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.


Currently being worked on



Acmispon
 
Strigose lotus
Acmispon strigosus
Fabaceae
(Pea family)
March-June
 
 
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

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

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

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

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


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

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

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

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

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

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


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

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)
May-July
 
 
Lanceleaf dudleya
Dudleya lanceolata
Crassulaceae
(Stonecrop)
May-July

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

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

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

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

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

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

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

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

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


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

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


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

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

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

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

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
 
     


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

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

May-August


Willywonka
 
 


Willywonka
   
 


Willywonka
     
     


Copyright @ 2017 by Michael L. Charters.
The photographs contained in this website may not be reproduced without the express consent of the author.