| Odontostomum hartwegii |
Hartweg's doll's lily |
No |
| Oemleria cerasiformis |
Oso berry |
Yes |
| Oenothera californica |
California Primrose |
No |
| Opuntia ‘Baby Rita’ |
'Baby Rita' dwarf prickly pear |
Yes |
| Opuntia basilaris var. basilaris |
Beavertail Pricklypear |
No |
| Opuntia engelmannii |
Enghelmann Pricklypear |
No |
| Opuntia polyacantha var. erinacea |
Old Man Cactus |
Yes |
| Opuntia prolifera |
Coast Cholla |
Yes |
| Opuntia X vaseyi |
Vasey's Prickly Pear |
Yes |
| Ornithostaphylos oppositifolia |
Baja Bird Bush |
No |
| Oxalis oregana |
Redwood Sorrel |
No |
| Paeonia brownii |
Western Paeony |
Yes |
| Papaver heterophyllum |
Wind poppy |
No |
| Parkinsonia florida |
Blue Palo Verde |
No |
| Parkinsonia microphylla |
Yellow Palo Verde |
Yes |
| Penstemon azureus |
Azure penstemon |
No |
| Penstemon centranthifolius |
Scarlet bugler penstemon |
Yes |
| Penstemon clevelandii |
Cleveland's Beardtongue |
No |
| Penstemon clevelandii var connatus |
San Jacinto Beardtongue |
No |
| Penstemon davidsonii |
Davidson's penstemon |
No |
| Penstemon deustus |
Hot rock beardtongue |
No |
| Penstemon eatonii |
Firecracker penstemon |
Yes |
| Penstemon eatonii X ‘Yerba Buena’ |
'Yerba Buena' Firecracker penstemon hybrid |
No |
| Penstemon grinnellii |
Grinnell's Beardtongue |
No |
| Penstemon heterophyllus |
Foothill Penstemon |
Yes |
| Penstemon heterophyllus ‘Blue Spring’ |
'Blue Spring' foothill penstemon |
No |
| Penstemon heterophyllus ‘Catherine de la Mare’ |
'Catherine de la Mare' foothill penstemon |
Yes |
| Penstemon heterophyllus ‘Electric Blue’ |
'Electric Blue' foothill penstemon |
No |
| Penstemon heterophyllus ‘Margarita BOP’ |
'Margarita BOP' foothill penstemon |
No |
| Penstemon heterophyllus ‘GMR White’ |
'GMR White' foothill penstemon |
Yes |
| Penstemon incertus |
Mojave Beardtongue |
No |
| Penstemon laetus |
Mountain Blue Penstemon |
Yes |
| Penstemon newberryi |
Mountain pride penstemon |
Yes |
| Penstemon newberryi var. sonomensis |
Sonoma penstemon |
Yes |
| Penstemon palmeri |
Palmer's penstemon |
Yes |
| Penstemon procerus var. formosus |
Pincushion beardtongue |
No |
| Penstemon pseudospectabilis |
Rosy desert beardtongue |
Yes |
| Penstemon rostriflorus |
Bridge penstemon |
No |
| Penstemon rydbergii |
Rydberg's penstemon |
Yes |
| Penstemon speciosus |
Royal penstemon |
Yes |
| Penstemon spectabilis |
Showy penstemon |
Yes |
| Pentagramma triangularis |
Goldenback Fern |
No |
| Perideridia gairdneri |
Gairdner's Yampah |
Yes |
| Perideridia kelloggii |
Kellogg's Yampah |
Yes |
| Perideridia oregana |
Oregon Yampah |
Yes |
| Peritoma arborea |
Coast bladderpod |
Yes |
| Perityle incana |
Guadalupe Island Rock Daisy |
No |
| Petasites frigidus var palmatus ‘Golden Palms’ |
'Golden Palms' western coltsfoot |
No |
| Phacelia bolanderi |
Redwood phacelia |
Yes |
| Phacelia californica |
California Phacelia |
Yes |