Plant Guide to Mt. Wilson Trail

Mile	s	#	id?	Common Name	Latin Name	#here	#all
0.00	r			Begin guide at trail sign-in post; elevation 1000 feet (305 m). Check for german ivy, Senecio mikanioides, offtrail to left.
0.00	l	1		*Bermuda buttercup	Oxalis pes-caprae	99 / 9	7
0.00	r	2		*sow thistle	Sonchus oleraceus	20 / 9	28
0.00	b	3		*smilo grass	Piptatherum miliaceum	99 / 9	20
0.00	b	4	~	*Cootamundra wattle	Acacia baileyana	2 / 2	1
0.00	l	5		wild-cucumber	Marah macrocarpus var. macrocarpus	20 / 9	42
0.00	b	6		coast live oak	Quercus agrifolia var. agrifolia	/	43
0.00	l	7		poison oak	Toxicodendron diversilobum	50 / 9	43
0.00	l	8	?	oak?
0.00	l			(American agave, Agave americana)
0.00	r	9		*common chickweed	Stellaria media	99 / 9	22
0.02	l			(chasmanthe, Chasmanthe floribunda)
0.02	l	10	~	*golden wattle	Acacia longifolia	1 / 1	3
0.02	r	11		laurel sumac	Malosma laurina	10 / 9	40
0.02	l	12		San Gabriel Mtns. leather oak	Quercus durata var. gabrielensis	10 / 9	5
0.02	l	13	?	baby plant like cheeseweed, Malva parviflora
0.03	r	14		heartleaf penstemon	Keckiella cordifolia	30 / 9	26
0.04	r	15		hollyleaf redberry	Rhamnus ilicifolia	10 / 9	42
0.04	l	16		toyon	Heteromeles arbutifolia	10 / 9	44
0.04	r	17		*greater periwinkle	Vinca major	5 / 1	8
0.04	l	18	sp	gooseberry	Ribes sp.	2 / 2
0.04	l	19		southern honeysuckle	Lonicera subspicata var. denudata	10 / 9	40
0.04	r	20	?	unk young annual, rosette of lvs like an Asteraceae
0.04	r	21		*petty spurge	Euphorbia peplus	10 / 1	9
0.04	r	22	sp	phacelia or eucrypta
0.04	r	23		blue elderberry	Sambucus mexicana	1 / 1	44
0.05	r	24	sp	young 3 needle pine	Pinus sp.	1 / 1
0.06	r	25	sp	annual grass
0.06	b	26	~	bittercress	Cardamine oligosperma	30 / 9	6
0.07	r	27	~	*bur chervil	Anthriscus caucalis	30 / 5	8
0.07	r	28		black sage	Salvia mellifera	10 / 9	39
0.07	r	29		California sagebrush	Artemisia californica	10 / 9	44
0.08	r			(unidentified planted tree)
0.08	l	30		Southern California black walnut	Juglans californica var. californica	1 / 1	6
0.09	r	31		short-leaved cliff-aster	Malacothrix saxatilis var. tenuifolia	20 / 9	12
0.10	r	32	~	scrub oak X Engelmann oak	Quercus berberidifolia X Q. engelmannii	2 / 2	3
0.10	r	33		coffee fern	Pellaea andromedifolia	5 / 5	22
0.10	l	34		hollyleaf cherry	Prunus ilicifolia ssp. ilicifolia	10 / 9	12
0.10	l	35		*shortpod mustard	Hirschfeldia incana	30 / 9	51
0.10	r	36		*jade plant	Crassula ovata	1 / 1	3
0.12	r	37	~	common rupertia	Rupertia physodes	10 / 3	1
0.12	r	38		mule fat	Baccharis salicifolia	1 / 1	36
0.12	r	39		*sweet alyssum	Lobularia maritima	99 / 9	5
0.12	r	40	?	unk lily-like per	?	2 / 2
0.13	r	41		*trailing lantana	Lantana montevidensis	5 / 1	1
0.13	r	42		*Australian brass-buttons	Cotula australis	10 / 1	15
0.13	l	43		annual sunflower	Helianthus annuus	3 / 3	10
0.14	l	44		birch-leaf mountain-mahogany	Cercocarpus betuloides var. betuloides	20 / 9	18
0.16	r	45	~	Aleppo pine	Pinus halapensis	1 / 1	4
0.16	r	46	sp	aonium	Aonium sp.	1 / 1
0.17	l	47		*chasmanthe	Chasmanthe floribunda	5 / 1	2
0.17	r	48		California buckwheat	Eriogonum fasciculatum var. foliolosum	20 / 9	48
0.18	r	49	?	unk small plant like beeplant, sans a bad smell	?	3 / 1
0.18	r	50		aloe	Aloe sp.	/
0.19				Trail has steps up to road; turn left on road
0.20	r	51		half-hairy ceanothus	Ceanothus oliganthus var. sorediatus	2 / 2	2
0.20	l	52	?	unk per / ss	?	1 / 1
0.20	l			Sign: "Mt. Wilson Trail: First Water 1.3 [mi]; Orchard Camp 3.3; Manzanita Ridge ?; Mt. Wilson 6.8"
0.20	r	53		*English ivy	Hedera helix	5 / 1	1
0.20	r	54		*oleander	Nerium oleander	1 / 1	3
0.21	r			Fire hydrant; open gate across road
0.22	b	55		*redstem filaree	Erodium cicutarium	99 / 9	50
0.22	l	56		*soft chess	Bromus hordeaceus	/	38
0.22	l	57		*Bermuda grass	Cynodon dactylon	1 / 1	26
0.22	l	58		*white-stemmed filaree	Erodium moschatum	50 / 5	18
0.22	l	59		*California burclover	Medicago polymorpha	30 / 5	39
0.22	l			*cheeseweed	Malva parviflora+	10 / 1	18
0.22	r	60		chaparral yucca	Yucca whipplei	3 / 3	29
0.22	r	61		*slender wild oats	Avena barbata	10 / 1	26
0.22	l	62		*goldentop	Lamarckia aurea	10 / 1	13
0.22	l	63		bur-ragweed	Ambrosia acanthicarpa	1 / 1	15
0.22	r	64		*horehound	Marrubium vulgare	1 / 1	30
0.23	l			Sign: "No Campfires"
0.23	l	65	~	*Canary Island date palm	Phoenix canariensis	1 / 1	2
0.24	l	66	ssp	*foxtail barley	Hordeum murinum	10 / 1	3
0.24	l	67		white nightshade	Solanum douglasii	3 / 3	15
0.26	l			Jct. use path; Trail rounds ridge to left
0.26				Road curves left 90°
0.26	r	68		*ripgut brome	Bromus diandrus	10 / 1	45
0.26	r	69		*narrowleaf filago	Filago gallica	20 / 5	43
0.27	l	70	?	unk small plant like beeplant, sans a bad smell, different from previous one
0.27	l	71		Engelmann - leather oak hybrid	Quercus durata var. gabrielensis X Q. engelmannii	2 / 2	4
0.27	l			(mission cactus, Opuntia ficus-indica)
0.28	r	72		wild sweetpea	Lathyrus vestitus var. vestitus	10 / 9	10
0.28	l	73	ssp	deerweed	Lotus scoparius var. scoparius	20 / 9	23
0.28	l	74	~	*tocalote	Centaurea melitensis	10 / 1	43
0.28	r	75	~	California chicory	Rafinesquia californica	10 / 9	20
0.29	l	76		blue dicks	Dichelostemma capitatum ssp. capitatum	10 / 2	42
0.31	l	77		golden yarrow	Eriophyllum confertiflorum var. confertiflorum	10 / 9	52
0.32	r	78	~	acourtia	Acourtia microcephala	1 / 1	13
0.32	l	79		California polypody	Polypodium californicum	20 / 3	16
0.33	l	80		goldback fern	Pentagramma triangularis ssp. triangularis	20 / 5	23
0.33	l	81	~	*scarlet pimpernel	Anagallis arvensis	30 / 5	25
0.33	l	82		branching phacelia	Phacelia ramosissima var. latifolia	30 / 9	33
0.33	l	83	?	California lace fern	Aspidotis californica+	30 / 9	9
0.33	l	84		narrowleaf bedstraw	Galium angustifolium ssp. angustifolium	10 / 9	43
0.34	r	85	?	unk young plants, ternate leaf
0.34	r	86	sp	virgin's bower?	Clematis lasiantha?	10 / 1
0.34	l	87		bicolored everlasting	Gnaphalium bicolor	30 / 9	29
0.35	l	88		leafy daisy	Erigeron foliosus var. foliosus	/	35
0.35	l	89		common bedstraw	Galium aparine	50 / 5	39
0.36	l	90	~	coast-range melic	Melica imperfecta	10 / 9	39
0.38	l	91		bush monkeyflower	Mimulus aurantiacus	5 / 5	41
0.38	l	92	?	unk honking rosette	Verbascum?	1 / 1
0.39				Trail turns right 90°
0.39	l	93		California brickellbush	Brickellia californica	30 / 9	28
0.39	r	94		*castor bean	Ricinus communis	10 / 3	15
0.40	l	95		collar lupine	Lupinus truncatus	10 / 5	22
0.40	l	96		California suncup	Camissonia californica	50 / 9	18
0.40	l	97		stinging lupine	Lupinus hirsutissimus	20 / 9	13
0.40	l	98		*tree tobacco	Nicotiana glauca	5 / 1	19
0.40	l	99		south coast morning-glory	Calystegia macrostegia ssp. intermedia	1 / 1	16
0.41	l	100		Nevin's brickellia	Brickellia nevinii	10 / 9	4
0.42	l	101		chamise	Adenostoma fasciculatum	1 / 1	37
0.44	l	102		small-seeded spurge	Chamaesyce polycarpa	30 / 9	12
0.44	l	103		giant needlegrass	Achnatherum coronatum	10 / 9	23
0.47	l	104		climbing bedstraw	Galium nuttallii ssp. nuttallii	5 / 5	30
0.48	l	105		long-stemmed buckwheat	Eriogonum elongatum var. elongatum	10 / 9	23
?		106		*garden cosmos	Cosmos bipinnatus	1 / 1	1
0.50				Trail rounds ridge to left
0.50	r	107		*mission cactus	Opuntia ficus-indica	1 / 1	6
0.52	l	108	~	chia	Salvia columbariae	50 / 9	20
0.54	r	109		chaparral whitethorn	Ceanothus leucodermis	3 / 2	14
0.54	l	110	~	showy penstemon	Penstemon spectabilis var. spectabilis	1 / 1	12
0.56	b	111		California four o'clock	Mirabilis californica	50 / 9	19
0.59				Switchback left at ridge
0.62	r	112	~	California dodder	Cuscuta californica var. californica	1 / 1	15
0.64	l	113	ssp	western thistle	Cirsium occidentale	1 / 1	7
0.64	l	114	?	southern Indian pink?	Silene laciniata ssp. major?	1 / 1
0.64	l	115		threadstem	Pterostegia drymarioides	30 / 5	22
0.64	l	116		Bigelow's spike-moss	Selaginella bigelovii	20 / 5	18
0.66	l	117		California fuchsia	Epilobium canum ssp. canum	5 / 1	17
0.67	l	118		scarlet larkspur	Delphinium cardinale	30 / 9	6
0.70	l	119		saw-toothed goldenbush	Hazardia squarrosa var. grindelioides	1 / 1	34
0.70				Trail curves right at drainage
0.73	l	120		*common beggar-ticks	Bidens pilosa var. pilosa	10 / 1	4
0.73	l	121		sugar bush	Rhus ovata	2 / 2	24
0.75	b	122		wild pepper-grass	Lepidium virginicum var. pubescens	5 / 1	6
0.77	l	123		wild canterbury bells	Phacelia minor	20 / 9	15
0.77	l	124		white sage	Salvia apiana	2 / 2	35
0.79	l			Switchback left at ridge; Jct. step use path (ridge route to Jones Peak)
0.79	l	125	~	elegant clarkia	Clarkia unguiculata	10 / 1	4
0.79	l	126	?	calochortus or muilla31
0.79	l	127	sp	clover	Trifolium sp.	20 / 5
0.81	l			Beautiful "hanging garden" of polypody and spike-moss
0.84	l	128	sp	dudleya	Dudleya lanceolata or D. cymosa	10 / 5
0.84	l	129		bird's-foot fern	Pellaea mucronata var. mucronata	2 / 2	29
0.88	l			Check for different delphinium
0.88	l	130		prickly cryptantha	Cryptantha muricata	50 / 5	15
0.88	l	131		*common groundsel	Senecio vulgaris	30 / 5	16
0.88	r	132		California buckwheat	Eriogonum fasciculatum var. polifolium	/	16
0.90	l	133		lace-pod	Thysanocarpus laciniatus	10 / 1	5
0.91	l			eucrypta	Eucrypta chrysanthemifolia var. chrysanthemifolia+	10 / 1	23
0.91	r	134		canyon live oak	Quercus chrysolepis	1 / 1	21
0.96	l	135	?	woodland star?	Lithophragma sp.?	1 / 1
1.01	l	136		miner's lettuce	Claytonia perfoliata ssp. perfoliata+	50 / 5	23
1.02	l	137	?	chicory-leaved stephanomeria?	Stephanomeria cichoriacea?	2 / 2
1.02	l			Check for different sp., small rosettes of thin pinnate leaf
1.05	r	138	sp	different Brassicaceae?101
1.10	l			Check for different phacelia.
1.11				Switchback left at jct. with original trail, now long-washed out.
1.12	r	139	sp	suncup	Camissonia sp.	50 / 2
1.12	r	140	?	rattail fescue?	Vulpia myuros?	/
1.14				Switchback right.
1.15				Switchback left.
1.17				Jct. fenced-off trail bypassed in 2004; continue straight
1.18	l	141		California bay	Umbellularia californica	1 / 1	12
1.20	l	142		California wood fern	Dryopteris arguta	1 / 1	16
1.20				Switchback right.
1.21	l	143		yarrow	Achillea millefolium	5 / 1	12
1.24	l			Check for Agoseris sp.
1.28	r	144		white everlasting	Gnaphalium canescens ssp. microcephalum	1 / 1	36
1.32	r	145		purple nightshade	Solanum xanti	1 / 1	12
1.45	r			miner's lettuce population with mixed sspp.
1.45	l	146	~	imbricate phacelia	Phacelia imbricata ssp. imbricata	5 / 1	2
1.47	l	147		California everlasting	Gnaphalium californicum	1 / 1	41
1.49				Jct. bypassed trail at drainage
1.49	r	148		mugwort	Artemisia douglasiana	10 / 1	27
1.49				View of nice population of wallflower, Erysimum capitatum ssp. capitatum.
1.49	r	149		southern miner's lettuce	Claytonia perfoliata ssp. mexicana+	20 / 2	22
1.51				Jct. trail to First Water; elevation ~2040 feet (620 m); end plant guide.

http://tchester.org/sgm/plants/guides/mt_wilson_trail.html
Updated 6 February 2005.