Flora of Idyllwild Park, San Jacinto Mountains

Fig. 1. Lilly Creek in Idyllwild Park, just below beginning of steep portion

This represents only a beginning of a flora for Idyllwild Park, a Riverside County Park, located on the west side of Idyllwild. A location map of Idyllwild Park is shown in Fig. 2, along with the route surveyed on 15 June 2010:

Fig. 2. Map showing location of Idyllwild Park, outlined in red, along with the route surveyed on 15 June 2010 (blue lines in Park and along Lilly Creek to the west).

See also unlabeled map.

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, giving a total area of 202 acres.

Lilly Creek is the main feature of the southern half of the Park, where it has cut a steep and deep gorge 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 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.

The Park contains a Nature Center on the north side, and a campground on the south side (map showing the hiking trails, Nature Center, Campground and other features). A day use fee of $2 per adult is charged.

The following draft checklist gives the species we recorded during a survey of ~0.25 miles of Lilly Creek, both inside and just outside of the Park, and ~0.75 miles inside the Park, mostly along trails. Note that a number of species have qualifiers given in the ID? column, indicating that the species assignment is uncertain.

The column #pl/areas gives a minimum estimate of the number of plants we saw along our entire survey (up to a maximum of 99 plants), and the number of different areas in which we remembered seeing each species (up to a maximum of 9 areas). Each area is roughly 0.1 mile, so our entire survey contained ten areas.

The Checklist is sorted first by category - ferns, dicots, and 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 also Voucher Flora of the Idyllwild Area.

#	JM Family	Scientific Name	(*)Common Name	ID?	#pl/areas
1	Dennstaedtiaceae	Pteridium aquilinum var. pubescens	bracken		99/5
2	Dryopteridaceae	Cystopteris fragilis	brittle bladder fern		1/1
3	Equisetaceae	Equisetum laevigatum	smooth scouring rush	~	20/3
4	Cupressaceae	Calocedrus decurrens	incense-cedar		50/5
5	Pinaceae	Pinus coulteri	Coulter pine		3/1
6	Pinaceae	Pinus lambertiana	sugar pine		20/2
7	Pinaceae	Pinus ponderosa	ponderosa pine		99/9
8	Apiaceae	Tauschia parishii	Parish's tauschia		10/1
9	Asclepiadaceae	Asclepias eriocarpa	Indian milkweed		30/3
10	Asteraceae	Achillea millefolium	yarrow		50/3
11	Asteraceae	Agoseris retrorsa	spear-leaved mountain dandelion		2/2
12	Asteraceae	Ambrosia acanthicarpa	bur-ragweed		20/1
13	Asteraceae	Artemisia douglasiana	mugwort		99/5
14	Asteraceae	Artemisia ludoviciana ssp. incompta	mountain mugwort		20/1
15	Asteraceae	Chrysothamnus sp.	rabbitbrush	sp	3/1
16	Asteraceae	Erigeron foliosus var. foliosus	leafy daisy		10/2
17	Asteraceae	Eriophyllum confertiflorum var. confertiflorum	golden yarrow		10/2
18	Asteraceae	Gnaphalium canescens ssp. thermale	slender everlasting	ssp	20/3
19	Asteraceae	Helianthus?	annual sunflower?	?	1/1
20	Asteraceae	Hulsea vestita ssp. callicarpha	beautiful hulsea		5/1
21	Asteraceae	Lactuca serriola	*prickly lettuce		1/1
22	Asteraceae	Lessingia filaginifolia var. filaginifolia	California-aster		10/2
23	Asteraceae	Madia minima	dwarf madia		50/2
24	Asteraceae	Malacothrix clevelandii	annual malacothrix		1/1
25	Asteraceae	Pentachaeta aurea	golden daisy		10/2
26	Asteraceae	Solidago californica	goldenrod		40/3
27	Asteraceae	Sonchus asper ssp. asper	*prickly sow thistle		1/1
28	Asteraceae	Tanacetum parthenium	*feverfew		99/4
29	Asteraceae	Uropappus lindleyi	silver puffs		5/1
30	Betulaceae	Alnus rhombifolia	white alder		20/5
31	Boraginaceae	Cryptantha micrantha	purple-root cryptantha		99/5
32	Boraginaceae	Cryptantha muricata	prickly cryptantha		10/1
33	Boraginaceae	Cryptantha simulans	pine cryptantha		99/5
34	Boraginaceae	Plagiobothrys canescens	grey popcorn flower		99/2
35	Brassicaceae	Arabis sparsiflora var. arcuata	arched elegant rock-cress	~	5/1
36	Brassicaceae	Arabis sparsiflora var. californica	California elegant rock-cress	~	20/5
37	Brassicaceae	Descurainia incisa ssp. incisa	mountain tansy-mustard	~	2/1
38	Brassicaceae	Erysimum capitatum ssp. capitatum	western wallflower		2/1
39	Campanulaceae	Heterocodon rariflorum	few-flowered heterocodon		2/1
40	Campanulaceae	Nemacladus longiflorus var. longiflorus	thread plant		10/1
41	Caprifoliaceae	Lonicera subspicata var. denudata	southern honeysuckle		20/5
42	Caryophyllaceae	Cerastium fontanum ssp. vulgare	*perennial mouse-ear chickweed		2/1
43	Datiscaceae	Datisca glomerata	Durango root		10/4
44	Ericaceae	Arctostaphylos pringlei ssp. drupacea	pink-bracted manzanita		99/9
45	Ericaceae	Rhododendron occidentale	western azalea		30/4
46	Ericaceae	Sarcodes sanguinea	snow-plant		2/2
47	Euphorbiaceae	Euphorbia palmeri	woodland spurge		1/1
48	Fabaceae	Astragalus douglasii var. parishii	Parish' Jacumba milk-vetch		99/5
49	Fabaceae	Lotus crassifolius var. crassifolius	broad-leaved lotus		1/1
50	Fabaceae	Lotus nevadensis var. nevadensis	Sierra Nevada lotus		40/5
51	Fabaceae	Lotus strigosus	strigose lotus		50/5
52	Fabaceae	Lupinus concinnus	bajada lupine		99/5
53	Fabaceae	Lupinus excubitus var. austromontanus	mountain grape-soda lupine		1/1
54	Fabaceae	Lupinus latifolius var. parishii	Parish's lupine	~	10/1
55	Fabaceae	Trifolium microcephalum	small-head field clover		99/2
56	Fabaceae	Trifolium willdenovii	tomcat clover		99/3
57	Fagaceae	Quercus chrysolepis	canyon live oak		50/9
58	Fagaceae	Quercus kelloggii	California black oak		50/5
59	Grossulariaceae	Ribes nevadense	mountain pink currant		50/5
60	Lamiaceae	Stachys ajugoides var. rigida	rigid hedge-nettle		50/5
61	Lamiaceae	Trichostema austromontanum ssp. austromontanum	southern bluecurls		99/2
62	Onagraceae	Camissonia hirtella	field sun-cup	~	1/1
63	Onagraceae	Clarkia rhomboidea	diamond-petaled clarkia		30/3
64	Onagraceae	Epilobium canum ssp. latifolium	mountain California-fuchsia		10/2
65	Onagraceae	Epilobium ciliatum ssp. ciliatum	willowherb	ssp	10/2
66	Onagraceae	Epilobium glaberrimum ssp. glaberrimum	glaucus willowherb		5/1
67	Onagraceae	Gayophytum oligospermum	pinegrove groundsmoke	~	20/2
68	Polemoniaceae	Gilia diegensis	coastal gilia		10/3
69	Polemoniaceae	Gilia ochroleuca ssp. exilis	volcanic gilia		99/5
70	Polemoniaceae	Gilia splendens ssp. splendens	splendid gilia		20/1
71	Polemoniaceae	Linanthus ciliatus	whisker-brush		99/6
72	Polygonaceae	Eriogonum apiculatum	San Jacinto buckwheat	~	20/1
73	Polygonaceae	Eriogonum molestum	pineland buckwheat		99/3
74	Polygonaceae	Eriogonum wrightii var. membranaceum	Wright's buckwheat		10/2
75	Polygonaceae	Rumex salicifolius	willow-leaved dock	ssp	20/3
76	Polygonaceae	Rumex sp.	*dock	sp	2/1
77	Portulacaceae	Claytonia parviflora ssp. viridis	green miner's lettuce	~	50/5
78	Portulacaceae	Claytonia perfoliata ssp. mexicana	southern miner's lettuce		99/3
79	Portulacaceae	Claytonia perfoliata ssp. perfoliata	miner's lettuce		99/3
80	Ranunculaceae	Aquilegia formosa	western columbine		50/5
81	Ranunculaceae	Thalictrum fendleri var. fendleri	Fendler's meadow-rue		30/3
82	Rhamnaceae	Ceanothus leucodermis	chaparral whitethorn		1/1
83	Rhamnaceae	Ceanothus palmeri	Palmer's ceanothus	~	1/1
84	Rhamnaceae	Rhamnus californica	California coffeeberry		3/2
85	Rosaceae	Amelanchier utahensis	Utah service-berry		1/1
86	Rosaceae	Fragaria vesca	woodland strawberry		99/4
87	Rosaceae	Horkelia clevelandii	Cleveland's horkelia		20/2
88	Rosaceae	Potentilla glandulosa ssp. nevadensis	Nevada cinquefoil		4/1
89	Rosaceae	Potentilla glandulosa ssp. reflexa	sticky cinquefoil		50/5
90	Rosaceae	Prunus virginiana var. demissa	western choke-cherry		20/1
91	Rosaceae	Rosa californica	California wild rose		99/6
92	Rubiaceae	Galium angustifolium ssp. angustifolium	narrowleaf bedstraw		20/4
93	Rubiaceae	Galium aparine	common bedstraw		50/5
94	Salicaceae	Salix laevigata	red willow		1/1
95	Salicaceae	Salix lasiolepis	arroyo willow		5/3
96	Scrophulariaceae	Keckiella ternata var. ternata	whorledleaf penstemon		20/2
97	Scrophulariaceae	Mimulus cardinalis	scarlet monkeyflower	~	20/1
98	Scrophulariaceae	Mimulus floribundus	floriferous monkeyflower		99/3
99	Scrophulariaceae	Mimulus fremontii	Fremont's monkeyflower		50/3
100	Scrophulariaceae	Mimulus guttatus	common monkeyflower		99/3
101	Scrophulariaceae	Mimulus pilosus	false monkeyflower		20/1
102	Scrophulariaceae	Mimulus tilingii	larger mountain monkeyflower		99/4
103	Scrophulariaceae	Penstemon labrosus?	San Gabriel beardtongue?	?	1/1
104	Urticaceae	Urtica dioica ssp. holosericea	stinging nettle		99/5
105	Viscaceae	Phoradendron villosum	oak mistletoe		1/1
106	Cyperaceae	Carex fracta	fragile sheath sedge		50/5
107	Cyperaceae	Carex multicaulis	forest sedge		30/5
108	Cyperaceae	Carex senta	swamp sedge		40/5
109	Cyperaceae	Carex subfusca	brown sedge	~	2/1
110	Cyperaceae	Scirpus microcarpus	panicled bulrush		99/5
111	Juncaceae	Juncus bufonius var. occidentalis	western toad rush		30/2
112	Juncaceae	Juncus effusus var. pacificus	Pacific rush		30/5
113	Juncaceae	Juncus mexicanus	Mexican rush		2/2
114	Juncaceae	Juncus oxymeris	pointed rush		99/2
115	Liliaceae	Bloomeria crocea	goldenstar		50/3
116	Liliaceae	Dichelostemma capitatum ssp. capitatum	blue dicks		50/5
117	Liliaceae	Lilium parryi	lemon lily		28/2
118	Orchidaceae	Piperia elongata	dense-flowered rein orchid	~	20/3
119	Poaceae	Achnatherum sp.	needlegrass	sp	1/1
120	Poaceae	Bromus carinatus var. carinatus	California brome		99/8
121	Poaceae	Bromus diandrus	*ripgut brome		10/1
122	Poaceae	Bromus tectorum	*downy brome		99/9
123	Poaceae	Deschampsia elongata	slender hairgrass		1/1
124	Poaceae	Elymus elymoides	squirreltail		99/9
125	Poaceae	Elymus glaucus ssp. glaucus	blue wildrye		30/4
126	Poaceae	Muhlenbergia rigens	deergrass		1/1
127	Poaceae	Poa pratensis ssp. agassizensis	Kentucky blue grass		20/1
128	Poaceae	Poa secunda ssp. secunda	one-sided bluegrass	~	99/5
129	Poaceae	Secale cereale	*rye		1/1
130	Poaceae	Vulpia microstachys var. confusa	confusing fescue	~	99/3

Go to:

• Voucher Flora of the Idyllwild Area
• Plants of Southern California: Regional Floras