WILDFLOWERS OF
SOUTHERN CALIFORNIA
CALIFORNIA
PLANT NAMES
FIELD TRIP
PHOTO GALLERIES
EPONYM DICTIONARY OF
SOUTHERN AFRICAN PLANTS


FLORA OF THE MT. WILSON TRAIL,
SAN GABRIEL MOUNTAINS
Photographs by Michael Charters





In 2018 I decided to pursue a goal I had had for many years, and that was to select a single trail or area, and revisit it many times over the course of a single season. We had a very good rainfall event in the foothills of the San Gabriels early in the year that germinated a lot of annuals, and the cool weather extended into June which prolonged the blooming season. Since my home is only a few blocks from the base of the Mt. Wilson Trail, I decided to do that. The Mt. Wilson Trail is a terrific trail, 7.5 miles from the bottom to the top at Mt. Wilson, and with a 4500' elevational differential has tremendous diversity. Over the course of the year I compiled a list of approximately 250 species which I had observed, identified and photographed. Tom Chester provided a list he had made in 2005 for the first quarter of the trail, and some additional possibilities from a voucher search of the area, and I made about 20 visits to various sections of the trail, either beginning at the bottom in Sierra Madre, or at the top. This was in addition to the more than 30 visits I had made in previous years. So far in January 2019 I have already been on the trail three times. The trail is divided approximately into four sections, bottom to First Water, First Water to Orchard Camp, Orchard Camp to Manzanita Ridge, and Manzanita Ridge to the parking lot at the top. I plan to continue my exploration of the flora on this trail for the near future.

The Mt. Wilson Trail was originally created by Benjamin ("Don Benito") Wilson in 1864 no doubt based on faint footpaths utilized by the Gabrielino Indians. His goal in building this trail was to acquire timber from the mountaintop. In 1889 the trail was used to laboriously carry the Harvard University telescope up to the first observatory on top of Mt. Wilson. Don Benito built a construction camp halfway up the trail at what is now called Orchard Camp. What he referred to as his 'Halfway House' was later homesteaded by two Georges, George Aiken and George Islip, who planted an extensive grove of apple, cherry, plum and chestnut trees. In 1890 Orchard Camp was turned into a trail resort by James McNally which flourished and was immensely popular over the following five decades. In 1911 40,000 people signed the register at the camp. The trail resort was abandoned in 1940 and today is just a sylvan glen. Most people hike as far as First Water and turn around but there are those that hike to the top and back on a weekly basis.

Going over lists of species vouchered on or near the trail, there are clearly numerous species that have been either correctly or incorrectly identified since the beginning of the last century, and others that may have been located in nearby areas, but this gallery only includes those taxa that have been seen on the trail itself. There are still questions in my mind about certain taxa such as the oaks and the grasses in particular, and I am hoping that Tom Chester will be able to help me fill in some of these blanks. Toward the beginning of the trail there are a number of species that are clearly escapes from nearby residential areas, and I include them here simply because people might notice them and wonder what they are. The gallery includes a couple of adjacent minor trails such as the new high loop trail below First Water and the trail that goes up the canyon from First Water to the rope. This gallery is organized alphabetically by genus.

I would certainly be remiss were I not to acknowledge the generous and significant help of Tom Chester and I thank him for it. An asterisk next to the common name indicates a non-native species, and the symbol ~ is for a taxon that needs to be confirmed. If you are looking for a specific species, you can access a plant list here by both Latin and common names with links to the species.



Acacia
 
Cootamundra wattle *
Acacia baileyana
Fabaceae (Pea family)
Spring



Acer
 
Big-leaf maple
Acer macrophyllum
Sapindaceae
(Soapberry family)
April-May



Achillea
 
Yarrow
Achillea millefolium
Asteraceae (Sunflower family)
March-September



Acmispon
 
Short-winged deerweed
Acmispon glaber var. brevialatus
Fabaceae (Pea family)
March-August
 
 
Common deerweed
Acmispon glaber var. glaber
Fabaceae
(Pea family)
March-August

   
Coastal lotus
Acmispon maritimus var. maritimus
Fabaceae (Pea family)
March-June

     
Davidson's lotus
Acmispon nevadensis var. davidsonii
Fabaceae (Pea family)
May-August

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



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



Adenostoma
 
Chamise
Adenostoma fasciculatum var. fasciculatum
Rosaceae
(Rose family)
May-June



Adiantum
 
Five-finger fern
Adiantum aleuticum
Pteridaceae
(Brake family)



Ageratina
 
Thoroughwort *
Ageratina adenophora
Asteraceae
(Sunflower family)
Most months



Agoseris
     
Retrorse 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



Amorpha
 
California false-indigo
Amorpha californica var. californica
Fabaceae (Pea family)
May-July



Amsinckia
   
Common fiddleneck
Amsinckia intermedia
Boraginaceae (Borage family)
March-June



Anthriscus
 
Bur-chervil *
Anthriscus caucalis
Apiaceae (Carrot family)
April-June



Antirrhinum
 
Twining snapdragon
Antirrhinum kelloggii
Plantaginaceae (Plantain family)
March-May



Arbutus
   
Pacific madrone
Arbutus menziesii
Ericaceae (Heath family)
March-May



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



Argemone
   
Chicalote, Prickly poppy
Argemone munita
Papaveraceae (Poppy family)
June-August



Artemisia
     
California sagebrush
Artemisia californica
Asteraceae (Sunflower family)
August-December
Mugwort
Artemisia douglasiana
Asteraceae
(Sunflower family)
June-October



Aspidotis
 
California lace fern
Aspidotis californica
Pteridaceae (Brake family)



Asterella
     
California liverwort
Asterella californica
Aytoniaceae (Liverwort family)
Palmer's liverwort
Asterella palmeri
Aytoniaceae (Liverwort family)



Avena
 
Slender oats *
Avena barbata
Poaceae (Grass family)
March-June



Baccharis
   
Mulefat
Baccharis salicifolia ssp. salicifolia
Asteraceae (Sunflower family)
April-October
[L: Male flowers, R: female flowers]



Bidens
     
Common beggarticks *
Bidens pilosa
Asteraceae (Sunflower family)
May-November



Bituminaria
 
Pitch trefoil *
Bituminaria bituminosa
Fabaceae (Pea family)
April-May



Boechera
   
Arching rock-cress
Boechera arcuata
Brassicaceae (Mustard family)
March-May



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



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



Bromus
 
Ripgut brome *
Bromus diandrus
Poaceae (Grass family)
April-June
 
 
Red brome *
Bromus madritensis ssp. rubens
Poaceae (Grass family)
April-June



Calocedrus
 
Incense-cedar
Calocedrus decurrens
Cupressaceae (Cypress family)
April-May



Calochortus
 
Fairy lantern
Calochortus albus
Liliaceae (Lily family)
April-June
 
 
Plummer's mariposa lily
Calochortus plummerae
Liliaceae (Lilyfamily)
May-July



Calyptridium
 
Sand cress
Calyptridium monandrum
Montiaceae (Miner's lettuce family)
March-June



Calystegia
   
Southern California morning glory
Calystegia macrostegia ssp. arida
Convolvulaceae (Morning glory family)
May-June



Camissoniopsis
 
San Bernardino sun cup
Camissoniopsis confusa
Onagraceae (Evening primrose family)
March-May



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



Cardamine
 
Bittercress
Cardamine oligosperma
Brassicaceae (Mustard family)
March-July

 
Milkmaids
Cardamine californica
Brassicaceae (Mustard family)
February-May



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



Castilleja
   
Martin's paintbrush
Castilleja applegatei ssp. martinii
Orobanchaceae (Broomrape family)
May-September



Caulanthus
   
California mustard
Caulanthus lasiophyllus
Brassicaceae (Mustard family)
March-June



Ceanothus
 
Hoaryleaf ceanothus
Ceanothus crassifolius var. crassifolius
Rhamnaceae (Buckthorn family)
January-April
 
 
Deerbrush
Ceanothus integerrimus var. macrothyrsus
Rhamnaceae (Buckthorn family)
January-April

 
Chaparral whitethorn
Ceanothus leucodermis
Rhamnaceae (Buckthorn family)
January-April
 
 
Hairy ceanothus
Ceanothus oliganthus var. oliganthus
Rhamnaceae (Buckthorn family)
January-April

 
Bigpod ceanothus
Ceanothus megacarpus var. megacarpus
Rhamnaceae (Buckthorn family)
January-April
 
 
Greenbark ceanothus
Ceanothus spinosus
Rhamnaceae (Buckthorn family)
February-May



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



Cercocarpus
   
Birch-leaf mountain mahogany
Cercocarpus betuloides var. betuloides
Rosaceae (Rose family)
March-April



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



Chasmanthe
 
African cornflag *
Chasmanthe floribunda
Iridaceae (Iris family)
Late autumn-early spring



Chenopodium
 
Pitseed goosefoot (TBD)
Chenopodium berlandieri
Chenopodiaceae (Goosefoot family)
July-September



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



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



Clarkia
 
Farewell-to-spring
Clarkia bottae
Onagraceae (Evening primrose family)
April-June
 
 
Canyon clarkia
Clarkia epilobioides
Onagraceae (Evening primrose family)
March-May

 
Elegant clarkia
Clarkia unguiculata
Onagraceae (Evening primrose family)
May-June



Claytonia
 
Southern miner's lettuce
Claytonia perfoliata ssp. mexicana
Montiaceae (Montia family)
February-June



Clematis
 
Pipestems
Clematis lasiantha
Ranunculaceae (Buttercup family)
January-June



Collinsia
     
Downy Chinese houses
Collinsia heterophylla var. austromontana
Plantaginaceae (Plantain family)
May-August
Parry's collinsia
Collinsia parryi
Plantaginaceae (Plantain family)
March-June


|
Cotula
   
Australian brass buttons *
Cotula australis
Asteraceae (Sunflower family)
January-May



Cordylanthus
   
Bristly bird's beak
Cordylanthus rigidus ssp. setiger
Orobanchaceae (Broomrape family)
July-August



Corethrogyne
   
California-aster
Corethrogyne filaginifolia
Asteraceae (Sunflower family)
June-November



Cosmos
 
Mexican aster *
Cosmos bipinnatus
Asteraceae (Sunflower family)
Bloomingperiod



Crassula
 
Jade plant *
Crassula ovata
Crassulaceae (Stonecrop family)
Winter months



Cryptantha
     
Large-flowered cryptantha
Cryptantha intermedia var. intermedia
Boraginaceae (Borage family)
March-July
Tejon cryptantha
Cryptantha microstachys
Boraginaceae (Borage family)
March-June

 
Jones' cryptantha
Cryptantha muricata var. jonesii
Boraginaceae (Borage family)
March-June
 
 
Showy prickly-nut cryptantha
Cryptantha muricata var. muricata
Boraginaceae (Borage family)
March-July



Cuscuta
     
California dodder
Cuscuta californica var. californica
Family (family)
May-July
Canyon dodder
Cuscuta subinclusa
Family (family)
June-October



Cynodon
   
Bermuda grass *
Cynodon dactylon
Poaceae (Grass family)
June-August



Cystopteris
 
Brittle fern
Cystopteris fragilis
Woodsiaceae (Cliff fern family)



Delairea
 
Cape-ivy *
Delairea odorata
Asteraceae (Sunflower family)
December-March



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



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



Digitalis
 
Foxglove *
Digitalis purpurea
Plantaginaceae (Plantain family)
May-June



Diplacus (formerly Mimulus)
     
Bush monkeyflower
Diplacus longiflorus
Phrymaceae (Lopseed family)
March-June

   
Yellow monkeyflower
Diplacus brevipes
Phrymaceae (Lopseed family)
April-June



Drymocallis
     
Inland sticky cinquefoil
Drymocallis glandulosa var. glandulosa
Rosaceae (Rose family)
May-July



Dryopteris
   
Coastal wood fern
Dryopteris arguta
Dryopteridaceae (Wood fern family)



Dudleya
     
Low canyon dudleya
Dudleya cymosa ssp. pumila
Crassulaceae (Stonecrop family)
April-July
Lanceleaf dudleya
Dudleya lanceolata
Crassulaceae (Stonecrop family)
May-July



Elymus
     
Blue wildrye
Elymus glaucus ssp. glaucus
Poaceae (Grass family)
June-August
Intermediate wheat grass *
Elymus hispidus
Poaceae (Grass family)
June-August



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



Epilobium
     
California fuchsia
Epilobium canum ssp. latifolium
Onagraceae (Evening primrose family)
August-September
Hoary fuchsia
Epilobium canum ssp. canum
Onagraceae (Evening primrose family)
August-October



Ericameria
     
Rock goldenbush
Ericameria cuneata var. cuneata
Asteraceae (Sunflower family)
September-November
Parish's goldenbush
Ericameria parishii var. parishii
Asteraceae (Sunflower family)
July-October



Erigeron
     
Small horseweed *
Erigeron bonariensis
Asteraceae (Sunflower family)
June-August
Tall horseweed
Erigeron canadensis
Asteraceae (Sunflower family)
June-September

 
Leafy daisy
Erigeron foliosus var. foliosus
Asteraceae (Sunflower family)
May-July



Eriodictyon
     
Poodle-dog bush
Eriodictyon parryi
Boraginaceae (Borage family)
June-August
Smoothleaf yerba santa
Eriodictyon trichocalyx var. trichocalyx
Boraginaceae (Borage family)
May-August



Eriogonum
     
Davidson's buckwheat
Eriogonum davidsonii
Polygonaceae (Buckwheat family)
June-September
Longstem buckwheat
Eriogonum elongatum var. elongatum
Polygonaceae (Buckwheat family)
August-November

   
Leafy buckwheat
Eriogonum fasciculatum var. foliolosum
Polygonaceae (Buckwheat family)
Most months

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



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



Erodium
   
Red-stem filaree *
Erodium cicutarium
Geraniaceae (Geranium family)
February-May



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



Erythranthe (formerly Mimulus)
     
Creek monkeyflower
Erythranthe guttata
Phrymaceae (Lopseed family)
March-August

     
Scarlet monkeyflower
Erythrantha cardinalis
Phrymaceae (Lopseed family)
April-October



Eschscholzia
 
California poppy
Eschscholzia californica
Papaveraceae (Poppy family)
February-September



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



Eulobus
   
California sun cup
Eulobus californicus
Onagraceae (Evening primrose family)
April-May



Euphorbia
   
Red-gland spurge
Euphorbia melanadenia
Euphorbiaceae (Spurge family)
December-May

 
Petty spurge *
Euphorbia peplus
Euphorbiaceae (Spurge family)
February-August



Festuca
 
Italian ryegrass *
Festuca perennis
Poaceae (Grass family)
June-August



Frangula
   
Coffeeberry
Frangula californica ssp. californica
Rhamnaceae (Buckthorn family)
May-July



Galium
     
Narrow-leaved bedstraw
Galium angustifolium ssp. angustifolium
Rubiaceae (Madder family)
April-June
Annual bedstraw
Galium aparine
Rubiaceae (Madder family)
March-July

 
San Gabriel bedstraw
Galium grande
Rubiaceae (Madder family)
May-July
 
 
Graceful bedstraw
Galium porrigens var. porrigens
Rubiaceae (Madder family)
March-June



Gilia
   
Globe gilia
Gilia capitata ssp. abrotanifolia
Polemoniaceae (Phlox family)
March-July



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



Hedera
   
English ivy *
Hedera helix
Araliaceae (Ginseng family)
July-August



Helianthus
   
Common sunflower
Helianthus annuus
Asteraceae (Sunflower family)
February-October



Hesperoyucca
     
Chaparral yucca, Our Lord's Candle
Hesperoyucca whipplei
Agavaceae (Agave family)
April-June



Heteromeles
   
Toyon
Heteromeles arbutifolia
Rosaceae (Rose family)
June-July



Heuchera
     
Elegant alumroot
Heuchera elegans
Saxifragaceae (Saxifrage family)
May-June



Hieracium
   
Hawkweed
Hieracium argutum
Asteraceae (Sunflower family)
June-August



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



Hordeum
 
Foxtail barley *
Hordeum murinum
Poaceae (Grass family)
April-June



Hosackia
   
Broad-leaved lotus
Hosackia crassifolia var. crassifolia
Fabaceae (Pea family)
May-August



Juglans
     
California black walnut
Juglans californica
Juglandaceae (Walnut family)
March-May
[Left: Male flowers, Right: Female flowers]



Keckiella
     
Heartleaf penstemon
Keckiella cordifolia
Plantaginaceae (Plantain family)
May-July
Whorl-leaf penstemon
Keckiella ternata var. ternata
Plantaginaceae (Plantain family)
June-September



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



Lamarckia
   
Goldentop grass *
Lamarckia aurea
Poaceae (Grass family)
February-May



Lantana
 
Trailing lantana *
Lantana montevidensis
Verbenaceae (Vervain family)
Most months



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



Layia
 
White tidy tips
Layia glandulosa
Asteraceae (Sunflower family)
March-June



Lepidium
 
Wild peppergrass
Lepidium virginicum ssp. menziesii
Brassicaceae (Mustard family)
March-August



Lilium
   
Humboldt lily
Lilium humboldtii ssp. ocellatum
Liliaceae (Lily family)
June-July



Linanthus
     
Prickly phlox
Linanthus californicus
Polemoniaceae (Phlox family)
March-June



Lithophragma
   
Woodland star
Lithophragma affine
Saxifragaceae (Saxifrage family)
February-June



Lobularia
     
Sweet alyssum *
Lobularia maritima
Brassicaceae (Mustard family)
Most months



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



Lonicera
   
Southern honeysuckle
Lonicera subspicata var. denudata
Caprifoliaceae (Honeysuckle family)
April-June



Lupinus
     
Stinging lupine
Lupinus hirsutissimus
Fabaceae (Pea family)
March-May

   
Bush lupine
Lupinus longifolius
Fabaceae (Pea family)
April-June

 
Collar lupine
Lupinus truncatus
Fabaceae (Pea family)
March-May
 
 
Coulter's lupine
Lupinus sparsiflorus
Fabaceae (Pea family)
March-May



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



Malosma
   
Laurel sumac
Malosma laurina
Anacardiaceae (Sumac family)
June-July



Malva
 
Cheeseweed *
Malva parviflora
Malvaceae (Mallow family)
Most months



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



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



Meconella
   
Small-flowered meconella
Meconella denticulata
Papaveraceae (Poppy family)
March-May



Medicago
   
California bur-clover *
Medicago polymorpha
Fabaceae (Pea family)
March-June



Melica
   
Coast range melic
Melica imperfecta
Poaceae (Grass family)
April-May



Mentzelia
   
Giant blazing star
Mentzelia laevicaulis
Loasaceae (Loasa family)
June-October

   
Stickleaf
Mentzelia micrantha
Loasaceae (Loasa family)
April-May



Mirabilis
     
Wishbone bush
Mirabilis laevis var. crassifolia
Nyctaginaceae (Four o'clock family)
December-June



Muilla
   
Common muilla
Muilla maritima
Themidaceae (Brodiaea family)
March-June



Myriopteris
 
Coville's lip fern
Myriopteris covillei
Pteridaceae (Brake family)



Nemophila
   
Baby blue eyes
Nemophila menziesii var. integrifolia
Boraginaceae (Borage family)
February-June



Nerium
 
Oleander *
Nerium oleander
Apocynaceae (Dogbane family)
Summer and fall



Nicotiana
   
Tree tobacco *
Nicotiana glauca
Solanaceae (Nightshade family)
April-August



Opuntia
     
Mission cactus *
Opuntia ficus-indica
Cactaceae (Cactus family)
May-June



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



Oxalis
 
Bermuda buttercup *
Oxalis pes-caprae
Oxalidaceae (Oxalis family)
November-March



Papaver
 
Oriental poppy *
Papaver orientale
Papaveraceae (Poppy family)
Mid-summer



Pellaea
   
Coffee fern
Pellaea andromedifolia
Pteridaceae ( Brake family)

   
Bird's-foot fern
Pellaea mucronata var. mucronata
Pteridaceae ( Brake family)



Peniocereus
 
Snake cactus *
Peniocereus serpentinus
Cactaceae (Cactus family)
Mid-summer



Penstemon
   
Scarlet bugler
Penstemon centranthifolius
Plantaginaceae (Plantain family)
April-July

   
Grinnell's penstemon
Penstemon grinnellii var. grinnellii
Plantaginaceae (Plantain family)
May-August

     
Glandular showy penstemon
Penstemon spectabilis var. subviscosus
Plantaginaceae (Plantain family)
April-June



Pentagramma
   
Goldback fern
Pentagramma triangularis ssp. triangularis
Pteridaceae (Brake family)



Phacelia
     
Yellow-throated phacelia
Phacelia brachyloba
Boraginaceae (Borage family)
May-June

     
Caterpillar phacelia
Phacelia cicutaria var. hispida
Boraginaceae (Borage family)
March-June

   
Common phacelia
Phacelia distans
Boraginaceae (Borage family)
March-June

   
Large-flowered phacelia
Phacelia grandiflora
Boraginaceae (Borage family)
April-June

     
Mountain phacelia
Phacelia imbricata
(NOTE: San Gabe plants seem to be intergrades between var. patula and var. imbricata, with narrow, non-overlapping, glandular calyx lobes)
Boraginaceae (Borage family)
April-July

   
Canterbury bells
Phacelia minor
Boraginaceae (Borage family)
March-June

     
Branching phacelia
Phacelia ramosissima
Boraginaceae (Borage family)
May-August



Phoenix
 
Canary Island palm *
Phoenix canariensis
Arecaceae (Palm family)
October-April



Pholistoma
   
Fiesta flower
Pholistoma auritum var. auritum
Boraginaceae (Borage family)
March-May



Phoradendron
   
Oak mistletoe
Phoradendron leucarpum ssp. tomentosum
Viscaceae (Mistletoe family)



Plumbago
 
Cape plumbago *
Plumbago auriculata
Plumbaginaceae (Leadwort family)
Most months



Polypodium
   
California polypody
Polypodium californicum
Polypodiaceae (Polypody family)



Polystichum
     
Cliff sword fern
Polystichum imbricans ssp. curtum
Dryopteridaceae (Woodfern family)



Prunus
     
Hollyleaf cherry
Prunus ilicifolia ssp. ilicifolia
Rosaceae (Rose family)
April-May



Pseudognaphalium
   
Fragrant everlasting
Pseudognaphalium beneolens
Asteraceae (Sunflower family)
July-November

     
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



Pseudotsuga
     
Big-cone douglas fir
Pseudotsuga macrocarpa
Pinaceae (Pine family)



Pterostegia
     
Threadstem
Pterostegia drymarioides
Polygonaceae (Buckwheat family)
March-July



Quercus
     
Coast live oak
Quercus agrifolia var. agrifolia
Fagaceae (Oak family)
Jan-April

     
Canyon live oak
Quercus chrysolepis
Fagaceae (Oak family)
April-May

     
San Gabriel Mountains leather oak
Quercus durata var. gabrielensis
Fagaceae (Oak family)
April-May



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



Rhamnus
   
Hollyleaf redberry
Rhamnus ilicifolia
Rhamnaceae (Buckthorn family)
March-June



Rhus
     
Sugar bush
Rhus ovata
Anacardiaceae (Sumac family)
March-May



Ribes
     
Hillside gooseberry
Ribes californicum var. hesperium
Grossulariaceae (Gooseberry family)
January-March

   
Chaparral currant
Ribes malvaceum var. viridifolium
Grossulariaceae (Gooseberry family)
January-May



Ricinus
     
Castor bean *
Ricinus communis
Euphorbiaceae (Spurge family)
Most months
[L: Female flowers, R: male flowers]



Rosmarinus
   
Rosemary *
Rosmarinus officinalis
Lamiaceae (Mint family)
Most months



Rubus
   
Western raspberry
Rubus leucodermis
Rosaceae (Rose family)
June-July

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



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



Saltugilia
     
Grant's woodland-gilia
Saltugilia splendens ssp. grantii
Polemoniaceae (Phlox family)
May-July



Salvia
   
White sage
Salvia apiana
Lamiaceae (Mint family)
April-July

 
Cleveland's sage
Salvia clevelandii
Lamiaceae (Mint family)
April-July

   
Chia
Salvia columbariae
Lamiaceae (Mint family)
March-June

     
Black sage
Salvia mellifera
Lamiaceae (Mint family)
April-July



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



Selaginella
   
Bigelow's spike-moss
Selaginella bigelovii
Selaginellaceae (Spike-moss family)



Senecio
     
Bush senecio
Senecio flaccidus var. douglasii
Asteraceae (Sunflower family)
June-October

   
Common groundsel *
Senecio vulgaris
Asteraceae (Sunflower family)
Most months



Silene
     
Windmill pink *
Silene gallica
Caryophyllaceae (Pink family)
February-June

     
Mexican pink
Silene laciniata ssp. laciniata
Caryophyllaceae (Pink family)
May-July

     
Parish's catchfly
Silene parishii
Caryophyllaceae (Pink family)
July-August



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



Solanum
   
White nightshade
Solanum douglasii
Solanaceae (Nightshade family)
Most months

     
Purple nightshade
Solanum xanti
Solanaceae (Nightshade family)
February-June



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



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



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



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



Stephanomeria
   
Chicory-leaved stephanomeria
Stephanomeria cichoriacea
Asteraceae (Sunflower family)
August-October

     
Twiggy wreathplant
Stephanomeria virgata ssp. virgata
Asteraceae (Sunflower family)
June-October



Stipa
     
Giant stipa
Stipa coronata
Poaceae (Grass family)
April-June

   
Smilo grass *
Stipa miliacea var, miliacea
Poaceae (Grass family)
April-September



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



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



Torilis
   
Field hedge-parsley *
Torilis arvensis
Apiaceae (Carrot family)
March-July



Toxicodendron
     
Western poison oak
Toxicodendron diversilobum
Anacardiaceae (Sumac family)
March-May



Trifolium
   
Rose clover *
Trifolium hirtum
Family (family)
April-May



Turritis
   
Tower mustard
Turritis glabra
Brassicaceae (Mustard family)
March-July



Umbellularia
     
California bay
Umbellularia californica
Lauraceae (Laurel family)
December-May



Vinca
 
Periwinkle *
Vinca major
Apocynaceae (Dogbane family)
March-July



Woodwardia
   
Giant chain fern
Woodwardia fimbriata
Blechnaceae (Deer family)


Copyright © 2017-2019 by Michael L. Charters.
The photographs contained on these web pages may not be reproduced without the express consent of the author.

Comments and/or questions may be addressed to: mmlcharters[at]gmail.com.