FLOWERING PLANTS OF PLACERITA CANYON, SAN GABRIEL MTS
Photographs by Michael Charters




Placerita Canyon Natural Area is a lovely woodsy habitat a short way off the 14 freeway in the western portion of the San Gabriel Mountains. It is in a transition zone between the San Gabriel Mountains and the Mojave Desert. This east-west trending canyon contains a number of trails including the main Canyon Trail which extends two miles from the Nature Center to the picnic area at Walker Ranch and beyond to a small waterfall. There are also a couple of trails that lead up the ridges to the south of the main canyon. The Canyon Trail is mostly level, much of it shaded, and it follows seasonal Placerita Creek along its oak, willow and sycamore-lined course. The property was the site of the first documented discovery of gold in California and was sold by the Walker family to the State in 1950. The Nature Center is open Tue-Sun 9-5 but the park itself is open every day from sunrise to sunset. Unlike my other photo galleries, this one includes pictures taken throughout the year, and in previous years. My visits to Placerita Canyon were on 2/15/03, 6/6/05, 4/8/06, 4/12/14, 3/9/15, 3/11/15, 3/14/15, 3/21/15, 3/28/15 and 4/9/15. I have relied on my own plant list, the Flora of Placerita Canyon Natural Area compiled primarily by Ian Swift, Mickey Long and Daryl Koutnik, 10 July 2001, and the list of species vouchered from there on the website of the Consortium of California Herbaria. The list compiled by Long and Koutnik states: "This list includes all vascular plant species documented in the park." Some species are only identified to species level.

I wish I could say that all of the photos displayed here were actually taken in Placerita Canyon but that is not the case since many of these taxa are not ones that I have seen there. Non-native taxa are indicated by an asterisk next to the common name. See at bottom for Notes indicated by superscript numbers.


Currently being worked on



Acmispon
 
Spanish clover
Acmispon americanus var. americanus
Fabaceae
(Pea family)
May-October
 
 
Short-winged deerweed
Acmispon glaber var. brevialatus
Fabaceae
(Pea family)
March-August
 
Large-flowered lotus
Acmispon grandiflorus var. grandiflorus
Fabaceae
(Pea family)
April-July
 
 
Coastal lotus
Acmispon maritimus var. maritimus
Fabaceae
(Pea family)
March-June
 
Small-flowered lotus
Acmispon micranthus
Fabaceae
(Pea family)
March-June
 
 
Strigose lotus
Acmispon strigosus
Fabaceae
(Pea family)
March-June

Acourtia
 
Sacapellote, Perezia
Acourtia microcephala
Asteraceae
(Sunflower family)
June-August

Agoseris
   
Spearleaf mountain dandelion
Agoseris retrorsa
Asteraceae
(Sunflower family)
May-August

Alnus
 
White alder
Alnus rhombifolia
Betulaceae
(Birch family)
January-April

Ambrosia
 
Annual bur-sage
Ambrosia acanthicarpa
Asteraceae
(Sunflower family)
August-November
 
 
Western ragweed
Ambrosia psilostachya
Asteraceae
(Sunflower family)
July-November


Amsinckia
 
Small-flowered fiddleneck
Amsinckia menziesii
Boraginaceae
(Borage family)
April-June
 
 
Common fiddleneck
Amsinckia intermedia
Boraginaceae
(Borage family)
March-June

Apiastrum
 
Wild celery
Apastrum angustifolium
Apiaceae
(Grass family)
March-April

Antirrhinum
 
Twining snapdragon
Antirrhinum kelloggii
Plantaginaceae
(Plantain family)
March-May
 
 
White snapdragon
Antirrhinum coulterianum
Plantaginaceae
(Plantain family)
April-July
 
Violet snapdragon
Antirrhinum nuttallianum ssp. nuttallianum
Plantaginaceae
(Plantain family)
March-July
 
 
Rose snapdragon
Antirrhinum multiflorum
Plantaginaceae
(Plantain family)
May-July

Arctostaphylos
 
Big-berry manzanita
Arctostaphylos glauca
Ericaceae
(Heath family)
December-March
 
 
Transverse Range manzanita
Arctostaphylos glandulosa ssp. mollis
Ericaceae
(Heath family)
January-April

Artemisia
 
Parish's sagebrush
Artemisia tridentata ssp. parishii
Asteraceae
(Sunflower family)
October-November
 
 
California sagebrush
Artemisia californica
Asteraceae
(Sunflower family)
August-December
 
Mugwort
Artemisia douglasiana
Asteraceae
(Sunflower family)
June-October
 
 
Wild tarragon
Artemisia dracunculus
Asteraceae
(Sunflower family)
August-October

Asclepias
 
California milkweed
Asclepias californica
Apocynaceae
(Dogbane family)
April-July
 
 
Narrow-leaved milkweed
Asclepias fascicularis
Apocynaceae
(Dogbane family)
June-August

Astragalus
 
Santa Barbara milkvetch
Astragalus trichopodus var. phoxus
Fabaceae
(Pea family)
February-June

Atriplex
     
Quailbush, Big saltbush
Atriplex lentiformis
Chenopodiaceae
(Goosefoot family)
August-October
  Australian saltbush *
Atriplex semibaccata
Chenopodiaceae
(Goosefoot family)
April-December

Baccharis
 
Mulefat (L: female flowers; R: male flowers)
Baccharis salicifolia ssp. salicifolia
Asteraceae (Sunflower family)
April-October
 
 
Coyote brush (L: male flowers; R: female flowers)
Baccharis pilularis ssp. consanguinea
Asteraceae
(Sunflower family)
August-December

Boykinia
 
Round-leaved boykinia
Boykinia rotundifolia
Saxifragaceae
(Saxifrage family)
June-July

Brassica
 
Black mustard *
Brassica nigra
Brassicaceae
(Mustard)
April-September


Brickellia
 
California brickellbush
Brickellia californica
Asteraceae
(Sunflower family)
August-October
 
 
Nevin's brickellbush
Brickellia nevinii
Asteraceae
(Sunflower family)
September-November

Calystegia
     
Southern California morning glory5
Calystegia macrostegia ssp. arida
Convolvulaceae
(Morning glory family)
May-June
  Peirson's morning glory
Calystegia peirsonii
Convolvulaceae
(Morning glory family)
May-June

Camissoniopsis
 
Jurupa Hills sun cup
Camissioniopsis ignota
Onagraceae
(Evening primrose family)
March-August
 
 
Sun cup
Camissoniopsis bistorta
Onagraceae
(Evening primrose family)
March-June

Capsella
 
Shepherd's purse *
Capsella bursa-pastoris
Brassicaceae
(Mustard family)
Most months

Carduus
 
Italian thistle *
Carduus pycnocephalus ssp. pycnocephalus
Asteraceae
(Sunflower family)
March-July

Castilleja
 
Martin's paintbrush
Castilleja applegatei ssp. martinii
Orobanchaceae
(Broomrape family)
May-September
 
 
Coast paintbrush
Castilleja affinis ssp. affinis
Orobanchaceae
(Broomrape family)
March-June
 
Woolly indian paintbrush
Castilleja foliolosa
Orobanchaceae (Broomrape family)
March-June
 
 
Lesser indian paintbrush
Castilleja minor ssp. spiralis
Orobanchaceae (Broomrape family)
May-September
 
Longleaf indian paintbrush
Castilleja subinclusa ssp. subinclusa
Orobanchaceae (Broomrape family)
April-July
 
 
Purple owl's clover
Castilleja exserta ssp. exserta
Orobanchaceae (Broomrape family)
March-May

Ceanothus
   
Hairy ceanothus (SHRUB)
Ceanothus oliganthus var. oliganthus
Rhamnaceae
(Buckthorn family)
February-April

Centaurea
 
Tocalote *
Centaurea melitensis
Asteraceae
(Sunflower family)
May-June

Cerastium
 
Mouse-ear chickweed *
Cerastium glomeratum
Caryophyllaceae
(Pink family)
February-May

Chaenactis
 
White pincushion
Chaenactis artemisiifolia
Asteraceae
(Sunflower family)
April-July
 
 
Yellow pincushion
Chaenactis glabriuscula var. glabriuscula
Asteraceae
(Sunflower family)
March-June

Chenopodium
 
California goosefoot
Chenopodium californicum
Chenopodiaceae (Goosefoot family)
March-June
 
 
Lamb's quarters *
Chenopodium album
Chenopodiaceae
(Goosefoot family)
June-October
 
Nettleleaf goosefoot *
Chenopodium murale
Chenopodiaceae
(Goosefoot family)
Most months
 
     


Chlorogalum
 
Soap plant
Chlorogalum pomeridianum var. pomeridianum
Agavaceae
(Agave family)
May-July

Cirsium
     
California thistle
Cirsium occidentale var. californicum
Asteraceae
(Sunflower family)
April-July
  Cobweb thistle
Cirsium occidentale var. occidentale
Asteraceae
(Sunflower family)
April-July

Claytonia
 
Miner's lettuce
Claytonia perfoliata
Montiaceae
(Montia family)
January-May

Convolvulus
 
Bindweed *
Convolvulus arvensis
Convolvulaceae

May-October

Corethrogyne
 
California-aster
Corethrogyne filaginifolia
Asteraceae
(Sunflower)
June-December

Crassula
 
Pygmyweed
Crassula connata
Crassulaceae
(Stonecrop family)
February-May

Croton
 
Doveweed
Croton setiger
Euphorbiaceae
(Spurge family)
May-October

Cryptantha
 
Large-flowered cryptantha
Cryptantha intermedia var. intermedia
Boraginaceae
(Borage family)
March-July
 
 
Showy prickly-nut cryptantha
Cryptantha muricata var. muricata
Boraginaceae
(Borage family)
March-July

Cucurbita
 
Calabazilla, Stinking gourd
Cucurbita foetidissima
Cucurbitaceae
(Gourd family)
June-August

Cuscuta
 
California dodder6
Cuscuta californica
Convolvulaceae

May-August

Datisca
 
Durango root
Datisca glomerata
Datiscaceae
(Datisca family)
May-July

Deinandra
 
Slender tarplant
Deinandra fasciculata
Asteraceae
(Sunflower family)
May-September

Delphinium
 
Spreading larkspur
Delphinium patens ssp. hepaticoideum
Ranunculaceae
(Buttercup family)
April-May
 
 
Scarlet larkspur
Delphinium cardinale
Ranunculaceae
(Buttercup family)
May-July

Dichelostemma
 
Blue dicks
Dichelostemma capitatum ssp. capitatum
Themidaceae
(Brodiaea family)
March-May

Dudleya
 
Chalk dudleya
Dudleya pulverulenta
Crassulaceae
(Stonecrop family)
May-July
 
 
Lanceleaf dudleya
Dudleya lanceolata
Crassulaceae
(Stonecrop family)
May-July
 
Canyon dudleya7
Dudleya cymosa
Crassulaceae
(Stonecrop family)
May-July
 
     


Dysphania
     
Mexican-tea
Dysphania ambrosioides
Chenopodiaceae
(Goosefoot family)
june-October
  Jerusalem-oak goosefoot *
Dysphania botrys
Chenopodiaceae
(Goosefoot family)
June-October

Emmenanthe
 
Whispering bells
Emmenanthe penduliflora var. penduliflora
Boraginaceae
(Borage)
April-July

Ericameria
     
Pine goldenbush
Ericameria pinifolia
Asteraceae
(Sunflower family)
April-July, September-January
  Palmer's goldenbush
Ericameria palmeri var. pachylepis
Asteraceae
(Sunflower family)
August-December
 
Parish's goldenbush
Ericameria parishii var. parishii
Asteraceae
(Sunflower family)
July-October
 
 
Ghostly rubber rabbitbrush1
Ericameria nauseosa
Asteraceae
(Sunflower family)
September-November

Erigeron
     
Leafy daisy
Erigeron foliosus var. foliosus
Asteraceae
(Sunflower family)
May-July
  Tall horseweed
Erigeron canadensis
Asteraceae
(Sunflower family)
June-September

Eriodictyon
     
Thickleaf yerba santa3
Eriodictyon crassifolium
Boraginaceae
(Borage family)
April-June
  Smoothleaf yerba santa4
Eriodictyon trichocalyx var. trichocalyx
Boraginaceae
(Borage family)
May-August

Eriogonum
 
California wild buckwheat
Eriogonum fasciculatum var. polifolium
Polygonaceae
(Buckwheat family)
April-November
 
 
Longstem buckwheat
Eriogonum elongatum var. elongatum
Polygonaceae
(Buckwheat family)
August-November

Eriophyllum
 
Golden yarrow
Eriophyllum confertiflorum var. confertiflorum
Asteraceae
(Sunflower family)
March-August

Erodium
     
Long-beaked storksbill *
Erodium botrys
Geraniaceae
(Geranium family)
March-May
  Red-stem filaree *
Erodium cicutarium
Geraniaceae
(Geranium family)
February-May
 
White-stem filaree *
Erodium moschatum
Geraniaceae
(Geranium family)
February-May
 
     


Erysimum
 
Western wallflower
Erysimum capitatum var. capitatum
Brassicaceae
(Mustard family)
March-July

Eschscholzia
   
Tufted poppy, Collarless California poppy
Eschscholzia caespitosa
Papaveraceae
(Poppy family)
March-June

Eucrypta
 
Common eucrypta
Eucrypta chrysanthemifolia var. chrysanthemifolia
Boraginaceae
(Borage family)
March-June)

Euphorbia
 
Rattlesnake weed
Euphorbia albomarginate
Euphorbiaceae
(Spurge family)
April-November

Fraxinus
   
California ash
Fraxinus dipetala
Oleaceae
(Olive family)
March-June
V
Gilia
 
Chaparral gilia
Gilia angelensis
Polemoniaceae
(Phlox family)
March-May
 
 
Globe gilia
Gilia capitata ssp. abrotanifolia
Polemoniaceae
(Phlox family)
April-July

Glycyrrhiza
 
Wild licorice
Glycyrrhiza lepidota
Fabaceae
(Pea family)
May-July

Gutierrezia
 
Broom snakeweed
Gutierrezia sarothrae
Asteraceae
(Sunflower family)
May-October

Hazardia
 
Sawtooth goldenbush
Hazardia squarrosa var. grindelioides
Asteraceae
(Sunflower family)
July-October

Helianthemum
 
Peak rush-rose
Helianthemum scoparium
Cistaceae
(Rock-rose family)
March-July

Helianthus
 
Slender-leaved sunflower
Helianthus gracilentus
Asteraceae
(Sunflower family)
May-October
 
 
Common sunflower
Helianthus annuus
Asteraceae
(Sunflower family)
February-October

Heterotheca
 
Telegraph weed10
Heterotheca grandiflora
Asteraceae
(Sunflower family)
Most months

Hirschfeldia
 
Shortpod mustard *
Hirschfeldia incana
Brassicaceae
(Mustard family)
May-October

Hypochaeris
 
Smooth cat's ear *
Hypochaeris glabra
Asteraceae
(Sunflower family)
March-June

Lactuca
 
Prickly lettuce *
Lactuca serriola
Asteraceae
(Sunflower family)
May-September

Lasthenia
   
Goldfields
Lasthenia gracilis
Asteraceae
(Sunflower family)
February-June

Lathyrus
 
Canyon sweet pea
Lathyrus vestitus var. vestitus
Fabaceae
(Pea family)
April-June

Layia
 
Yellow tidy tips
Layia platyglossa
Asteraceae
(Sunflower family)
March-May

Lepidium
 
Shiny peppergrass
Lepidium nitidum
Brassicaceae
(Mustard family)
February-May

Lepidospartum
 
Scalebroom
Lepidospartum squamatum
Asteraceae
(Sunflower family)
August-October

Lithophragma
   
Hillside woodland star
Lithophragma heterophyllum
Saxifragaceae
(Saxifrage family)
April-June

Logfia
 
California filago
Logfia filaginoides
Asteraceae
(Sunflower family)
March-June

Lomatium
 
Woolly lomatium
Lomatium dasycarpum ssp. dasycarpum
Apiaceae
(Carrot family)
March-June
 
 
Shiny lomatium
Lomatium lucidum
Apiaceae
(Carrot family)
January-April
 
Hog fennel
Lomatium utriculatum
Apiaceae
(Carrot family)
March-April
 
     


Lamium
 
Henbit*
Lamium amplexicaule
Lamiaceae
(Mint family)
April-September

Lonicera
     
Southern honeysuckle
Lonicera subspicata var. denudata
Caprifoliaceae
(Honeysuckle family)
April-June
  Chaparral honeysuckle
Lonicera interrupta
Caprifoliaceae
(Honeysuckle family)
May-Jult

Lotus
 
Bird's-foot trefoil *
Lotus corniculatus
Fabaceae
(Pea family)
June-September

Lupinus
     
Miniature lupine
Lupinus bicolor
Fabaceae
(Pea family)
March-June
  Bajada lupine
Lupinus concinnus
Fabaceae
(Pea family)
March-May
 
Summer lu;pine
Lupinus formosus var. formosus
Fabaceae
(Pea family)
April-August
 
 
Stinging lupine
Lupinus hirsutissimus
Fabaceae
(Pea family)
March-May
 
Broad-leaved lupine8
Lupinus latifolius
Fabaceae
(Pea family)
April-July
 
 
White-whorled lupine
Lupinus microcarpus var. densiflorus
Fabaceae
(Pea family)
April-May
 
Arroyo lupine
Lupinus succulentus
Fabaceae
(Pea family)
February-May
 
 
Collar lupine
Lupinus truncatus
Fabaceae
(Pea family)
March-May

Madia
 
Sticky madia
Madia gracilis
Asteraceae
(Sunflower family)
April-August

Malacothrix
 
Short-leaved cliff aster
Malacothrix saxatilis var. tenuifolia
Asteraceae
(Sunflower family)
March-September

Marah
 
Wild cucumber
Marah macrocarpa
Cucurbutaceae
(Gourd family)
January-April

Marrubium
 
Horehound *
Marrubium vulgare
Lamiaceae
(Mint family)
March-November

Matricaria
 
Pineapple weed *
Matricaria discoidea
Asteraceae
(Sunflower family)
May-August

Medicago
     
California bur-clover *
Medicago polymorpha
Fabaceae
(Pea family)
March-June
  Alfalfa *
Medicago sativa
Fabaceae
(Pea family)
April-October

Melilotus
     
White sweetclover *
Melilotus albus
Fabaceae
(Pea family)
May-September
  Sourclover *
Melilotus indicus
Fabaceae
(Pea family)
April-October

Mentzelia
 
Stickleaf
Mentzelia micrantha
Lamiaceae
(Mint family)
April-May

Micranthes
 
California saxifrage
Micranthes californica
Saxifragaceae
(Saxifrage family)
February-June

Micropus
 
Slender cottonweed
Micropus californicus var. californicus
Asteraceae
(Sunflower family)
May-June

Minuartia
 
Douglas' stitchwort
Minuartia douglasii
Caryophyllaceae
(Pink family)
April-June

Monardella
 
Mustang mint
Monardella breweri ssp. lanceolata
Lamiaceae
(Mint family)
May-October

Nemophila
 
Baby blue eyes
Nemophila menziesii var. integrifolia
Boraginaceae
(Borage family)
January-July
 
 
Meadow nemophila
Nemophila pedunculata
Boraginaceae
(Borage family)
April-August

Opuntia
 
Coast prickly-pear
Opuntia littoralis
Cactaceae
(Cactus family)
May-June

Osmorhiza
 
Sweet-cicely
Osmorhiza brachypoda
Apiaceae
(Carrot family)
March-May

Paeonia
 
Wild peony
Paeonia californica
Paeoniaceae
(Peony family)
January-March

Pectocarya
 
Winged pectocarya
Pectocarya penicillata
Boraginaceae
(Borage family)
March-May

Phacelia
 
Common phacelia
Phacelia distans
Boraginaceae
(Borage family)
March-June
 
 
Imbricate phacelia
Phacelia imbricata ssp. patula
Boraginaceae
(Borage family)
April-June

Phoradendron
 
Big-leaf mistletoe
Phoradendron leucarpum ssp. macrophyllum
Viscaceae

Plagiobothrys
 
Rusty-haired popcorn flower
Plagiobothrys nothofulvus
Boraginaceae
(Borage family)
March-May

Pseudognaphalium
     
Two-tone everlasting
Pseudognaphalium biolettii
Asteraceae
(Sunflower family)
January-May
  California everlasting
Pseudognaphalium californicum
Asteraceae
(Sunflower family)
January-July
 
Feltleaf everlasting
Pseudognaphalium microcephalum
Asteraceae
(Sunflower family)
July-October
 
 
Weedy cudweed *
Pseudognaphalium luteoalbum
Asteraceae
(Sunflower family)
Most months

Quercus
 
Coast live oak
Quercus agrifolia var. agrifolia
Fagaceae
(Oak family)
March-April
 
 
Canyon live oak
Quercus chrysolepis
Fagaceae
(Oak family)
April-May

Rafinesquia
 
California chicory
Rafinesquia californica
Asteraceae
(Sunflower family)
April-July

Raphanus
 
Wild radish *
Raphanus sativus
Brassicaceae
(Mustard family)
February-July

Rhus
 
Skunkbush
Rhus aromatica
Anacardiaceae
(Sumac family)
March-April
 
 
Sugar bush
Rhus ovata
Anacardiaceae
(Sumac family)
Mar-May

Ribes
 
Chaparral currant
Ribes malvaceum var. viridifolium
Grossulariaceae
(Gooseberry family)
January-May
 
 
Golden currant
Ribes aureum var. gracillimum
Grossulariaceae
(Gooseberry family)
February-April
 
Sierra gooseberry9
Ribes roezlii var. roezlii
Grossulariaceae
(Gooseberry family)
May-June
 
     


Robinia
 
Black locust *
Robinia pseudoacacia
Fabaceae
(Pea family)
May-June

Rubus
 
California blackberry
Rubus ursinus
Rosaceae
(Rose family)
March-July

Salix
 
Arroyo willow
Salix lasiolepis
Salicaceae
(Willow family)
February-April
 
 
Sandbar willow
Salix exigua
Salicaceae
(Willow family)
March-June
 
Red willow
Salix laevigata
Salicaceae
(Willow family)
March-May
 
     


Salsola
 
Russian thistle *
Salsola tragus
Chenopodiaceae
(Goosefoot family)
July-October

Salvia
 
Chia
Salvia columbariae
Lamiaceae
(Mint family)
March-June
 
 
White sage
Salvia apiana
Lamiaceae
(Mint family)
April-July
 
Black sage
Salvia mellifera
Lamiaceae
(Mint)
April-July
 
 
Purple sage
Salvia leucophylla
Lamiaceae
(Mint family)
May-July

Sambucus
 
Mexican elderberry
Sambucus nigra ssp. caerulea
Adoxaceae
(Muskroot)
March-April

Sanicula
 
Pacific sanicle
Sanicula crassicaulis
Apiaceae
(Carrot family)
March-May
 
 
Snakeroot, Sharp-toothed sanicle, Turkey pea
Sanicula arguta
Apiaceae
(Carrot family)
March-April

Scutellaria
 
Common skullcap
Scutellaria tuberosa
Lamiaceae

April-May

Senecio
     
California groundsel
Senecio californicus
Asteraceae
(Sunflower family)
March-May
  Bush senecio
Senecio flaccidus var. douglasii
Asteraceae
(Sunflower family)
June-October
 
Common groundsel *
Senecio vulgaris
Asteraceae
(Sunflower family)
Most months
 
     


Silene
     
Mexican pink
Silene laciniata ssp. laciniata
Caryophyllaceae
(Pink family)
May-July
  Windmill pink *
Silene gallica
Caryophyllaceae
(Pink family)
February-June

Sisymbrium
     
Tumble mustard *
Sisymbrium altissimum
Brassicaceae
(Mustard family)
May-July
  Hedge mustard *
Sisymbrium officinale
Brassicaceae
(Mustard family)
April-July
 
Oriental mustard *
Sisymbrium orientale
Brassicaceae
(Mustard family)
April-July
 
     


Solidago
 
California goldenrod
Solidago velutina ssp. californica
Asteraceae
(Sunflower family)
July-October

Sonchus
 
Sow-thistle *11
Sonchus oleraceus
Asteraceae
(Sunflower family)
Most months

Spartium
 
Spanish broom *
Spartium junceum
Fabaceae
(Pea family)
April-June

Stachys
 
White hedge-nettle
Stachys albens
Lamiaceae
(Mint family)
May-October

Stellaria
 
Chickweed *
Stellaria media
Caryophyllaceae
(Pink family)
February-September

Stephanomeria
     
Chicory-leaved stephanomeria
Stephanomeria cichoriacea
Asteraceae
(Sunflower family)
August-October
  Twiggy wreathplant2
Stephanomeria virgata ssp. virgata
Asteraceae
(Sunflower family)
July-October

Streptanthella
 

Longbeak streptanthella
Streptanthella longirostris
Brassicaceae
(Mustard family)
March-May

Symphoricarpos
     
Creeping snowberry
Symphoricarpos mollis
Caprifoliaceae
(Honeysuckle family)
April-June
  White snowberry
Symphoricarpos albus var. laevigatus
Caprifoliaceae
(Honeysuckle family)
May-September

Symphyotrichum
 
Greata's aster
Symphyotrichum greatae
Asteraceae
(Sunflower family)
August-October

Taraxacum
 
Dandelion *
Taraxacum officinale
Asteraceae
(Sunflower family)
Most months

Tragopogon
 
Yellow salsify *
Tragopogon dubius
Asteraceae
(Sunflower family)
May-July

Trifolium
 
Foothill clover12
Trifolium ciliolatum
Fabaceae
(Pea family)
March-June

Tropidocarpum
 
Dobie pod
Tropidocarpum gracile
Brassicaceae
(Mustard family)
March-May

Tauschia
 
Southern tauschia
Tauschia arguta
Apiaceae
(Carrot family)
April-June

Thysanocarpus
 
Fringe-pod
Thysanocarpus curvipes
Brassicaceae
(Mustard family)
March-May
 
 
Lace-pod
Thysanocarpus laciniatus
Brassicaceae
(Mustard family)
March-May

Trichostema
     
Woolly blue curls
Trichostema lanatum
Lamiaceae
(Mint family)
May-August
  Vinegar weed
Trichostema lanceolatum
Lamiaceae
(Mint family)
August-October

Uropappus
 
Silver puffs
Uropappus lindleyi
Asteraceae
(Sunflower family)
April-June

Xanthium
 
Cocklebur
Xanthium strumarium
Asteraceae
(Sunflower family)
July-October


NOTES:

1. Var. hololeuca is the only one that has been vouchered for Placerita Canyon, but I have not seen Ericameria nauseosa there. yet
2. I have not personally verified that the Stephanomeria virgata at Placerita Canyon is ssp. virgata and not everyone agrees that the subspecies are even valid. I have never seen it there, but this is what is on Mickey Long's plant list.
3. I'm not sure of the variety of this species. The two varieties occupy large overlapping ranges.
4. The Jepson Manual says that the stem of var. lanatum is sparse- to dense-long-wavy-hairy, while that of var. trichocalyx is glabrous to sparse-short-hairy. Neither description seems to fit the stem in the picture above, but the range makes it var. trichocalyx.
5. The subspecies indicated here is a tentative one. I more or less go along with Tom Chester's analysis that ssp. arida, ssp. intermedia and ssp. tenuifolia should all be considered as a single taxa. See his analysis here.
6. Variety undetermined.
7. Variety undetermined. Picture displayed is of ssp. cymosa, not photographed at Placerita.
8. Variety undetermined. Picture displayed is of var. latifolius.
9. Mickey's list also includes R. speciosum and R. californicum var. hesperium as taxa that were on previous unvouchered lists not vouchered or documented in the park at this time.
10. Mickey's list also includes H. villosa as a taxon that was on previous unvouchered lists not vouchered or documented in the park at this time.
11. Mickey's list also includes S. asper ssp. asper as a taxon that was on previous unvouchered lists not vouchered or documented in the park at this time.
12. Mickey's list also includes T. willdenovii as a taxon that was on previous unvouchered lists not vouchered or documented in the park at this time.


Willywonka
 
 


Willywonka
   
 


Willywonka
     
     


 
 
 
     



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