Plant Guide to S. Lomas Trail / Monument Road to Trans Preserve Trail, Santa Rosa Plateau

Mile	S	#	id?	Common Name	Latin Name	#here	#all
0.00				Begin S. Lomas Trail at jct with north end of Adobe Loop Trail, heading north; elevation 1840 feet (560 m)
0.00	r	1		coast live oak	Quercus agrifolia var. agrifolia	3 / 2	42
0.00	r			(Jepson's blue wildrye, Elymus glaucus ssp. jepsonii)
0.00	b	2		*wild oats	Avena fatua	99 / 9	26
0.00	b	3		*Italian rye-grass	Lolium multiflorum	10 / 1	18
0.00	r	4		*foxtail barley	Hordeum murinum ssp. leporinum	10 / 1	16
0.00	b	5		*ripgut brome	Bromus diandrus	99 / 9	52
0.00	l	6		*nit grass	Gastridium ventricosum	99 / 9	26
0.00	b	7		*shortpod mustard	Hirschfeldia incana	99 / 9	51
0.00	b	8		California everlasting	Gnaphalium californicum	20 / 9	43
0.00	r	9		*prickly sow thistle	Sonchus asper ssp. asper	5 / 5	30
0.00	r	10		*sow thistle	Sonchus oleraceus	20 / 4	42
0.00	b	11		*smooth cat's ear	Hypochaeris glabra	99 / 9	35
0.00	b	12		*soft chess	Bromus hordeaceus	99 / 9	40
0.00	r	13		*red brome	Bromus madritensis ssp. rubens	30 / 3	53
0.00	b	14		*prickly lettuce	Lactuca serriola	10 / 3	42
0.00	l	15		purple needlegrass	Nassella pulchra	99 / 9	20
0.00	b	16		*short-fruited filaree	Erodium brachycarpum	99 / 9	14
0.00	l	17	~	*windmill pink	Silene gallica	50 / 5	33
0.00	r	18		*bull thistle	Cirsium vulgare	2 / 2	20
0.00	l	19		purple clarkia	Clarkia purpurea ssp. quadrivulnera	99 / 9	26
0.00	b	20		horseweed	Conyza canadensis	10 / 4	37
0.00	b	21		Spanish clover	Lotus purshianus var. purshianus	99 / 9	31
0.00	l	22		vinegar weed	Trichostema lanceolatum	50 / 9	15
0.00	l	23		western ragweed	Ambrosia psilostachya	20 / 3	37
0.00				Sign: "Trail (ahead)"
0.00	l			(blue elderberry, Sambucus mexicana)
0.00				Trail curves left
0.00	r			(laurel sumac, Malosma laurina)
0.01	r	24		white everlasting	Gnaphalium canescens ssp. microcephalum	20 / 3	36
0.01	b	25		*olive	Olea europaea	1 / 1	10
0.01	r	26		Vasey's prickly-pear	Opuntia vaseyi	2 / 2	24
0.01	l	27		common bedstraw	Galium aparine	20 / 3	38
0.01	l	28		California poppy	Eschscholzia californica	1 / 1	29
0.01	b	29		fragrant everlasting	Gnaphalium canescens ssp. beneolens	10 / 3	23
0.01	r	30		hollyleaf redberry	Rhamnus ilicifolia	1 / 1	43
0.01	r	31		toyon	Heteromeles arbutifolia	1 / 1	44
0.02				Trail jogs right and heads uphill over Bedford Canyon Formation.
0.03	b	32		California buckwheat	Eriogonum fasciculatum var. foliolosum	5 / 1	51
0.03				Trail turns left 90°
0.03	r	33		graceful tarplant	Holocarpha virgata ssp. elongata	99 / 9	15
0.03	b	34		*narrowleaf filago	Filago gallica	99 / 9	45
0.03	r	35		*scarlet pimpernel	Anagallis arvensis	20 / 3	33
0.04	b	36		*little horseweed	Conyza bonariensis	1 / 1	16
0.05	r	37		*goldentop	Lamarckia aurea	20 / 1	22
0.05	r	38		*tocalote	Centaurea melitensis	20 / 2	45
0.05	r	39		dove weed	Eremocarpus setigerus	99 / 9	25
0.05	r	40		California sagebrush	Artemisia californica	2 / 2	47
0.06	b	41		California-aster	Lessingia filaginifolia var. filaginifolia	5 / 2	51
0.06	b	42		*California burclover	Medicago polymorpha	99 / 9	40
0.06				(California bee plant, Scrophularia californica ssp. floribunda)
0.06	r			Metal fence post.
0.06		43		*white-stemmed filaree	Erodium moschatum	/	20
0.07	b	44		*long-beaked filaree	Erodium botrys	99 / 9	12
0.07	r			(bush monkeyflower, Mimulus aurantiacus)
0.07	r	45		long-stemmed buckwheat	Eriogonum elongatum var. elongatum	4 / 2	28
0.07	l			Jct. alt trail from Adobes; stay right.
0.08	l	46		western vervain	Verbena lasiostachys var. lasiostachys	1 / 1	10
0.08	r			Metal fence post.
0.08	r	47		California brickellbush	Brickellia californica	1 / 1	28
0.08	r	48		bush monkeyflower	Mimulus aurantiacus	1 / 1	42
0.10	b	49		nodding needlegrass	Nassella cernua	99 / 9	17
0.10	r	50		Indian milkweed	Asclepias eriocarpa	5 / 3	18
0.10	r			(blue dicks, Dichelostemma capitatum ssp. capitatum)
0.12	l			Metal fence post.
0.14	r			(San Diego wreathplant, Stephanomeria diegensis; bicolored everlasting, Gnaphalium bicolor; Engelmann oak, Quercus engelmannii; poison oak, Toxicodendron diversilobum; coast-range melic, Melica imperfecta; California four o'clock, Mirabilis californica)
0.15	r			Jct. use trail
0.16	r			Check for sharp-toothed sanicle, Sanicula arguta
0.16	r	51		checkerbloom	Sidalcea malviflora ssp. sparsifolia	20 / 9	25
0.16	b	52		johnny jump-up	Viola pedunculata	10 / 9	16
0.16	r	53		blue dicks	Dichelostemma capitatum ssp. capitatum	3 / 3	46
0.16	l			Metal fence post.
0.18	r			Sign: "Area Closed"
0.19	r	54		dwarf lupine	Lupinus bicolor	5 / 1	30
0.21	c	55		*weak blue grass	Poa infirma	99 / 9	7
0.21	l	56		*curly dock	Rumex crispus	1 / 1	23
0.21				Cross saddle between two hills
0.22	b	57		*rattail fescue	Vulpia myuros var. myuros	99 / 2	20
0.23	r			Rolled up barbed wire
0.25	l			Metal fence post; view of 200 inch telescope dome on Palomar Mountain at 3 o'clock
0.28	r			Metal fence post (gone in 2006)
0.31	r	58		southern California morning-glory	Calystegia macrostegia ssp. arida+	1 / 1	11
0.31	l			Metal fence post.
0.32				Local high point on trail
0.35				Minor local low point on trail
0.38				Local high point on trail
0.39				Minor local low point on trail
0.40	r	59		telegraph weed	Heterotheca grandiflora	2 / 2	37
0.44	r	60		laurel sumac	Malosma laurina	1 / 1	42
0.44				Jct. Monument Hill Road; elevation ~1955 feet (595 m); turn left on it
0.46	l	61		white-flowering currant	Ribes indecorum	1 / 1	23
0.46	l	62		southern miner's lettuce	Claytonia perfoliata ssp. mexicana	10 / 2	29
0.46	l	63		Engelmann oak	Quercus engelmannii	1 / 1	23
0.49	l	64		blue-eyed grass	Sisyrinchium bellum	1 / 1	20
0.51				Road curves left
0.56				Poppy Hill dead ahead; road curves right
0.63	l	65		*knotweed	Polygonum arenastrum	5 / 1	21
0.64	b			Enter first fairly pristine area, dominated by native needlegrass, Nassella sp., not wild oats, Avena sp.
0.67	c	66		*Bermuda grass	Cynodon dactylon	5 / 1	32
0.69				Jct. Ranch Road; jog left on it and take trail to Trans Preserve Trail
0.70	r			Sign: "To Trans Preserve Trail 0.3 mi (ahead)"
0.73	r	67		elk thistle	Cirsium scariosum	1 / 1	12
0.79				Jct. Trans Preserve Trail; end this guide

http://tchester.org/srp/plants/guides/s_lomas.html
Updated 23 April 2006.