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

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)

http://tchester.org/srp/plants/guides/s_tp.html
Updated 4 March 2006.