green area) looking northwest. The gorge of Lilly Creek is visible in the center, with the campground road contouring up Lilly Creek to cross the Creek. Lilly Creek has created the steep slopes in the southern half of the park. In contrast, the northern half of the park is much flatter. The steep western bank of Idyllwild Creek is mostly to the east of the Park. It is probably not a coincidence that the meadow visible just above the confluence of Lilly and Idyllwild creeks is located there, due to the presumed-higher water table in that area. Click on the picture for a larger unlabeled version.

The elevation profile of Lilly Creek in Idyllwild Park confirms what is seen in Fig. 3. The erosional nick point, shown by the yellow circle in the middle of the profile, occurs just southwest of the Nature Center, at the location shown in Fig. 1. Above that, the creek elevation profile has a constant slope of about 450 feet per mile. Below that the creek has an elevation profile of about 1200 feet per mile until it levels out in the flattish Strawberry Creek area.

Idyllwild Park has a rich vascular-plant flora due to its many different habitats resulting from its topography, and the fairly well-watered Lilly Creek, at least before it was dammed at Foster Lake with upstream diversions for the Idyllwild Water District.

Fieldwork Dates

Our main plant surveys occurred on all-day trips on 15, 21 and 25 June 2010, and 20 November 2012, by the following people:

Table 1. Major floral surveys of Idyllwild Park

DateSurveyed Area of ParkParticipants
15 June 2010Northwest, mostly on trailTom Chester, Dave Stith and Kay Madore
21 June 2010Northwest, mostly in Lilly CreekTom Chester, Dave Stith and Michael Charters
25 June 2010Southwest, mostly on trail, and NortheastTom Chester, Dave Stith and Michael Charters
20 November 2012Southeast and NortheastTom Chester and Dave Stith

On each survey, every species encountered was recorded, with its first location recorded by GPS. Abundances were estimated for each species at the end of each survey, by estimating the minimum number of plants we saw along our entire survey up to a maximum of 99 plants.

In addition:

Floral Regions

Our surveys showed dramatic differences in the flora between different areas of the park, so we decided to present the flora separately for three different areas of the park. Our division is shown in Fig. 4, which also shows the hiking trails of the Park. As is almost always the case, boundaries between areas are sometimes somewhat arbitrary.

Fig. 4. Map showing Idyllwild Park, its hiking trails, and division into three floral areas (larger version). Base map from Riverside County Parks

The Southwest area has the clearest delineation, being the only part of Idyllwild Park significantly west of Lilly Creek, with a large area of chaparral plants not present in the rest of the Park. Its boundary with the southeast section is taken to be between the Hillside Trail and the Campground Road.

The Southeast area has extensive flattish moist areas not present in the rest of the Park; the only meadow in the Park; significant human disturbance from the 88 site campground; and borders an extensively-developed residential area. Its northern boundary is taken to be approximately along the top of the steep area to the north. This roughly corresponds to the northern boundary of the southwest section. Trails from the Nature Center that lead to the campground allow a fairly clear delineation on the north, except along the Perimeter Trail. Fortunately, the flora doesn't vary much in that section of the Perimeter Trail, so it makes little difference exactly where the boundary is placed.

The southeast portion has south-facing slopes similar to those of the southwest portion.

The North area is distinctive due to its terrain being above the erosional nick point, and hence not as steep as in the other two sections. Probably as a result of its gentler topography, it is covered by pine forest with no significant chaparral component. It contains the upper portion of Lilly Creek, which has a flatter elevation profile in the north.

The routes we have surveyed as of 24 November 2012, along with the GPS points where the first occurrence of species were recorded, are shown in this map (The GPS points shown on the north side of State Route 243 were not used for the Park Flora.) Although our surveys were not done with these divisions into flora areas in mind, our surveys were perhaps not-coincidentally usually confined to one area.

A few surveys crossed boundaries of the floral areas. For those, it was straightforward to use the GPS locations to assign the first location of species to floral areas. However, plant abundance estimates from those surveys could not be ex post facto separated into the floral areas.

Another effect from surveys that crossed boundaries is a possible loss of completeness in the checklist for the second floral area traversed. This occurs when species are present in both floral areas, since those species would be recorded only from their first location, which would be in the first floral area traversed. Fortunately, we have enough surveys beginning in each area that this loss of completeness is probably not high.

Now that we have the floral areas defined, future surveys can produce better abundance estimates and species lists for each area.

Species Checklist

The following is the latest plant checklist for the park from all surveys to 2 May 2017.

We would have included vouchers from Idyllwild Park, but there are no vouchers online that we can be certain have come from the Park itself. There are no online vouchers as of 29 November 2012 whose locality is Idyllwild Park. There are many vouchers with a locality of Idyllwild; we have collected those separately in a Voucher Flora of the Idyllwild Area. However, some of those vouchers are not in fact even from Idyllwild itself, since vouchers often just list the nearest city within 20 miles or even more.

Basic information about the checklist presentation and links:

A few species have qualifiers given in front of the scientific name, indicating that the species determination is not 100%. Notes on some of those species are given in the next section.

An asterisk before the Common Name indicates a non-native taxon.

The three columns under the header #Plants give a minimum estimate of the number of plants we saw along our entire survey in each area (up to a maximum of 99 plants). The southwest area (SW) is presented first, since its flora is significantly different from the other two areas, being dominated by chaparral. The other two areas, the north half of the park (N) and the southeast part of the park (SE), have significant riparian areas and are dominated by the pine forest.

See Field Trips Photo Gallery: Idyllwild County Park, San Jacinto Mountains, June 2010 by Michael Charters for photographs of many of these species from 6/21/10 and 6/25/10.

Version for printing, without other text on this page: html (8 pages) or pdf Clickbook booklet (2 double-sided pages). (See printing instructions for an explanation of these options)

#FamilScientific Name(*)Common Name# Plants
1DennsPteridium aquilinum var. pubescensbracken 9990
2EquisEquisetum arvensefield horsetail  10
3EquisEquisetum laevigatumsmooth scouring rush 99 
4PteriCheilanthes covilleibeady lipfern5  
5PteriPellaea mucronata var. mucronatabird's-foot fern10 2
6WoodsCystopteris fragilisbrittle bladder fern 1 
7CupreCalocedrus decurrensincense-cedar999980
8Cupre~Hesperocyparis stephensoniiStephenson cypress  10
9PinacAbies concolorwhite fir 2 
10PinacPinus coulteriCoulter pine153099
11PinacPinus jeffreyiJeffrey pine 171
12PinacPinus lambertianasugar pine104020
13PinacPinus ponderosa var. pacificaponderosa pine69999
14LauraUmbellularia californicaCalifornia bay1  
15AdoxaSambucus nigra ssp. caeruleablue elderberry  2
16AnacaRhus aromaticabasketbush30  
17ApiacTauschia parishiiParish's tauschia5050 
18ApocyAsclepias californicaCalifornia milkweed5  
19ApocyAsclepias eriocarpaIndian milkweed102535
20ApocyVinca major*greater periwinkle 299
21AsterAchillea millefoliumyarrow205020
22AsterAgoseris retrorsaspear-leaved mountain dandelion99299
23AsterAmbrosia acanthicarpabur-ragweed 25 
24AsterArtemisia douglasianamugwort 9999
25AsterArtemisia dracunculuswild tarragon 135
26Aster~Artemisia ludoviciana ssp. albulawhite mugwort  99
27AsterArtemisia ludoviciana ssp. incomptamountain mugwort52030
28AsterArtemisia tridentatabig sagebrush  7
29AsterCirsium occidentale var. californicumCalifornia thistle10 11
30Aster~Cirsium vulgare*bull thistle  25
31AsterCorethrogyne filaginifoliaCalifornia-aster22099
32AsterEricameria cuneata var. cuneatarock goldenbush1  
33AsterEricameria nauseosa var. bernardinaSan Bernardino rubber rabbitbrush18 
34AsterEricameria pinifoliapine goldenbush1  
35AsterErigeron foliosus var. foliosusleafy daisy5099?
36AsterEriophyllum confertiflorum var. confertiflorumgolden yarrow501099
37Aster~Gnaphalium palustrewestern marsh cudweed 99 
38AsterHemizonella minimadwarf madia 99 
39AsterHeterotheca sessiliflora ssp. echioidesbristly goldenaster  1
40AsterHulsea vestita ssp. callicarphabeautiful hulsea2052
41AsterLactuca serriola*prickly lettuce 3 
42AsterLessingia glandulifera var. glanduliferasticky lessingia  99
43AsterMadia gracilisslender madia 20 
44AsterMalacothrix clevelandiiannual malacothrix 1 
45AsterPentachaeta aureagolden daisy9999 
46AsterPseudognaphalium californicumCalifornia everlasting1 1
47AsterPseudognaphalium thermaleslender everlasting102099
48AsterRafinesquia californicaCalifornia chicory5  
49AsterSolidago velutina ssp. californicagoldenrod509999
50AsterSonchus asper ssp. asper*prickly sow thistle 1 
51AsterSonchus oleraceus*sow thistle  2
52AsterStephanomeria virgatatwiggy wreath plant1  
53Aster~Symphyotrichum ascendenslong-leaved aster  45
54AsterTanacetum parthenium*feverfew 9999
55AsterUropappus lindleyisilver puffs205 
56BetulAlnus rhombifoliawhite alder 206
57BoragCryptantha micrantha var. lepidamountain red-root cryptantha999999
58BoragCryptantha muricata var. jonesiiJones' prickly-nut cryptantha9920?
59BoragCryptantha simulanspine cryptantha199 
60BoragPhacelia imbricata var. patulaimbricate phacelia  90
61BoragPhacelia minorwild canterbury bells17  
62BoragPlagiobothrys collinus var. fulvescensCalifornia popcorn flower 5 
63BoragPlagiobothrys collinus var. ursinusBear Valley popcorn flower  30
64BoragPlagiobothrys tenellusslender popcorn flower9999 
65BrassBoechera californicaCalifornia elegant rock-cress509950
66Brass~Descurainia adenophorawhite tansy-mustard  1
67BrassDraba verna*spring draba 9999
68BrassErysimum capitatum var. capitatumwestern wallflower 17 
69BrassHirschfeldia incana*shortpod mustard  99
70BrassLepidium virginicum ssp. menziesiiwild pepper-grass  99
71BrassRorippa curvisiliquacurvepod yellow-cress 2 
72BrassSisymbrium altissimum*tumble-mustard5 99
73CampaHeterocodon rariflorumfew-flowered heterocodon 9 
74CampaNemacladus longiflorus var. longiflorusthread plant4099 
75CampaNemacladus sigmoideussmall-flowered nemacladus 99 
76CapriLonicera subspicata var. denudatasouthern honeysuckle997065
77CaryoCerastium fontanum ssp. vulgare*perennial mouse-ear chickweed 220
78CaryoLychnis coronaria*rose campion 51
79CaryoSilene verecundawhite catch-fly199 
80CaryoStellaria media*common chickweed  10
81ConvoCalystegia occidentalis ssp. fulcratawestern morning-glory5  
82DatisDatisca glomerataDurango root 60 
83DipsaDipsacus sativus*Fuller's teasel  1
84EricaArctostaphylos glandulosaEastwood manzanita3  
85EricaArctostaphylos pringlei ssp. drupaceapink-bracted manzanita999999
86EricaArctostaphylos pungensMexican manzanita 210
87EricaChimaphila menziesiilittle prince's pine  25
88EricaRhododendron occidentalewestern azalea 6030
89EricaSarcodes sanguineasnow-plant26 
90EuphoEuphorbia luridawoodland spurge 1 
91FabacAcmispon americanus var. americanusSpanish clover 99 
92FabacAcmispon heermannii var. heermanniisilky lotus505010
93FabacAcmispon nevadensis var. nevadensisSierra Nevada lotus5090 
94FabacAcmispon strigosusstrigose lotus509999
95FabacAstragalus douglasii var. parishiiParish' Jacumba milk-vetch109940
96FabacHosackia crassifolia var. crassifoliabroad-leaved lotus450 
97FabacLathyrus latifolius*perennial sweet pea  1
98FabacLathyrus vestitus var. vestituswild sweetpea10 80
99FabacLupinus bicolordwarf lupine 3020
100FabacLupinus concinnus ssp. optatusshowy bajada lupine59970
101FabacLupinus excubitus var. austromontanusmountain grape-soda lupine309935
102FabacLupinus formosuswestern lupine99 5
103FabacLupinus latifolius var. parishiiParish's lupine 10 
104FabacTrifolium microcephalumsmall-head field clover 99 
105FabacTrifolium monanthum ssp. grantianummountain carpet clover 5 
106FabacTrifolium variegatumvariegated clover 30 
107FabacTrifolium willdenoviitomcat clover 995
108FabacVicia americana ssp. americanaAmerican vetch  99
109FagacQuercus chrysolepiscanyon live oak509999
110FagacQuercus kelloggiiCalifornia black oak107055
111FagacQuercus wislizeni var. frutescensinterior live oak50 99
112FagacQuercus Xmorehusoracle oak 14
113GentiFrasera parryiParry's green-gentian 169
114GeranErodium cicutarium*redstem filaree  99
115GrossRibes nevadensemountain pink currant 8060
116HyperHypericum scouleriScouler's St. Johnswort 10 
117LamiaMentha spicata*spearmint  20
118LamiaMonardella breweri ssp. lanceolatamustang mint501010
119LamiaScutellaria siphocampyloidescurve-flowered skullcap50 10
120LamiaStachys rigidarigid hedge-nettle 9999
121LamiaTrichostema austromontanum ssp. austromontanumsouthern bluecurls 99 
122LoasaMentzelia dispersascattered blazing star10  
123MalvaSidalcea sparsifoliacheckerbloom  20
124MontiCalyptridium monandrumsand cress30103
125MontiClaytonia parviflora ssp. parvifloranarrow-leaved miner's lettuce 2 
126MontiClaytonia parviflora ssp. viridisgreen miner's lettuce3099 
127MontiClaytonia perfoliata ssp. mexicanasouthern miner's lettuce 993
128MontiClaytonia perfoliata ssp. perfoliataminer's lettuce 99 
129OnagrCamissonia strigulosastrigose suncup  2
130OnagrCamissoniopsis confusaSan Bernardino suncup303 
131OnagrClarkia rhomboideadiamond-petaled clarkia109999
132OnagrEpilobium brachycarpumautumn willowweed 5 
133OnagrEpilobium canum ssp. latifoliummountain California-fuchsia23045
134OnagrEpilobium ciliatum ssp. ciliatumwillowherb 9999
135OnagrEpilobium densiflorumspike primrose 10 
136OnagrEpilobium glaberrimum ssp. glaberrimumglaucus willowherb 15 
137OnagrGayophytum heterozygumzig-zag gayophytum50  
138Onagr~Gayophytum oligospermumpinegrove groundsmoke150 
139OnagrGayophytum sp.groundsmoke  30
140OnagrOenothera elata ssp. hirsutissimaHooker's evening-primrose  30
141OrobaCastilleja applegatei ssp. martiniiMartin's paintbrush10 20
142OrobaCastilleja minor ssp. spiralislesser paintbrush 99 
143OrobaCordylanthus rigidus ssp. setigerbristly bird's beak99 99
144PhrymMimulus aurantiacus var. pubescenshairy bush monkeyflower20 23
145PhrymMimulus brevipeswide-throated yellow monkeyflower99 2
146PhrymMimulus cardinalisscarlet monkeyflower 70 
147PhrymMimulus diffususPalomar monkeyflower 99 
148PhrymMimulus floribundusfloriferous monkeyflower5099 
149PhrymMimulus fremontii var. fremontiiFremont's monkeyflower9950 
150PhrymMimulus guttatuscommon monkeyflower 99 
151PhrymMimulus pilosusfalse monkeyflower3099 
152PlantAntirrhinum coulterianumCoulter's snapdragon1 5
153PlantKeckiella ternata var. ternatawhorledleaf penstemon992010
154PlantPenstemon centranthifoliusscarlet bugler502075
155PlantPenstemon labrosusSan Gabriel beardtongue26010
156PlantVeronica americanaAmerican speedwell  99
157PlataPlatanus racemosawestern sycamore  1
158PolemAllophyllum glutinosumsticky false-gilia10  
159PolemCollomia grandifloralarge-flowered collomia  61
160PolemEriastrum sapphirinumsapphire woolly-star  10
161PolemGilia diegensiscoastal gilia 42 
162PolemGilia ochroleuca ssp. exilisvolcanic gilia2099 
163PolemLeptosiphon ciliatuswhisker-brush109999
164PolemLeptosiphon lemmoniiLemmon's linanthus  99
165PolemSaltugilia australissouthern gilia99  
166PolemSaltugilia splendens ssp. splendenssplendid gilia2099 
167PolygEriogonum apiculatumSan Jacinto buckwheat 99 
168PolygEriogonum davidsoniiDavidson's buckwheat2  
169PolygEriogonum gracile var. incultumslender buckwheat  99
170Polyg~Eriogonum molestumpineland buckwheat 50 
171Polyg~Eriogonum nudum var. pauciflorumnaked buckwheat  1
172PolygEriogonum wrightii var. membranaceumWright's buckwheat203040
173PolygPolygonum aviculare ssp. depressum*knotweed  1
174PolygRumex acetosella*common sheep sorrel  50
175PolygRumex californicuswillow-leaved dock 5040
176PolygRumex conglomeratus*whorled dock1  
177PolygRumex sp.dock 21
178PolygSidotheca trilobatathree-lobed oxytheca50  
179RanunAquilegia formosawestern columbine 8080
180RanunClematis ligusticifoliavirgin's bower  1
181RanunThalictrum fendleri var. fendleriFendler's meadow-rue 6060
182RhamnCeanothus leucodermischaparral whitethorn1635
183RhamnCeanothus palmeriPalmer's ceanothus 1 
184RhamnFrangula californicaCalifornia coffeeberry 86
185RhamnRhamnus ilicifoliahollyleaf redberry1  
186RosacAdenostoma fasciculatumchamise99  
187RosacAmelanchier utahensisUtah service-berry 2 
188RosacCercocarpus betuloides var. betuloidesbirch-leaf mountain-mahogany99 6
189RosacDrymocallis glandulosasticky cinquefoil  40
190RosacDrymocallis glandulosa var. reflexasticky cinquefoil299 
191RosacDrymocallis lactea var. lacteaNevada cinquefoil 4 
192RosacFragaria vescawoodland strawberry 9999
193RosacHorkelia clevelandii var. clevelandiiCleveland's horkelia 995
194RosacPotentilla gracilis var. fastigiataslender cinquefoil  30
195RosacPrunus virginiana var. demissawestern choke-cherry 20 
196RosacRosa californicaCalifornia wild rose 9999
197RubiaGalium angustifolium ssp. angustifoliumnarrowleaf bedstraw157070
198RubiaGalium aparinecommon bedstraw 6099
199SalicPopulus fremontii ssp. fremontiiFremont cottonwood  10
200SalicSalix laevigatared willow 1 
201SalicSalix lasiandra var. lasiandrashining willow  11
202SalicSalix lasiolepisarroyo willow 1560
203ScropVerbascum thapsus*common mullein  12
204UrticUrtica dioica ssp. holosericeastinging nettle 9999
205ViolaViola purpurea ssp. quercetorumgoosefoot yellow violet20260
206ViscaArceuthobium campylopodumpine dwarf-mistletoe59999
207ViscaPhoradendron serotinum ssp. tomentosumoak mistletoe2050 
208AgavaHesperoyucca whippleichaparral yucca20 5
209CyperCarex fractafragile sheath sedge 99 
210CyperCarex multicaulisforest sedge10303
211CyperCarex praegracilisclustered field sedge  99
212CyperCarex sentaswamp sedge 70 
213Cyper~Carex subfuscabrown sedge 12 
214CyperScirpus microcarpuspanicled bulrush 9999
215IridaIris germanica*iris 1 
216JuncaJuncus bufonius var. occidentaliswestern toad rush 30 
217JuncaJuncus effusus ssp. austrocalifornicusSonoran rush 7090
218JuncaJuncus mexicanusMexican rush20299
219JuncaJuncus oxymerispointed rush 99 
220LiliaCalochortus palmeri var. munziiSan Jacinto mariposa lily50  
221LiliaLilium parryilemon lily 30 
222OrchiPiperia elongatadense-flowered rein orchid102025
223PoaceAgrostis pallensseashore bentgrass3 50
224Poace~Agrostis scabrarough bentgrass 5 
225PoaceBromus carinatus var. carinatusCalifornia brome1099 
226PoaceBromus diandrus*ripgut brome11222
227PoaceBromus halliiHall's brome20 60
228PoaceBromus madritensis ssp. rubens*red brome  1
229PoaceBromus tectorum*downy brome999999
230PoaceCynodon dactylon*Bermuda grass 1 
231PoaceDeschampsia elongataslender hairgrass 36
232PoaceElymus elymoidessquirreltail309990
233PoaceElymus glaucus ssp. glaucusblue wildrye2099 
234PoaceElymus hispidus*intermediate wheatgrass  1
235PoaceElymus trachycaulus ssp. trachycaulusslender wheatgrass  99
236PoaceFestuca microstachyssmall fescue10  
237PoaceFestuca myuros*rattail fescue999999
238PoaceHordeum murinum*foxtail barley  30
239PoaceKoeleria macranthaJune grass99 99
240PoaceMelica imperfectacoast-range melic75 16
241PoaceMuhlenbergia rigensdeergrass992070
242PoacePhalaris canariensis*canarygrass 2 
243PoacePoa bulbosa ssp. vivipara*bulbous blue grass99 99
244PoacePoa pratensis ssp. agassizensisKentucky blue grass 2020
245PoacePoa secunda ssp. secundaone-sided bluegrass5099 
246PoaceSecale cereale*rye51 
247PoaceStipa coronatagiant needlegrass30  
248PoaceStipa occidentalis var. pubescensElmer's needlegrass530 
249ThemiBloomeria croceagoldenstar2060 
250ThemiDichelostemma capitatum ssp. capitatumblue dicks5099 

Notes on Some Species

Hesperocyparis stephensonii. There are about 10 mature trees that have been planted along the southernmost boundary of the park next to a residential area. Since these are planted trees, they could be Hesperocyparis arizonica, or some hybrid between those two species.

Mimulus diffusus. The Jepson Manual combined this species with the similar M. palmeri species found in the Transverse Ranges and north. M. diffusus is endemic to the Peninsular Ranges and was considered separate from M. palmeri in Munz 1974. Fraga (2012) demonstrated that there were actually five separate species lumped under the name M. palmeri, and restored M. diffusus as a separate species. Unfortunately, all the Mimulus in California have now been transfered to the genus Erythranthe, so the next floral treatment by the Jepson Manual will probably call this species Erythranthe diffusa.

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Copyright © 2010-2017 by Tom Chester, Dave Stith, Bruce Watts, Michael Charters, Kay Madore and Nancy Accola.
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Last update: 5 May 2017