Plant Guide to S. Trans Preserve Trail, Santa Rosa Plateau

Plant Guide to S. Trans Preserve Trail, Santa Rosa Plateau

This is a working list, about which I make no guarantees at all until I officially release it. Use at your own risk!

Introduction and Explanation of Plant Trail Guides
Introduction
Highlights of This Trail
Fieldwork Dates and Summary of List Changes With Time
The Plant Guide
Comments On Specific Species
Introduction

Highlights of This Trail

The botanical highlights of this trail are:

Number of Unique Taxa On This Trail

The following histogram gives the number of trails in my database that contain each taxon on this trail. There were 90 trails in my database when this histogram was made; 16 of those trails, including this one, are at the Santa Rosa Plateau Ecological Reserve. A number of "1" means the taxon has only been found only on this list, among all the trails in my database; numbers of "16" or smaller may indicate taxa found only in this area.

Number of Trails
Containing A Taxon Number Of Taxa
On This Trail % of Taxa
On This Trail
1 1 1%
2 1 1%
3 4 4%
4 4 4%
5 1 1%

1-5 11 10%
6-10 14 12%
11-15 13 11%
16-20 25 22%
21-25 15 13%
26-30 9 8%
31-35 6 5%
36-40 5 4%
41-45 10 9%
46-50 2 2%
51-55 4 4%
Total Taxa 114 100%

I found 1 additional species not in the above table, since it has not yet been fully identified. The unidentified ones are marked with ?, sp or ssp in the id? column in the guide, and have no entries in the #all column.
Fieldwork Dates and Summary of List Changes With Time

The following table gives the dates the trail was walked and taxa recorded. After each visit, the table gives the total number of taxa on the list and the breakdown of the taxa without positive identification. See Explanation of Plant Trail Guides to understand the symbols below.

Visit Date Visit # # taxa # "?" # "sp" # "~" # "ssp"
4/3/2002 1
4/30/2003 2 96 4 5 1 2
5/15/2003 3
12/8/2003 4 107 0 4 1 1
11/18/2004 5 108 1 3 1 1
3/16/2005 6 110 0 3 1 2
4/13/2005 7 112 0 1 0 1
7/9/2005 8 115 0 1 0 1
9/12/2005 9 117 0 1 0 1
2/23/2006 10 115 0 1 0 1

I didn't keep separate track of the changes on 5/15/03 and 12/8/03, but most of those changes came from 5/15/03. The drop in the number of taxa on 2/23/06 was due to combining the Calystegia macrostegia subspecies and dropping the "Phacelia ramosissima" seen on the trail only prior to 2005 and never fully verified.
I thank Kay Madore for her sharp eyes in helping me find interesting things on this trail on several of these trips.
The Plant Guide

Version for printing, without lines and other text on this page: html (5 pages), pdf Clickbook booklet (2 double-sided pages), or Large Type pdf Clickbook booklet (4 double-sided pages). (See printing instructions for an explanation of these options)
The mileages have been rectified to be consistent with a GPS measurement of the trail length. Typical errors should be ~0.01 - 0.02 miles.

Mile S # id? Common Name Latin Name #here #all
0.00 Beginning of guide at junction with Hidden Valley Road, heading south, toward the Vernal Pool Trail; elevation ~1885 feet (575 m).
0.00 b 1 *jointed goatgrass Aegilops cylindrica 20 / 1 4
0.00 b 2 *wild oats Avena fatua 99 / 9 26
0.00 b 3 *foxtail barley Hordeum murinum ssp. leporinum 99 / 9 14
0.00 b 4 *Italian rye-grass Lolium multiflorum 99 / 9 18
0.00 b 5 *short-fruited filaree Erodium brachycarpum 99 / 9 14
0.00 b 6 *shortpod mustard Hirschfeldia incana 50 / 9 51
0.00 b 7 graceful tarplant Holocarpha virgata ssp. elongata 99 / 9 15
0.00 r 8 vinegar weed Trichostema lanceolatum 50 / 9 15
0.00 b 9 *ripgut brome Bromus diandrus / 52
0.00 b 10 *California burclover Medicago polymorpha 99 / 9 40
0.00 b 11 *soft chess Bromus hordeaceus 99 / 9 40
0.00 r 12 *little horseweed Conyza bonariensis 1 / 1 16
0.00 r 13 *sow thistle Sonchus oleraceus 2 / 2 42
0.00 r Sign: "Trans Preserve Trail (ahead and back); To Vernal Pools 1 mi; Hidden Valley Road (left-right)"
0.00 r 14 *windmill pink Silene gallica / 33
0.00 r 15 dove weed Eremocarpus setigerus 99 / 9 25
0.00 r 16 dwarf lupine Lupinus bicolor / 29
0.00 b 17 purple needlegrass Nassella pulchra / 20
0.00 r 18 *hairy rattail fescue Vulpia myuros var. hirsuta / 19
0.00 b 19 blue-eyed grass Sisyrinchium bellum 99 / 9 19
0.00 b 20 *smooth cat's ear Hypochaeris glabra / 35
0.00 r 21 *narrowleaf filago Filago gallica / 45
0.00 l 22 purple sanicle Sanicula bipinnatifida 50 / 9 11
0.01 l 23 *prickly lettuce Lactuca serriola 2 / 2 42
0.02 r 24 pin-point clover Trifolium gracilentum var. gracilentum / 8
0.02 r 25 *scarlet pimpernel Anagallis arvensis / 33
0.03 r 26 *mouse-ear chickweed Cerastium glomeratum / 19
0.03 r 27 tawny popcorn flower Plagiobothrys fulvus / 3
r 28 California filago Filago californica / 21
0.06 Trail jags right.
0.06 r 29 checkerbloom Sidalcea malviflora ssp. sparsifolia 50 / 9 25
0.07 r 30 leafy daisy Erigeron foliosus var. foliosus 10 / 9 44
0.07 r 31 purple clarkia Clarkia purpurea ssp. quadrivulnera 99 / 9 26
0.08 b 32 *red brome Bromus madritensis ssp. rubens / 53
0.08 l (San Diego wreathplant, Stephanomeria diegensis)
0.09 Trail bends right slightly
0.09 l 33 western buttercup Ranunculus occidentalis 50 / 9 6
0.09 r 34 sharp-toothed sanicle Sanicula arguta 10 / 5 16
0.10 l 35 Engelmann oak Quercus engelmannii 10 / 9 23
0.10 l 36 southern miner's lettuce Claytonia perfoliata ssp. mexicana 50 / 5 25
0.10 Trail bends left.
0.10 l 37 common bedstraw Galium aparine 50 / 5 38
0.10 l 38 poison oak Toxicodendron diversilobum 99 / 9 43
0.10 l (wild-cucumber, Marah macrocarpus var. macrocarpus)
0.10 l 39 white-flowering currant Ribes indecorum 1 / 1 23
0.10 r 40 horseweed Conyza canadensis / 38
0.10 b 41 fragrant everlasting Gnaphalium canescens ssp. beneolens 1 / 1 23
0.10 l 42 *horehound Marrubium vulgare 1 / 1 32
0.10 l 43 *hedge parsley Torilis nodosa 20 / 5 14
0.11 r 44 slender madia Madia gracilis 10 / 3 19
0.11 b 45 splendid mariposa lily Calochortus splendens / 20
0.11 Trail begins to turn right 90°
0.11 l 46 coast live oak Quercus agrifolia var. agrifolia 10 / 9 42
0.11 r 47 blue dicks Dichelostemma capitatum ssp. capitatum 50 / 9 46
0.11 l 48 *bull thistle Cirsium vulgare⁺ 4 / 2 20
49 big squirreltail Elymus multisetus⁺ / 7
0.13 b 50 *winter vetch Vicia villosa ssp. varia 20 / 1 19
0.13 Local high point on trail; elevation 1960 feet (597 m)
0.13 l 51 wild-cucumber Marah macrocarpus var. macrocarpus / 44
0.13 b 52 *Darnel Lolium temulentum 40 / 9 4
0.13 l 53 California brome Bromus carinatus var. carinatus / 24
0.13 Trail bends left 90°
0.13 l 54 ssp milk maids Cardamine californica var. californica 10 / 2 6
0.13 l 55 climbing bedstraw Galium nuttallii ssp. nuttallii 5 / 5 30
0.15 l 56 one-sided bluegrass Poa secunda ssp. secunda / 23
0.15 l Check for different clover.
0.15 r 57 *tocalote Centaurea melitensis / 45
0.15 l 58 *cut-leaved geranium Geranium dissectum 20 / 2 13
0.15 r 59 *common groundsel Senecio vulgaris 10 / 1 18
l (blue larkspur, Delphinium parryi ssp. parryi)
0.15 l 60 warty spurge Euphorbia spathulata 10 / 1 4
0.15 l 61 Spanish clover Lotus purshianus var. purshianus 20 / 2 31
0.16 l 62 grand mountain dandelion Agoseris grandiflora 1 / 1 11
0.16 l 63 soap plant Chlorogalum pomeridianum var. pomeridianum 10 / 9 19
0.16 (Check for rusty-haired popcorn flower, Plagiobothrys nothofulvus.)
0.16 l 64 Indian milkweed Asclepias eriocarpa 5 / 2 18
0.16 r (laurel sumac, Malosma laurina)
0.17 "Double trail" section, with the upper portion used when the lower portion is a mudpit
0.18 l 65 California-aster Lessingia filaginifolia var. filaginifolia 33 / 9 51
0.18 l 66 California everlasting Gnaphalium californicum / 43
0.19 l 67 johnny jump-up Viola pedunculata 30 / 5 16
0.19 r 68 red maids Calandrinia ciliata / 17
0.20 b 69 silver puffs Uropappus lindleyi⁺ / 26
0.20 b 70 brown microseris Stebbinsoseris heterocarpa / 3
0.20 l 71 fringe-pod Thysanocarpus curvipes 50 / 4 9
0.21 l 72 slender cottonweed Micropus californicus var. californicus 1 / 1 7
0.21 l 73 southern California morning-glory Calystegia macrostegia ssp. arida⁺ 2 / 2 9
0.21 l (blue elderberry, Sambucus mexicana)
0.21 74 blue larkspur Delphinium parryi ssp. parryi 5 / 3 14
0.21 l Bench with back
0.22 l 75 *rattail fescue Vulpia myuros var. myuros / 20
0.22 l (chocolate lily, Fritillaria biflora var. biflora)
0.24 l 76 June grass Koeleria macrantha 1 / 1 2
l 77 Douglas' microseris Microseris douglasii ssp. douglasii / 1
0.26 r 78 chocolate lily Fritillaria biflora var. biflora⁺ 5 / 2 5
0.27 r 79 *prickly sow thistle Sonchus asper ssp. asper 1 / 1 30
0.27 Local low point on trail; elevation ~1925 feet (585 m); trail gradually turns left 90° and begins short steep uphill.
0.28 b 80 California poppy Eschscholzia californica 2 / 1 29
0.29 l 81 bajada lupine Lupinus concinnus 10 / 2 11
0.29 l 82 small-flowered fiddleneck Amsinckia menziesii var. menziesii 10 / 1 8
0.30 l 83 Jepson's blue wildrye Elymus glaucus ssp. jepsonii⁺ 1 / 1 12
0.31 l 84 *olive Olea europaea 1 / 1 10
0.32 l First of two good patches of milk maids, Cardamine californica
0.32 b 85 California sweet-cicely Osmorhiza brachypoda 10 / 2 6
0.32 l 86 blue wildrye Elymus glaucus ssp. glaucus⁺ 5 / 2 21
0.32 b 87 goldenrod Solidago californica 10 / 2 35
0.32 b 88 sticky cinquefoil Potentilla glandulosa ssp. glandulosa 5 / 1 17
0.32 r 89 giant wild-rye Leymus condensatus 1 / 1 27
0.32 l 90 hollyleaf redberry Rhamnus ilicifolia 2 / 2 43
0.32 Trail turns right 90°
0.33 b 91 eucrypta Eucrypta chrysanthemifolia var. chrysanthemifolia 10 / 2 25
0.33 l 92 *hedge mustard Sisymbrium officinale⁺ 30 / 9 20
0.33 Cross very small drainage.
0.33 b 93 hoary bowlesia Bowlesia incana 30 / 1 3
0.33 b 94 blue elderberry Sambucus mexicana 2 / 1 48
0.33 r 95 *common chickweed Stellaria media / 25
0.33 l 96 fiesta flower Pholistoma auritum var. auritum 3 / 1 11
0.33 l Second good patch of milk maids, Cardamine californica
0.33 l 97 Pacific sanicle Sanicula crassicaulis 30 / 9 20
0.33 l 98 tree clover Trifolium ciliolatum / 12
0.34 b 99 long-spurred plectritis Plectritis ciliosa ssp. insignis 10 / 1 3
0.34 100 *wall bedstraw Galium parisiense / 7
0.34 l 101 sp tiny clover Trifolium sp. /
0.34 l 102 slender vetch Vicia hassei⁺ 5 / 2 6
0.34 r Western buttercup, Ranunculus occidentalis, with 8-9 petals, in midst of sea of plants with 5 petals
0.34 l (woodland star, Lithophragma affine)
0.34 b 103 American vetch Vicia americana var. americana 1 / 1 8
0.34 Trail curves left with a short steep uphill, then right and a gentle uphill; begin long stretch of trail with no new taxa
0.39 Local high point; trail continues to mostly ascend gently
b 104 earth brodiaea Brodiaea terrestris ssp. kernensis / 7
r (bush lupine, Lupinus excubitus var. hallii)
0.49 Trail jags left.
0.49 l 105 *white-stemmed filaree Erodium moschatum / 20
0.49 l 106 California lotus Lotus wrangelianus 5 / 1 4
0.49 l 107 tomcat clover Trifolium willdenovii / 17
0.49 (caterpillar phacelia, Phacelia cicutaria var. hispida)
0.49 Local high point; trail curves right.
0.49 Former field of fringe-pod in 1996-2001 is now a field of non-native grasses.
0.53 l 108 California bee plant Scrophularia californica ssp. floribunda 3 / 1 17
0.54 l (San Diego pea, Lathyrus vestitus var. alefeldii)
0.57 l 109 purple head Acourtia microcephala / 19
0.57 r 110 California fuchsia Epilobium canum ssp. canum / 21
0.59 Trail bends right slightly
0.59 l 111 San Diego birdsfoot lotus Lotus hamatus / 24
0.59 l 112 rattlesnake weed Daucus pusillus / 29
l 113 nodding needlegrass Nassella cernua / 17
0.67 r (broom baccharis, Baccharis sarothroides)
0.68 Trail turns left 90°
0.70 b 114 San Diego wreathplant Stephanomeria diegensis 2 / 1 23
0.75 r 115 western ragweed Ambrosia psilostachya 10 / 1 38
0.78 End trail at junction with Vernal Pool Trail; elevation 2060 feet (628 m)

Comments On Specific Species

Calystegia macrostegia ssp. arida. About half the plants at the SRP appear to be ssp. arida, with the other half split between sspp. "intermedia" and "tenuifolia". It has long troubled me to be finding three subspecies in the small area of the SRP. Worse, the classification of a given plant has changed with time, which was extremely puzzling.
These difficulties were resolved when I found clear evidence that subspecies "intermedia" and "tenuifolia" are bogus. Hence I assign all the SRP plants to ssp. arida.
Cirsium vulgare. The plants found here in 2005 were weeded out.
Elymus multisetus, Uropappus lindleyi, Sisymbrium officinale and Koeleria macrantha. The location is uncertain for these taxa to within a few hundredths of a mile, so the order is not necessarily correct. The Elymus multisetus may have died in the 2001-2002 drought, since it has not been seen since then.
Fritillaria biflora var. biflora. There are many more plants off-trail, nearly all below the trail.
Elymus glaucus. Both subspecies appear to be present. The first specimen had a hairy sheath on 5/15/03, but two other plants sampled on different trips had glabrous sheaths.
Vicia hassei. The plants here were only single flowered, so could not be distinguished from V. ludoviciana. However, a short distance farther along the trail were plants with two widely-separated flowers, giving this id.

Number of Trails Containing A Taxon	Number Of Taxa On This Trail	% of Taxa On This Trail
1	1	1%
2	1	1%
3	4	4%
4	4	4%
5	1	1%

1-5	11	10%
6-10	14	12%
11-15	13	11%
16-20	25	22%
21-25	15	13%
26-30	9	8%
31-35	6	5%
36-40	5	4%
41-45	10	9%
46-50	2	2%
51-55	4	4%
Total Taxa	114	100%

Visit Date	Visit #	# taxa	# "?"	# "sp"	# "~"	# "ssp"
4/3/2002	1
4/30/2003	2	96	4	5	1	2
5/15/2003	3
12/8/2003	4	107	0	4	1	1
11/18/2004	5	108	1	3	1	1
3/16/2005	6	110	0	3	1	2
4/13/2005	7	112	0	1	0	1
7/9/2005	8	115	0	1	0	1
9/12/2005	9	117	0	1	0	1
2/23/2006	10	115	0	1	0	1

Mile	S	#	id?	Common Name	Latin Name	#here	#all
0.00				Beginning of guide at junction with Hidden Valley Road, heading south, toward the Vernal Pool Trail; elevation ~1885 feet (575 m).
0.00	b	1		*jointed goatgrass	Aegilops cylindrica	20 / 1	4
0.00	b	2		*wild oats	Avena fatua	99 / 9	26
0.00	b	3		*foxtail barley	Hordeum murinum ssp. leporinum	99 / 9	14
0.00	b	4		*Italian rye-grass	Lolium multiflorum	99 / 9	18
0.00	b	5		*short-fruited filaree	Erodium brachycarpum	99 / 9	14
0.00	b	6		*shortpod mustard	Hirschfeldia incana	50 / 9	51
0.00	b	7		graceful tarplant	Holocarpha virgata ssp. elongata	99 / 9	15
0.00	r	8		vinegar weed	Trichostema lanceolatum	50 / 9	15
0.00	b	9		*ripgut brome	Bromus diandrus	/	52
0.00	b	10		*California burclover	Medicago polymorpha	99 / 9	40
0.00	b	11		*soft chess	Bromus hordeaceus	99 / 9	40
0.00	r	12		*little horseweed	Conyza bonariensis	1 / 1	16
0.00	r	13		*sow thistle	Sonchus oleraceus	2 / 2	42
0.00	r			Sign: "Trans Preserve Trail (ahead and back); To Vernal Pools 1 mi; Hidden Valley Road (left-right)"
0.00	r	14		*windmill pink	Silene gallica	/	33
0.00	r	15		dove weed	Eremocarpus setigerus	99 / 9	25
0.00	r	16		dwarf lupine	Lupinus bicolor	/	29
0.00	b	17		purple needlegrass	Nassella pulchra	/	20
0.00	r	18		*hairy rattail fescue	Vulpia myuros var. hirsuta	/	19
0.00	b	19		blue-eyed grass	Sisyrinchium bellum	99 / 9	19
0.00	b	20		*smooth cat's ear	Hypochaeris glabra	/	35
0.00	r	21		*narrowleaf filago	Filago gallica	/	45
0.00	l	22		purple sanicle	Sanicula bipinnatifida	50 / 9	11
0.01	l	23		*prickly lettuce	Lactuca serriola	2 / 2	42
0.02	r	24		pin-point clover	Trifolium gracilentum var. gracilentum	/	8
0.02	r	25		*scarlet pimpernel	Anagallis arvensis	/	33
0.03	r	26		*mouse-ear chickweed	Cerastium glomeratum	/	19
0.03	r	27		tawny popcorn flower	Plagiobothrys fulvus	/	3
	r	28		California filago	Filago californica	/	21
0.06				Trail jags right.
0.06	r	29		checkerbloom	Sidalcea malviflora ssp. sparsifolia	50 / 9	25
0.07	r	30		leafy daisy	Erigeron foliosus var. foliosus	10 / 9	44
0.07	r	31		purple clarkia	Clarkia purpurea ssp. quadrivulnera	99 / 9	26
0.08	b	32		*red brome	Bromus madritensis ssp. rubens	/	53
0.08	l			(San Diego wreathplant, Stephanomeria diegensis)
0.09				Trail bends right slightly
0.09	l	33		western buttercup	Ranunculus occidentalis	50 / 9	6
0.09	r	34		sharp-toothed sanicle	Sanicula arguta	10 / 5	16
0.10	l	35		Engelmann oak	Quercus engelmannii	10 / 9	23
0.10	l	36		southern miner's lettuce	Claytonia perfoliata ssp. mexicana	50 / 5	25
0.10				Trail bends left.
0.10	l	37		common bedstraw	Galium aparine	50 / 5	38
0.10	l	38		poison oak	Toxicodendron diversilobum	99 / 9	43
0.10	l			(wild-cucumber, Marah macrocarpus var. macrocarpus)
0.10	l	39		white-flowering currant	Ribes indecorum	1 / 1	23
0.10	r	40		horseweed	Conyza canadensis	/	38
0.10	b	41		fragrant everlasting	Gnaphalium canescens ssp. beneolens	1 / 1	23
0.10	l	42		*horehound	Marrubium vulgare	1 / 1	32
0.10	l	43		*hedge parsley	Torilis nodosa	20 / 5	14
0.11	r	44		slender madia	Madia gracilis	10 / 3	19
0.11	b	45		splendid mariposa lily	Calochortus splendens	/	20
0.11				Trail begins to turn right 90°
0.11	l	46		coast live oak	Quercus agrifolia var. agrifolia	10 / 9	42
0.11	r	47		blue dicks	Dichelostemma capitatum ssp. capitatum	50 / 9	46
0.11	l	48		*bull thistle	Cirsium vulgare⁺	4 / 2	20
		49		big squirreltail	Elymus multisetus⁺	/	7
0.13	b	50		*winter vetch	Vicia villosa ssp. varia	20 / 1	19
0.13				Local high point on trail; elevation 1960 feet (597 m)
0.13	l	51		wild-cucumber	Marah macrocarpus var. macrocarpus	/	44
0.13	b	52		*Darnel	Lolium temulentum	40 / 9	4
0.13	l	53		California brome	Bromus carinatus var. carinatus	/	24
0.13				Trail bends left 90°
0.13	l	54	ssp	milk maids	Cardamine californica var. californica	10 / 2	6
0.13	l	55		climbing bedstraw	Galium nuttallii ssp. nuttallii	5 / 5	30
0.15	l	56		one-sided bluegrass	Poa secunda ssp. secunda	/	23
0.15	l			Check for different clover.
0.15	r	57		*tocalote	Centaurea melitensis	/	45
0.15	l	58		*cut-leaved geranium	Geranium dissectum	20 / 2	13
0.15	r	59		*common groundsel	Senecio vulgaris	10 / 1	18
	l			(blue larkspur, Delphinium parryi ssp. parryi)
0.15	l	60		warty spurge	Euphorbia spathulata	10 / 1	4
0.15	l	61		Spanish clover	Lotus purshianus var. purshianus	20 / 2	31
0.16	l	62		grand mountain dandelion	Agoseris grandiflora	1 / 1	11
0.16	l	63		soap plant	Chlorogalum pomeridianum var. pomeridianum	10 / 9	19
0.16				(Check for rusty-haired popcorn flower, Plagiobothrys nothofulvus.)
0.16	l	64		Indian milkweed	Asclepias eriocarpa	5 / 2	18
0.16	r			(laurel sumac, Malosma laurina)
0.17				"Double trail" section, with the upper portion used when the lower portion is a mudpit
0.18	l	65		California-aster	Lessingia filaginifolia var. filaginifolia	33 / 9	51
0.18	l	66		California everlasting	Gnaphalium californicum	/	43
0.19	l	67		johnny jump-up	Viola pedunculata	30 / 5	16
0.19	r	68		red maids	Calandrinia ciliata	/	17
0.20	b	69		silver puffs	Uropappus lindleyi⁺	/	26
0.20	b	70		brown microseris	Stebbinsoseris heterocarpa	/	3
0.20	l	71		fringe-pod	Thysanocarpus curvipes	50 / 4	9
0.21	l	72		slender cottonweed	Micropus californicus var. californicus	1 / 1	7
0.21	l	73		southern California morning-glory	Calystegia macrostegia ssp. arida⁺	2 / 2	9
0.21	l			(blue elderberry, Sambucus mexicana)
0.21		74		blue larkspur	Delphinium parryi ssp. parryi	5 / 3	14
0.21	l			Bench with back
0.22	l	75		*rattail fescue	Vulpia myuros var. myuros	/	20
0.22	l			(chocolate lily, Fritillaria biflora var. biflora)
0.24	l	76		June grass	Koeleria macrantha	1 / 1	2
	l	77		Douglas' microseris	Microseris douglasii ssp. douglasii	/	1
0.26	r	78		chocolate lily	Fritillaria biflora var. biflora⁺	5 / 2	5
0.27	r	79		*prickly sow thistle	Sonchus asper ssp. asper	1 / 1	30
0.27				Local low point on trail; elevation ~1925 feet (585 m); trail gradually turns left 90° and begins short steep uphill.
0.28	b	80		California poppy	Eschscholzia californica	2 / 1	29
0.29	l	81		bajada lupine	Lupinus concinnus	10 / 2	11
0.29	l	82		small-flowered fiddleneck	Amsinckia menziesii var. menziesii	10 / 1	8
0.30	l	83		Jepson's blue wildrye	Elymus glaucus ssp. jepsonii⁺	1 / 1	12
0.31	l	84		*olive	Olea europaea	1 / 1	10
0.32	l			First of two good patches of milk maids, Cardamine californica
0.32	b	85		California sweet-cicely	Osmorhiza brachypoda	10 / 2	6
0.32	l	86		blue wildrye	Elymus glaucus ssp. glaucus⁺	5 / 2	21
0.32	b	87		goldenrod	Solidago californica	10 / 2	35
0.32	b	88		sticky cinquefoil	Potentilla glandulosa ssp. glandulosa	5 / 1	17
0.32	r	89		giant wild-rye	Leymus condensatus	1 / 1	27
0.32	l	90		hollyleaf redberry	Rhamnus ilicifolia	2 / 2	43
0.32				Trail turns right 90°
0.33	b	91		eucrypta	Eucrypta chrysanthemifolia var. chrysanthemifolia	10 / 2	25
0.33	l	92		*hedge mustard	Sisymbrium officinale⁺	30 / 9	20
0.33				Cross very small drainage.
0.33	b	93		hoary bowlesia	Bowlesia incana	30 / 1	3
0.33	b	94		blue elderberry	Sambucus mexicana	2 / 1	48
0.33	r	95		*common chickweed	Stellaria media	/	25
0.33	l	96		fiesta flower	Pholistoma auritum var. auritum	3 / 1	11
0.33	l			Second good patch of milk maids, Cardamine californica
0.33	l	97		Pacific sanicle	Sanicula crassicaulis	30 / 9	20
0.33	l	98		tree clover	Trifolium ciliolatum	/	12
0.34	b	99		long-spurred plectritis	Plectritis ciliosa ssp. insignis	10 / 1	3
0.34		100		*wall bedstraw	Galium parisiense	/	7
0.34	l	101	sp	tiny clover	Trifolium sp.	/
0.34	l	102		slender vetch	Vicia hassei⁺	5 / 2	6
0.34	r			Western buttercup, Ranunculus occidentalis, with 8-9 petals, in midst of sea of plants with 5 petals
0.34	l			(woodland star, Lithophragma affine)
0.34	b	103		American vetch	Vicia americana var. americana	1 / 1	8
0.34				Trail curves left with a short steep uphill, then right and a gentle uphill; begin long stretch of trail with no new taxa
0.39				Local high point; trail continues to mostly ascend gently
	b	104		earth brodiaea	Brodiaea terrestris ssp. kernensis	/	7
	r			(bush lupine, Lupinus excubitus var. hallii)
0.49				Trail jags left.
0.49	l	105		*white-stemmed filaree	Erodium moschatum	/	20
0.49	l	106		California lotus	Lotus wrangelianus	5 / 1	4
0.49	l	107		tomcat clover	Trifolium willdenovii	/	17
0.49				(caterpillar phacelia, Phacelia cicutaria var. hispida)
0.49				Local high point; trail curves right.
0.49				Former field of fringe-pod in 1996-2001 is now a field of non-native grasses.
0.53	l	108		California bee plant	Scrophularia californica ssp. floribunda	3 / 1	17
0.54	l			(San Diego pea, Lathyrus vestitus var. alefeldii)
0.57	l	109		purple head	Acourtia microcephala	/	19
0.57	r	110		California fuchsia	Epilobium canum ssp. canum	/	21
0.59				Trail bends right slightly
0.59	l	111		San Diego birdsfoot lotus	Lotus hamatus	/	24
0.59	l	112		rattlesnake weed	Daucus pusillus	/	29
	l	113		nodding needlegrass	Nassella cernua	/	17
0.67	r			(broom baccharis, Baccharis sarothroides)
0.68				Trail turns left 90°
0.70	b	114		San Diego wreathplant	Stephanomeria diegensis	2 / 1	23
0.75	r	115		western ragweed	Ambrosia psilostachya	10 / 1	38
0.78				End trail at junction with Vernal Pool Trail; elevation 2060 feet (628 m)

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Plant Trail Guides For The Santa Rosa Plateau
Field Guide to the Santa Rosa Plateau: Plants

Copyright © 2003-2006 by Tom Chester.
Permission is freely granted to reproduce any or all of this page as long as credit is given to me at this source:
http://tchester.org/srp/plants/guides/s_tp.html
Comments and feedback: Tom Chester
Updated 4 March 2006.