| Penstemon newberryi var. sonomensis |
Sonoma penstemon |
No |
| Penstemon palmeri |
Palmer's penstemon |
No |
| Penstemon procerus var. formosus |
Pincushion beardtongue |
No |
| Penstemon pseudospectabilis |
Rosy desert beardtongue |
No |
| Penstemon rostriflorus |
Bridge penstemon |
Yes |
| Penstemon rydbergii |
Rydberg's penstemon |
No |
| Penstemon speciosus |
Royal penstemon |
No |
| Penstemon spectabilis |
Showy penstemon |
Yes |
| Pentagramma triangularis |
Goldenback Fern |
No |
| Perideridia gairdneri |
Gairdner's Yampah |
No |
| 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 |
| Phacelia campanularia |
Desert bluebells |
No |
| Phacelia imbricata |
Imbricate Phacelia |
No |
| Phacelia nemoralis |
Woods Phacelia |
No |
| Phacelia tanacetifolia |
Tansy leafed phacelia |
No |
| Philadelphus lewisii |
California Mock Orange |
Yes |
| Philadelphus lewisii ‘Covelo’ |
'Covelo' California Mock Orange |
No |
| Philadelphus lewisii ‘Goose Creek’ |
'Goose Creek' California Mock Orange |
Yes |
| Philadelphus lewisii ‘Marjorie Schmidt’ |
'Marjorie Schmidt' California Mock Orange |
No |
| Philadelphus microphyllus ‘Desert Snow’ |
'Desert Snow' littleleaf mock orange |
Yes |
| Phyla nodiflora |
Common lippia |
Yes |
| Phyla nodiflora Pink |
Common lippia Pink Form |
No |
| Physocarpus capitatus |
Ninebark |
Yes |
| Physocarpus capitatus ‘Tilden Park’ |
'Tilden Park' Ninebark |
Yes |
| Pinus coulteri |
Coulter pine |
Yes |
| Pinus jeffreyi |
Jeffrey pine |
Yes |
| Pinus ponderosa |
Ponderosa Pine |
Yes |
| Pinus radiata |
Monterey Pine |
Yes |
| Pinus sabiniana |
Gray Pine |
Yes |
| Pinus torreyana |
Torrey pine |
Yes |
| Platanus racemosa |
Western Sycamore |
Yes |
| Platystemon californicus |
Cream cups |
No |
| Pluchea odorata |
Sweetscent |
Yes |
| Poa secunda |
Pine Bluegrass |
Yes |
| Poa secunda ssp. juncifolia |
Rush Bluegrass |
No |
| Polemonium carneum |
Royal jacob's ladder |
Yes |
| Polemonium pulcherrimum |
Sky Pilot |
No |
| Polypodium californicum |
California Polypody |
No |
| Polypodium californicum Sarah Lyman |
California Polypody 'Sarah Lyman' |
Yes |
| Polypodium calirhiza |
Nested Polypody |
No |
| Polypodium glycyrrhiza |
Licorice Fern |
No |
| Polypodium glycyrrhiza Lawrence Crocker |
Licorice Fern 'Lawrence Crocker' |
Yes |
| Polypodium scouleri |
Leather Leaf Fern |
No |
| Polystichum munitum |
Western Sword Fern |
Yes |