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Audio Tours of Mount Diablo
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The tours feature lively interviews and music with the rush of wind and the chirps, howls, and growls of wildlife, all downloadable to an audio video media player
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Wildflower Identification Guide

calochortus pulchellus logo mjw
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Wildflower Guide - yellow/orange & green

achyrachaena mollis blow wives khBlow Wives (flowers)
Achyrachaena mollis

Family: Asteraceae
Blooms: 
April - May

Photo: 
Kevin Hintsa

hesperolinon breweri brewers western flax mjw dscn1689Brewer's Western Flax
Hesperolinon breweri
 
Family:
 Linaceae
Blooms:
 May - June
 
acmispon wrangelianus khCalf Lotus, California Lotus
Acmispon wrangelianus
 
Family:
 
Fabaceae
Blooms:
 
March - May
 
Photo: Kevin Hintsa

california barberry flower mjw dscn3684bscalifornia barberry mjw dscn3676bsCalifornia Barberry
Berberis pinnata
 
Family:
 
Berberidaceae 
Blooms:
 
March 
yellow umbellularia californica khCalifornia Bay, California Bay Laurel
Umbellularia californica

Family: 
Lauraceae
Blooms: January - March


Photo: 
Kevin Hintsa


acmispon glaber deer weed mw p6144685scCalifornia Broom, Deer Weed
Acmispon glaber var. glaber
 
Family:
 
Fabaceae
Blooms:
 
March - July
medicago polymorpha bur clover mw dscn3781scCalifornia Bur Clover
Medicago polymorpha

Family:
 
Fabaceae
Blooms:
 
March - June
california buttercup mjw dsc05732California Buttercup
Ranunculus californicus var. californicus
 
Family: Ranunculaceae
Blooms: February - March
 

senecio aronicoides khCalifornia Butterweed, Rayless Ragwort
Senecio aronicoides

Family: Asteraceae
Blooms: April - May

Photos: Kevin Hintsa

lomatium californicum kuCalifornia Lomatium
Lomatium californicum

Family: Papaveraceae
Blooms: April

Photo: Ken-ichi Ueda
eschscholzia californica khCalifornia Poppy
Eschscholzia californica
 
Family: Papaveraceae
Blooms: March - June
 

Photo: Kevin Hintsa

lomatium caruifolium kh dscn5747Caraway-leaved Lomatium, Alkali Desertparsley
Lomatium caruifolium

Family: Apiaceae
Blooms: April - May

Photo: Kevin Hintsa
clematis lasiantha chaparral clematis mw dscn4043Chaparral Clematis, Old Man's Beard
Clematis lasiantha

Family: Ranunculaceae
Blooms: April - June

 

checker lily mjw dsc06325checker lily flower mjw dsc06323Checker Lily,
Mission Bells

Fritillaria affinis
 
Family: Liliaceae
Blooms: March - May
 
phloxleaf bedstraw galium andrewsii mw dscn3795scClimbing Bedstraw
Galium porrigen
 
Family: Rubiaceae
Blooms:
 March - May

broomrape-yellow mjw dsc04160Clustered Broomrape
Orobanche fasciculata
 
Family: Orobanchaceae
Blooms: March - June
 
arnica discoidea rayless arnica khCoast Arnica, Rayless Amica
Arnica discoidea

Family: 
Asteraceae
Blooms:
 May - June
 
Photo: 
Kevin Hinsta
acmispon brachycarpus colchita mw dscn0199Colchita
Acmispon brachycarpus
 
Family: Fabaceae
Blooms: April - May
senecio vulgaris1 sbCommon Groundsel
Senecio vulgaris
 
Family: Asteraceae
Blooms: May - June
 
Photo: Steve Beatty
 
yellow seep monkeyflower mjw dscn1418Common Monkeyflower, Seep Monkeyflower
Mimulus guttatus
 
Family: Phrymaceae
Blooms: March - June
 

male baccharis pilularis1 khCoyote Bush - male
Baccharis pilularis ssp. consanguinea
 
Family: 
Asteraceae
Blooms: 
August - November
 
Photo: 
Kevin Hinsta
 
platystemon californicus cream cup mjw dscn2410Cream Cups
Platystemon californicus 
 
Family:
 Papaveraceae
Blooms: March - April

castilleja rubicundula khCream Sacs
Castilleja rubicundula ssp lithospermoides
 
Family: Fabaceae
Blooms: April - June

Photos: Kevin Hintsa


thalictrum fendleri fendlers meadow-rue mw dscn3967scFendler's Meadow Rue (female)
Thalictrum fendleri

Family:
 Papaveraceae
Blooms: March - April

amsinckia menziesii var. intermedia khFiddleneck
Amsinckia intermedia
 
Family: Boraginaceae
Blooms: February - June
 

yellow calochortus pulchellus mjw dsc01510Globe Lily, Mount Diablo Fairy Lantern, Mount Diablo Globe Tulip
Calochortus pulchellus
 
Family: Liliaceae
Blooms: April - June
 

mentzelia micrantha blazing star dpGolden Blazing Star, San Luis Stickleaf
Mentzelia micrantha
 
Family: Loasaceae
Blooms: May - June
 
Photos: Donna Pomeroy - iNaturalist
ehrendorferia chrysantha golden eardrops2 mw dsc06208ehrendorferia chrysantha golden eardrops1 mw dsc06201Golden Eardrops
Ehrendorferia chrysantha 

Family: Poaceae
Blooms: April

ericameria arborescens hfGolden-fleece
Ericameria arborescens
 
Family: Asteraceae
Blooms: August - Sepember

eriophyllum confertiflorum khGolden-yarrow
Eriophyllum confertiflorum var. confertiflorum
 
Family: Asteraceae
Blooms: May - June
 
Photos: Kevin Hintsa
lasthenia californica 2 khGoldfields
Lasthenia californica
 
Family: Asteraceae
Blooms: March - April
 
Photos: Kevin Hintsa
yellow grindelia camporum khGreat Valley Gumplant, Gumplant, Gumweed
Grindelia camporum
 
Family: Asteraceae
Blooms: March - October
 
Photo: Kevin Hintsa
madia gracilis kuGumweed, Slender Madia
Madia gracilis
 
Family: Asteraceae
Blooms: April - June
 
Photo: Ken-ichi Ueda
sparaxis tricolor harlequin flower bkHarlequin Flower
Sparaxis tricolor
 
Family: Iridaceae
Blooms: March - April
 
Photo: Bill Karieva

tauschia hartwegii umbrellawort mw dsc01447scHartweg's Tauschia, Umbrellawort
Tauschia hartwegii
 
Family: Apiaceae
Blooms: April - June


sisymbrium officinale hedge mustard khHedge Mustard
Sisymbrium officinale

Family: Brassicaceae
Blooms: April - June
 
Photo: Kevin Hintsa

rhamnus ilicifolia bbHollyleaf Redberry
Rhamnus ilicifolia

Family: 
Rhamnaceae
Blooms: 
May - June

Photo:
 
Barry Breckling - iNaturalist
 
viola pedunculata mw dscn3838viola pedunculata mw dscn3841Johnny Jump-Up
Viola pedunculata
 
Family: 
Asteraceae
Blooms: 
March - October

lomatium dasycarpum ssp. dasycarpum mjw dscn3531sclomatium dasycarpum ssp. dasycarpum mjw dscn3532scLace Parsnip, Hog Fennel
Lomatium dasycarpum ssp. dasycarpum
 
Family: Apiaceae
Blooms: February - April
 

green rein orchid mjw dsc01472Michael's Rein Orchid
Piperia michaelii

Family: 
Orchidaceae
Blooms: 
May - June
 
helianthella castanea 2 khMount Diablo Sunflower
Helianthella castanea
 
Family: Asteraceae
Blooms: April - June

 
Photo: Kevin Hintsa

cercocarpus betuloides khcercocarpus betuloides1 khMountain Mahogany
Cercocarpus betuloides var. betuloides
 
Family: Rosaceae
Blooms: April

 
Photo: Kevin Hintsa - iNaturalist
yellow viola pedunculata khMountain Violet
Viola purpurea
 
Family: Violaceae
Blooms: March - May
 
Photo: Kevin Hintsa

wyethia glabra mules ear mw dsc04035Mule Ears
Wyethia glabra
 
Family: Asteraceae
Blooms: April
 

yellow mustard kh dscn0179Mustards
Brassica nigra + others
 
Family: Brassicaceae
Blooms: January - June
 
Photo: Kevin Hintsa

yellow ericameria linearifolia khNarrow-leaf Bush Sunflower, Interior Goldenbush, Narrow-leaf Goldenbush, Shrubby Yellow Aster
Ericameria linearifolia

Family: Asteraceae
Blooms: March - June

Photo: Kevin Hintsa
wyethia glabra mules ear mw dsc04035Narrow-leaf Mule Ears
Wyethia angustifolia
 
Family: Asteraceae
Blooms: April - June
 
 
eriophyllum lanatum khOregon Sunshine, Woolly Sunflower
Eriophyllum lanatum

Family: 
Apiaceae 
Blooms: 
March - June 
 
Photo: 
Kevin Hintsa
galium andrewsii mw dscn3798Phlox-leafed Serpentine Bedstraw, Serpentine Bedstraw
Galium andrewsii subsp. gatense

Family: 
Rubiaceae
Blooms: 
June 
matricaria discoidea pineapple weed dscn3922Pineapple Weed
Matricaria discoidea

Family: Asteraceae
Blooms: March - April


poison oak toxicodendron diversilobum mjw 20170213 100828Poison Oak
Toxicodendron diversilobum
 
Family: Anacardiaceae
Blooms: 
March - May
 
sanicula bipinnata 2 khPoison Sanicle
Sanicula bipinnata
 
Family: Apiaceae
Blooms: March
 
Photo: Kevin Hintsa

raphanus sativus wild radish mw dscn3674scRadish, Wild Radish
Raphanus sativus
 
Family: Brassicaceae
Blooms: March - June
sanicula saxatilis kh dscn5563Rock Sanicle
Sanicula saxatilis
 
Family: Apiaceae
Blooms: April - May

Photo: Kevin Hintsa
helenium puberulum mjw dscn1420Rosilla
Helenium puberulum
 
Family: Asteraceae
Blooms: July - November
 

yellow buttercup mjw dsc04238Sacramento Valley Buttercup
Ranunculus canus
 
Family: Ranunculaceae
Blooms: February - April
 

pumpernickle1 mjwScarlet Pimpernel
Lysimachia arvensis
 
Family: Myrsinaceae
Blooms: March - June
 
camissoniopsis hirtella ssSelf-pollinating Suncup, Hairy Suncup
Camissoniopsis hirtell
 
Family: Onagraceae
Blooms: May - June

Photo: Steve Smith - iNaturalist

lomatium macrocarpum khSheep Parsnip
Lomatium macrocarpum
 

Family:
 Apiaceae
Blooms: April
 
uropappus lindleyi dscn3878scuropappus lindleyi dscn3876scSilverpuffs (flower)
Uropappus lindleyi
 
Family:
 Asteraceae
Blooms: March - June
 

rhus aromatica skunk bush mw dscn4063scbmSkunk Bush, Skunkbush
Rhus aromatica

Family: Anacardiaceae
Blooms: 
March - April

psilocarphus tenellus slender woolly-heads mw dscn2707Slender Woolly-Heads
Psilocarphus tenellus

Family: Asteraceae
Blooms: April


sanicula crassicaulis snakeroot gamble weed pacific sanicle mw dscn3928Snakeroot, Gamble Weed, Pacific Sanicle
Sanicula crassicaulis

Family: Apiaceae
Blooms: Frequent


yellow oxalis oxalis corniculata mjw dscn3559scSourgrass, Bermuda-buttercup
Oxalis pes-caprae
 
Family: 
Oxalidaceae
Blooms: 
Spring
 
lomatium utriculatum khSpring Gold, Parsnip Bladder, Common Lomatium
Lomatium utriculatum
 
Family: Apiaceae
Blooms: February - May
 

mimulus aurantiacus yellow mjwSticky Monkeyflower, Bush Monkeyflower
Mimulus aurantiacus
 
Family: Phrymaceae
Blooms: March - August
 
eriogonum umbellatum sulphur buckwheat mw p7065100Sulfur Buckwheat
Eriogonum umbellatum var. bahiforme

Family: Polygonaceae
Blooms: June
layia hieracioides sb dscn8550rTall Layia
Layia hieracioides
 
Family: Asteraceae
Blooms: April - May
 
Photo: Steve Beatty
layia platyglossa tidy-tips rak dsc01459Tidy-tips
Layia platyglossa
 
Family: Asteraceae
Blooms: April - June
 
Photo: Ruth Ann Kishi
sanicula tuberosa  mw dscn2561Tuberous Sanicle, Turkey Pea
Sanicula tuberosa
 
Family: Apiaceae
Blooms: 
March - May

erysimum capitatum western wallflower jp mt. diablo with ladybugWestern Wallflower
Erysimum capitatum var. capitatum
 
Family: Brassicaceae
Blooms: 
March - May
 
Photo: Jayah Faye Paley

emmenanthe penduliflora whispering bells mw dscn0365emmenanthe penduliflora whispering bells mw dscn0363Whispering Bells
Emmenanthe penduliflora var. penduliflora
 
Family: Boraginaceae
Blooms: April - June

Notes: Fire Follower
 
papaver heterophyllum wind poppy mw dscn0337papaver heterophyllum wind poppy mw dsc04057Wind Poppy
Papaver heterophyllum
 
Family: Papaveraceae
Blooms: April - June

barbarea orthoceras sb img 2690Winter Cress
Barbarea orthoceras

Family: 
Brassicaceae 
Blooms: 
Feburary - May
 
Photo: 
Steve Beatty
 
monolopia gracilens woodland woollythreads kh 0098Woodland Woolly Threads
Monolopia gracilens
 
Family: Asteraceae
Blooms: April - May

Notes: Fire Follower
 
yellow indian warrior rak dscn1757-sWoolly Paintbrush, Woolly Painted Cup
Castilleja foliolosa var. flava
 
Family: Orobanchaceae
Blooms: March - April

Photo: Ruth Ann Kishi
caulanthus flavescens dlYellow Flowered Jewelflower, Yellow California Mustard, Yellow Mustard
Caulanthus flavescens
 
Family: Brassicaceae
Blooms: March - April