Checklist of Upper Willow Creek, San Jacinto Mountains

This is a plant checklist in traditional family order for the plants in Willow Creek from just below Wellman Cienega to the junction with the Laws Connector Trail just north of Laws Camp. It consists of the species found in the surveys for W1, W2, W3 and W4 described in detail in A Quantitative Flora of Willow and Tahquitz Creeks. See that page for a map of the area, survey details, and the participants for each survey.

This checklist includes additional species found in resurveys of Willow Creek in 2018. They include:

• a survey on 9 July 2018 of the lower 0.10 miles of section W3 by Tom Chester, Nancy Accola, and Don Rideout, conducted five years after the Mountain Fire of July 2013. Despite only surveying half the area surveyed on 28 July 2009, the post-fire survey recorded 17 species not found in 2009! The major changes were in the area adjacent to the Creek, where there are now large fields of Penstemon grinnellii, Ceanothus cordulatus and Hosackia crassifolia that were not present pre-fire. There are also much increased numbers of Prunus emarginata, and one large patch of Nicotiana attenuata. Most of the other additions to the list were found in small numbers, such as two plants each of Hulsea heterochroma and Silene parishii. Unfortunately, two non-natives were seen that were not present pre-fire: Bromus tectorum and Cirsium vulgare.

  Most of the other additions were in the immediate area of the Creek, and many of them were probably found simply because this was a survey in a different year, by different people, taking a slightly different route.

• a survey on 13 July 2018 of the upper 0.10 miles of section W3, and the lower 0.10 miles of section W2, by Tom Chester and Don Rideout.

• a survey on 19 July 2018 of another 0.30 miles of section W2, by Tom Chester and Don Rideout.

• a survey on 8 August 2018 of the last 0.30 miles of section W2, by Tom Chester and Don Rideout.

The following gives some basic information about this checklist.

See:

• Notes on the Scientific Names Used At This Site and
• Information about the links from the Scientific Name and Common Name.

An asterisk before the common name indicates a non-native species.

The columns labeled #Pls gives the number of plants of each species that were found in the surveys W1 and W2. The number is a minimum estimate of the number of plants, up to a maximum of 99 plants. If there is no entry in either of those columns, the species was observed in section W3 or W4. In this version of the flora, W1 is given in the last column to make it easier to record the plants in our next field survey of it, since we have now finished resurveying section W2.

Version for printing, without lines and other text on this page: html (4 pages) or pdf Clickbook booklet (1 double-sided page). (See printing instructions for an explanation of these options)

#	Famil	Scientific Name Link goes to Jepson eFlora	(*)Common Name Link goes to Calphotos	#Pls
				W2	W1
Ferns
1	Denns	Pteridium aquilinum var. pubescens	bracken	99	99
2	Equis	Equisetum hyemale ssp. affine	horsetail
3	Polyp	Polypodium hesperium	western polypody
4	Woods	Athyrium filix-femina var. cyclosorum	subarctic lady-fern	30	10
5	Woods	Cystopteris fragilis	brittle bladder fern	75	50
Gymnosperms
6	Cupre	Calocedrus decurrens	incense-cedar
7	Pinac	Abies concolor	white fir	99	99
8	Pinac	Pinus contorta ssp. murrayana	lodgepole pine	10	50
9	Pinac	Pinus jeffreyi	Jeffrey pine	99	10
10	Pinac	Pinus lambertiana	sugar pine	20
Eudicots
11	Adoxa	Sambucus nigra ssp. caerulea	blue elderberry	9
12	Apiac	Osmorhiza berteroi	mountain sweet-cicely	1	10
13	Apiac	Perideridia parishii	Parish's yampah	5	10
14	Apiac	Sphenosciadium capitellatum	ranger's buttons	40	50
15	Aster	Achillea millefolium	yarrow	50	50
16	Aster	Artemisia dracunculus	wild tarragon	15	5
17	Aster	Artemisia ludoviciana ssp. incompta	mountain mugwort	10	10
18	Aster	Cirsium occidentale var. californicum	California thistle
19	Aster	Cirsium vulgare	*bull thistle	5
20	Aster	Corethrogyne filaginifolia	California-aster	1
21	Aster	Erigeron canadensis	horseweed	10
22	Aster	Erigeron foliosus var. foliosus	leafy daisy	10
23	Aster	Hieracium albiflorum	white hawkweed	4
24	Aster	Hieracium horridum	prickly hawkweed	16
25	Aster	Hulsea heterochroma	red-rayed hulsea	1
26	Aster	Hulsea vestita ssp. callicarpha	beautiful hulsea	2
27	Aster	Lactuca serriola	*prickly lettuce	1
28	Aster	Lessingia glandulifera var. glandulifera	sticky lessingia	8
29	Aster	Pseudognaphalium luteoalbum	*common cudweed	6
30	Aster	Pseudognaphalium thermale	slender everlasting	50
31	Aster	Senecio triangularis	arrowhead butterweed	50
32	Aster	Solidago velutina ssp. californica	goldenrod	99
33	Aster	Sonchus asper ssp. asper	*prickly sow thistle	1
34	Aster	Sonchus oleraceus	*sow thistle	1
35	Aster	Stephanomeria virgata	twiggy wreath plant	15
36	Borag	Cryptantha muricata var. denticulata	prickly-nut cryptantha
37	Borag	Phacelia mutabilis	changeable phacelia	99	99
38	Brass	Boechera repanda	Yosemite rockcress
39	Brass	Boechera retrofracta X	mountain rock-cress	8
40	Brass	Erysimum capitatum var. capitatum	western wallflower		20
41	Capri	Symphoricarpos rotundifolius var. parishii	Parish's snowberry	50	10
42	Caryo	Sagina saginoides	pearlwort	11
43	Caryo	Silene parishii	Parish's campion
44	Caryo	Silene verecunda	white catch-fly	20	20
45	Caryo	Stellaria calycantha	northern starwort		5
46	Cheno	Chenopodium atrovirens	forest goosefoot	8	20
47	Cheno	Chenopodium fremontii	Fremont's goosefoot	99
48	Erica	Arctostaphylos patula	green-leaf manzanita	99
49	Erica	Chimaphila menziesii	little prince's pine		4
50	Erica	Pterospora andromedea	pinedrops	5
51	Erica	Pyrola aphylla	leafless wintergreen
52	Erica	Rhododendron occidentale	western azalea	99
53	Erica	Sarcodes sanguinea	snow-plant	30
54	Fabac	Acmispon nevadensis var. nevadensis	Sierra Nevada lotus	40
55	Fabac	Hosackia crassifolia var. crassifolia	broad-leaved lotus	99
56	Fabac	Hosackia oblongifolia var. oblongifolia	streambank lotus	99
57	Fabac	Lupinus hyacinthinus	San Jacinto lupine	99	50
58	Fabac	Lupinus latifolius var. parishii	Parish's lupine	99
59	Fabac	Lupinus polyphyllus var. burkei	bigleaf lupine	10	50
60	Fabac	Trifolium monanthum ssp. grantianum	mountain carpet clover	99	30
61	Fagac	Chrysolepis sempervirens	bush chinquapin	50	5
62	Fagac	Quercus chrysolepis	canyon live oak
63	Geran	Geranium californicum	California geranium	5	10
64	Gross	Ribes cereum var. cereum	wax currant	2	2
65	Gross	Ribes montigenum	mountain gooseberry		5
66	Gross	Ribes nevadense	mountain pink currant	99
67	Gross	Ribes roezlii var. roezlii	Sierra gooseberry	4	10
68	Hyper	Hypericum anagalloides	tinker's penny	50
69	Lamia	Monardella australis ssp. australis	southern mountain-monardella	99
70	Lamia	Monardella nana	short-flowered monardella	50
71	Lamia	Stachys rigida	rigid hedge-nettle	99	10
72	Monti	Calyptridium parryi var. parryi	Parry's sand cress		20
73	Monti	Montia chamissoi	toad lily		30
74	Onagr	Chamerion angustifolium ssp. circumvagum	fireweed	50	15
75	Onagr	Epilobium canum ssp. latifolium	mountain California-fuchsia	99
76	Onagr	Epilobium ciliatum	willowherb	10	3
77	Onagr	Epilobium glaberrimum ssp. glaberrimum	glaucus willowherb	99
78	Onagr	Gayophytum diffusum ssp. parviflorum	groundsmoke	50	50
79	Onagr	Gayophytum oligospermum	pinegrove groundsmoke	99
80	Oroba	Castilleja applegatei ssp. martinii	Martin's paintbrush
81	Oroba	Castilleja miniata ssp. miniata	giant red paintbrush	99	20
82	Oroba	Pedicularis semibarbata	pine lousewort	99	50
83	Phrym	Mimulus cardinalis	scarlet monkeyflower	4
84	Phrym	Mimulus floribundus	floriferous monkeyflower
85	Phrym	Mimulus moschatus	musk monkeyflower	99	99
86	Phrym	Mimulus pilosus	false monkeyflower	45
87	Phrym	Mimulus primuloides var. primuloides	primrose monkeyflower	40	40
88	Phrym	Mimulus tilingii	larger mountain monkeyflower	99	99
89	Plant	Keckiella rothrockii var. jacintensis	San Jacinto Mts. keckiella	50	10
90	Plant	Penstemon grinnellii var. grinnellii	Grinnell's beardtongue	25
91	Plant	Penstemon labrosus	San Gabriel beardtongue	24
92	Plant	Penstemon rostriflorus	beaked penstemon	30
93	Polem	Allophyllum divaricatum	purple false-gilia	99	30
94	Polyg	Bistorta bistortoides	western bistort
95	Polyg	Eriogonum apiculatum	San Jacinto buckwheat
96	Polyg	Eriogonum davidsonii	Davidson's buckwheat	45
97	Polyg	Eriogonum nudum var. pauciflorum	naked buckwheat	99	30
98	Polyg	Eriogonum wrightii var. subscaposum	Wright's buckwheat	1
99	Polyg	Polygonum douglasii	Douglas' knotweed	2	3
100	Polyg	Rumex salicifolius	willow-leaved dock	10	50
101	Ranun	Aquilegia formosa	western columbine	50	10
102	Ranun	Ranunculus alismifolius var. alismellus	slender buttercup
103	Ranun	Thalictrum fendleri var. fendleri	Fendler's meadow-rue	3	30
104	Rhamn	Ceanothus cordulatus	mountain whitethorn	99
105	Rosac	Drymocallis glandulosa var. viscida	sticky cinquefoil	10
106	Rosac	Drymocallis lactea var. lactea	Nevada cinquefoil	10	20
107	Rosac	Horkelia clevelandii var. clevelandii	Cleveland's horkelia	10	2
108	Rosac	Prunus emarginata	bitter cherry	50
109	Rosac	Rubus parviflorus	thimbleberry	99
110	Salic	Salix lutea	yellow willow	10
111	Salic	Salix scouleriana	Scouler's willow	30	2
112	Saxif	Heuchera hirsutissima	shaggy-haired alumroot
113	Solan	Nicotiana attenuata	coyote tobacco	99
114	Urtic	Urtica dioica ssp. holosericea	stinging nettle	40
115	Viola	Viola macloskeyi	small white violet	99
116	Visca	Arceuthobium campylopodum	fir dwarf-mistletoe	10
117	Visca	Phoradendron bolleanum	fir mistletoe
Monocots
118	Cyper	Carex abrupta	abrupt-beak sedge	30
119	Cyper	Carex fracta	fragile sheath sedge	99	99
120	Cyper	Carex heteroneura	vari-nerved sedge
121	Cyper	Carex senta	swamp sedge	99	99
122	Irida	Sisyrinchium bellum	blue-eyed grass	1
123	Junca	Juncus duranii	Duran's rush	4
124	Junca	Juncus longistylis	long-styled rush	5
125	Junca	Juncus macrandrus	long-anthered rush	99
126	Junca	Luzula comosa	hairy wood rush	20	40
127	Lilia	Calochortus invenustus	plain mariposa lily		5
128	Lilia	Lilium parryi	lemon lily	99	8
129	Melan	Veratrum californicum var. californicum	California corn lily	99	99
130	Orchi	Corallorhiza maculata	spotted coralroot	1
131	Poace	Agrostis exarata	spike bentgrass	10
132	Poace	Agrostis idahoensis	Idaho bentgrass	99	50
133	Poace	Bromus carinatus var. carinatus	California brome	10	10
134	Poace	Bromus richardsonii	fringed brome	40	10
135	Poace	Bromus tectorum	*downy brome	99
136	Poace	Deschampsia elongata	slender hairgrass	99	20
137	Poace	Elymus elymoides	squirreltail	14
138	Poace	Elymus glaucus ssp. glaucus	blue wildrye	99
139	Poace	Elymus trachycaulus ssp. trachycaulus	slender wheatgrass		30
140	Poace	Glyceria elata	tall mannagrass	99	99
141	Poace	Muhlenbergia andina	foxtail muhly	5
142	Poace	Muhlenbergia richardsonis	mat muhly	5	5
143	Poace	Poa bolanderi	Bolander's blue grass		20
144	Poace	Poa pratensis ssp. agassizensis	Kentucky blue grass	99	50
145	Poace	Trisetum canescens	tall trisetum	15
146	Rusca	Maianthemum racemosum	large false-solomon's-seal	20

Go to:

• A Quantitative Flora of Willow and Tahquitz Creeks
• Analysis of the Flora of Willow and Tahquitz Creeks
• Plants of Southern California: Regional Floras