Plant Guide to Nighthawk Loop Trail, Santa Rosa Plateau

Mile	s	#	id?	Common Name	Latin Name	#here	#all
0.00				Begin trail on east side of Sylvan Meadows Parking Area at opening in fence; elevation ~1870 feet (570 m)
0.00	l			Sign: "Nighthawk Loop Trail 0.6 mi"
0.00	b	1	ssp	*foxtail barley	Hordeum murinum	20 / 2
0.00	b	2		*soft chess	Bromus hordeaceus	99 / 9	40
0.00	l	3	sp	needlegrass	Nassella sp.	/
0.00	r	4		*ripgut brome	Bromus diandrus	10 / 2	52
0.00	b	5		*slender wild oats	Avena barbata	99 / 9	40
0.00	l	6	~	*knotweed	Polygonum arenastrum	5 / 1	19
0.00	r	7		*sand spurrey	Spergularia bocconei	5 / 1	14
0.00	r	8		Engelmann oak	Quercus engelmannii	10 / 9	23
0.00	r			Picnic Tables
0.00	l	9		rusty-haired popcorn flower	Plagiobothrys nothofulvus+	/	13
0.00	l	10	~	*short-fruited filaree	Erodium brachycarpum	99 / 9	14
0.00	l	11		*narrowleaf filago	Filago gallica	99 / 9	45
0.01				Y-Jct to begin the loop; go right
0.01	r	12	ssp	fiddleneck	Amsinckia menziesii	50 / 5
0.01	r	13		Spanish clover	Lotus purshianus var. purshianus	99 / 9	31
0.01	r	14		dove weed	Eremocarpus setigerus	50 / 9	24
0.01	b	15		rattlesnake weed	Daucus pusillus	50 / 9	29
0.01	r			(coast-range melic, Melica imperfecta)
0.01	r	16	sp	bedstraw	Galium sp.	99 / 9
0.01	r	17		checkerbloom	Sidalcea malviflora ssp. sparsifolia	50 / 9	25
0.01	r	18		dwarf lupine	Lupinus bicolor	10 / 3	29
0.02	r	19		purple clarkia	Clarkia purpurea ssp. quadrivulnera	99 / 9	26
0.02	r	20		*Australian brome	Bromus arenarius	99 / 9	3
0.02	b	21		Pomona locoweed	Astragalus pomonensis	20 / 9	11
0.02	r	22		*red brome	Bromus madritensis ssp. rubens	/	53
0.02	r	23		San Diego birdsfoot lotus	Lotus hamatus	/	24
0.03	l			(horseweed, Conyza canadensis)
0.03	r	24		Indian milkweed	Asclepias eriocarpa	30 / 9	18
0.04	l			(telegraph weed, Heterotheca grandiflora)
0.04	b	25		*prickly sow thistle	Sonchus asper ssp. asper	2 / 2	30
0.05	r	26		southern miner's lettuce	Claytonia perfoliata ssp. mexicana	99 / 9	25
0.07	b	27		*prickly lettuce	Lactuca serriola	99 / 9	42
0.07	b	28		graceful tarplant	Holocarpha virgata ssp. elongata	99 / 9	14
0.08	r	29		*smooth cat's ear	Hypochaeris glabra	99 / 9	35
0.09	b	30		western ragweed	Ambrosia psilostachya	10 / 1	37
0.09	r	31		*sow thistle	Sonchus oleraceus	/	42
0.10	r	32		*nit grass	Gastridium ventricosum	/	25
0.10	r	33		toad rush	Juncus bufonius var. bufonius	10 / 1	14
0.10	r	34		clustered toad rush	Juncus bufonius var. congestus	10 / 1	7
0.10	r	35		*curly dock	Rumex crispus	1 / 1	23
0.11	l	36		horseweed	Conyza canadensis	1 / 1	36
0.11	r			(poison oak, Toxicodendron diversilobum)
0.12	r	37		miner's lettuce	Claytonia perfoliata ssp. perfoliata	/	22
0.13	r			(yellow salsify, Tragopogon dubius)
0.15	r			nodding needlegrass	Nassella cernua+	/	17
0.16	r			(leafy daisy, Erigeron foliosus var. foliosus)
0.17	r			Vertical slabs of rock
0.19	l	38		sharp-toothed sanicle	Sanicula arguta	/	16
0.20	r	39		*redstem filaree	Erodium cicutarium	/	55
0.20	r	40		purple needlegrass	Nassella pulchra	/	20
0.21	b	41		Palmer's goldenbush	Ericameria palmeri var. pachylepis	10 / 3	10
0.22	l	42		California-aster	Lessingia filaginifolia var. filaginifolia	20 / 7	51
0.23	l	43		California squirreltail	Elymus elymoides ssp. californicus	/	9
0.24	r	44		long-stemmed buckwheat	Eriogonum elongatum var. elongatum	20 / 3	28
0.24	r			(California fuchsia, Epilobium canum ssp. canum)
0.24	r			Jct. use connector trail to Motrero Trail
0.25	l	45		*shortpod mustard	Hirschfeldia incana	20 / 5	51
0.25	r			Jct. official connector trail to Motrero Trail; trail begins long curve to left
0.29	r			Bench with back
0.29	r	46		California fuchsia	Epilobium canum ssp. canum	5 / 1	21
0.29	r	47		lanceleaf dudleya	Dudleya lanceolata	5 / 1	20
0.29				Switchback left; near low point on trail, elevation 1840 feet (561 m)
0.33	r	48		purple sanicle	Sanicula bipinnatifida	1 / 1	11
0.33	r	49		*California burclover	Medicago polymorpha	5 / 1	40
0.33	r	50		*scarlet pimpernel	Anagallis arvensis	5 / 1	33
0.33	l	51		*goldentop	Lamarckia aurea	5 / 1	22
0.36	l	52	sp	strigose lotus?	Lotus strigosus?	/
0.39	l	53		*wild oats	Avena fatua	5 / 1	26
0.40	l	54		*common chickweed	Stellaria media	20 / 1	25
0.40	l	55		*hedge parsley	Torilis nodosa	10 / 1	14
0.42	l			Bench with back
0.43	l	56		silver puffs	Uropappus lindleyi	1 / 1	26
0.44	l	57		blue wildrye	Elymus glaucus ssp. glaucus	3 / 1	21
0.44	l			(California peony, Paeonia californica)
0.46	b	58		*tocalote	Centaurea melitensis	5 / 1	45
0.46	r			(bird's-foot fern, Pellaea mucronata var. mucronata)
0.46	r	59		leafy daisy	Erigeron foliosus var. foliosus	1 / 1	44
0.46	b	60		blue dicks	Dichelostemma capitatum ssp. capitatum	/	46
0.47	r	61		branching phacelia	Phacelia ramosissima var. latifolia	2 / 2	34
0.47	l	62		goldenrod	Solidago californica	5 / 1	35
0.47	r			Bench with back; view of small waterfall in season in drainage straight ahead
0.48	r			(California bee plant, Scrophularia californica ssp. floribunda; purple head, Acourtia microcephala; basketbush, Rhus trilobata)
0.50				Cross shallow drainage
0.51	l			(fragrant everlasting, Gnaphalium canescens ssp. beneolens)
0.55				Jct. beginning of loop; end guide
0.56				Back at trailhead

http://tchester.org/srp/plants/guides/nighthawk.html
Updated 5 September 2005.