Plant List has been updated with many additions and corrections from Glenn Keator and Calflora
(any errors are mine)
Yesterday I went on a field trip with members of the Regional Park Botanic Garden to Walker Ridge. Walker Ridge is north of Highway 20, on the eastern edge of Lake County. It is parallel to west of Bear Valley, a well-known wildflower hotspot. The trip was led by Glen Keator a top field botanist, teacher, field trip leader, and author of botanical field guides and native plant gardening books.
We drove through Bear Valley to get to the beginning of the road to Walker’s Ridge. As expected most of the wildflowers in Bear Valley were well past. There were some remaining California Poppies and some alien Morning Glory. If you looked at the hills on either side of the valley it was very obvious how the north facing slopes had many more trees than the drier and hotter the hills with southern exposure.
On Walker Ridge we explored mainly by driving the roads and some short walks We found many species in bloom and others that were finished flowering. The only wildflowers that were in large numbers were Clarkias and Delphiniums.
This is definitely a trip for the plant lovers. As we covered a lot of territory today and the focus was on finding plants I only did some quick grab shots. See the best photos from today below and click Read More to see a very detailed plant list. Corrections and additions to the plant list by other participants are most welcome.
Walker Ridge Plant List 6/1/2013
Regional Park Botanic Garden Friends Trip led by Glenn Keator
| Adenostema fasiculatum | Chamise | Rosaceae |
| Aesculus californica | California Buckeye | Sapindaceae |
| Agoseris sp | Asteraceae | |
| Allium amplectens, A. falcifolia | Narrowleaf Onion | Alliaceae |
| Antirrhinum vexillo-calyculatum | Wild Snapdragon | Scrophulariaceae |
| Arctostaphylos manzanita | Whiteleaf Manzanita | Ericaceae |
| Arctostaphylos viscida ssp. pulchella | Sticky Whiteleaf Manzanita | Ericaceae |
| Argemone munita (ssp. rotundata) | Prickly Poppy | Papaveraceae |
| Arnica discoidea | Rayless Arnica | Asteraceae |
| Ascelpias solonoana | Prostrate Milkweed | Asclepiadaceae |
| Aspidotis densa | Indian Dream | Pteridaceae |
| Baccharis pilularis | Coyote Bush | Asteraceae |
| Brodiaea coronaria | Crown Brodiaea | Themidaceae |
| Brodiaea coronaria ssp. rosea | Indian Valley Brodiaea | Themidaceae |
| Brodiaea elegans | Harvest Brodiaea | Themidaceae |
| Bromus carinatus | California Brome Grass | Poaceae |
| Canchalangua | Zeltnera venusta | Gentianaceae |
| Calochortus amabilis | Yellow Fairy Lantern | Lilaceae |
| Calochortus luteus | Gold Nuggets | Lilaceae |
| Calochortus splendens | Pink Mariposa | Lilaceae |
| Calochortus superbus | White Gold Nuggets | Lilaceae |
| Calycanthus occidentalis | Spice Bush | Calycanthaceae |
| Castilleja foliolosa | Wooly Indian Paintbrush | Orobanchaceae |
| Castilleja rubicundula | Cream Sacs | Orobanchaceae |
| Ceanothus foliosus | Jim Bush | Rhamnaceae |
| Ceanothus jepsonii albiflorus | Hybrid Ceanothus | Rhamnaceae |
| Ceanothus oliganthus | Hairy Ceanothus | Rhamnaceae |
| Centromadia pungens | Common Tarweed | Asteraceae |
| Cercocarpus betuloides | Mountain Mahogany | Rosaceae |
| Chaenactis glabriuscula | Common Yellow Chaenactis | Asteraceae |
| Chlorogalum pomeridianum | Wavyleaf Soap Plant | Agavaceae |
| Clarkia cocinna | Red Ribbons | Onagraceae |
| Clarkia gracillis | Tracy’s Farewell-to-spring | Onagraceae |
| Cordylanthus sp | Orobanchaceae | |
| Cryptantha sp | Boraginaceae | |
| Cupressus macnabiana | McNab Cypress | Cupressaceae |
| Cupressus sargentii | Sargent Cypress | Cupressaceae |
| Delphinium ulginosum | Bog Larkspur | Ranunculaceae |
| Deschampsia danthonioides | Hairgrass | Poacae |
| Elymus elymoides ssp. elymoides | Squirreltail | Poaceae |
| Eriodictyon californicum | Yerba Santa | Hydrophyllaceae |
| Eriogonum luteolum | Polygonaceae | |
| Eriogonum nudum var. nudum | Naked-stemmed Buckwheat | Polygonaceae |
| Eriophyllum lanatum var. achillaeoides | Wooly-sunflower | Asteraceae |
| Erysimum capitatum ssp. capitatum | Wallflower | Brassicaeae |
| Eschscholzia californica | California Poppy | Papaveraceae |
| Frangula californica (formerly Rhamnus californica) | Coffeeberry | Rhamnaceae |
| Fraxinus dipetala | California Ash | Oleaceae |
| Fritillaria recurva | Scarlett Fritillary | Liliaceae |
| Galium andrewsii | Pinemat | Rubiaceae |
| Garrya congdonii | Congdon’s Silk Tassel | Garryaceae |
| Gilia capitata | Blue Field Gilia | Polemoniaceae |
| Glycyrrhiza lepidota var. glutinosa | Wild Licorice | Fabaceae |
| (Pseudo)gnaphalium californicum | California Everlasting | Asteraceae |
| Grindelia camporum var. camporum | Great Valley Gum-plant | Asteraceae |
| Helianthella californica | Helianthella | Asteraceae |
| Helianthus bolanderi | Bolander’s or Serpentine Sunflower | Asteraceae |
| Hesperolinon californicum | Dwarf-flax | Linaceae |
| Heteromeles arbutifolia | Toyon | Rosaceae |
| Hordeum brachyantherum | Wild Barley | Poaceae |
| Horkelia californica ssp. dissita | Tall Horkelia | Rosaceae |
| Holodiscus discolor | Cream Bush | Rosaceae |
| Juncus spp | Rush | Juncaceae |
| Keckiella breviflora ssp. glabrisepala | Bush Penstemon | Plantaginaceae |
| Linanthus sp | Polemoniaceae | |
| Lotus grandiflorus var. grandflorus | Pale lotus | Fabaceae |
| Madia elegans ssp. vernalis | Spring Tarweed | Asteraceae |
| Minuartia douglasii | Douglas’ Sandwort | Caryophyllaceae |
| Monardella villosa ssp. francisiana | Coyote-mint | Lamiaceae |
| Navarretia heterandra | Tehama Navarretia | Polemoniaceae |
| Orobanche fasciculata | Clustered Broom-rape | Orobanchaceae |
| Packera greenei | Flame Butterwort | Asteraceae |
| Pedicularis densiflorus | Indian Warrior | Orobanchaceae |
| Pediomelum californicum | California Indian Breadroot | Fabaceae |
| Penstemon heterophyllus | Foothill Penstemon | Plantaginaceae |
| Perideridia kelloggii | Kellogg’s Yampah | Apiaceae |
| Phacelia sp | Boraginaceae | |
| Phoradendron juniperinum | Juniper Mistletoe | Phoradendron |
| Pickeringia Montana var. Montana | Chaparral Pea | Fabaceae |
| Pinus attenuate | Knobcone Pine | Pinaceae |
| Pinus sabiniana | Gray Pine | Pinaceae |
| Quercus berberidfolia | Scrub Oak | Fagaceae |
| Quercus douglasii | Blue Oak | Fagaceae |
| Quercus durata var. durarta | Leather Oak | Fagaceae |
| Quercus wislizenii | Interior Live Oak | Fagaceae |
| Ribes malvaceum | Chaparral Currant | Grossulariaceae |
| Rosa californica | California Wild Rose | Rosaceae |
| Schoenoplectus acutus var. occidentalis (formerly Scirpus) | Common Tule | Cyperacae |
| Scutellaria siphocampyloides | Austin’s Scullcap | Lamiaceae |
| Senecio eurcephalus var. eurycephalus | Cut-leaved Butterweed | Asteraceae |
| Silene campanulata ssp. glandulosa | Sticky Campanulate Campion | Caryophyllaceae |
| Sisyrinchium bellum | Blue-eyed Grass | Iridaceae |
| Stachys albens | White Hedge-nettle | Lamiaceae |
| Streptanthus brewerii | Brewer’s Jewel-flower | Brassicaceae |
| Styrax officinalis var. redividus | Snowdrop Bush | Styracaceae |
| Tamarxis sp | Tamarisk | Tamaricaceae |
| Tauschia sp. | Umbrellawort | Apiaceae |
| Toxicodendron diversilobum | Poison Oak | Anacardiaceae |
| Toxicoscordium venusum var. venusum (Zigadenus venenosus var. venenosus) | Death Camus | Melanthiaceae |
| Triteleia peduncularis | Long Rayed Triteleia | Themidaceae |
| Umbellularia californica | California Bay | Lauraceae |
| Viola purpurea | Mountain Violet | Violaceae |
| Wyethia angustifolia | Foothill Mule’s-ears | Asteraceae |
| Yarrow | Achillea millefolium | Asteraceae |
Natural History Wanderings 
Interesting little beetle on the red ribbons!
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By: John Wall on June 2, 2013
at 5:17 PM
Can you ID him?
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By: Sandy Steinman on June 2, 2013
at 5:54 PM
No, it’s much too small a picture for me to even hazard a guess. If you’re really curious, you can submit an ID Request at Bug Guide. A beetle I photographed in Del Puerto Canyon turned out to be a potentially new species. A biologist went up three times to try to find it and plans to try again next year.
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By: John Wall on June 3, 2013
at 9:50 AM
That is pretty cool. I don’t think I will submit this one though as it isn’t that important.
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By: Sandy Steinman on June 3, 2013
at 12:26 PM