| Abutilon palmeri |
Indian mallow |
Yes |
| Acaena pinnatifida var. californica |
Argentinian biddy biddy |
No |
| Acalypha californica |
California Copperleaf |
Yes |
| Acer circinatum |
Vine maple |
No |
| Acer macrophyllum |
Big Leaf Maple |
Yes |
| Acer negundo |
Box elder |
Yes |
| Achillea millefolium |
Yarrow |
Yes |
| Achillea millefolium ‘Island pink’ |
'Island Pink' Yarrow |
No |
| Achillea millefolium Placer County |
Yarrow, Placer County form |
No |
| Achillea millefolium Santa Clara County |
Yarrow, Santa Clara County form |
Yes |
| Achyrachaena mollis |
Blow Wives |
No |
| Acmispon argophyllus var argenteus |
Channel Island Silver Lotus |
Yes |
| Acmispon glaber |
Deer Weed |
Yes |
| Acmispon grandiflorus |
Large Leaved Lotus |
Yes |
| Adenostoma fasciculatum |
Chamise |
No |
| Adenostoma fasciculatum ‘Nicolas’ |
'Nicolas' Prostrate chamise |
Yes |
| Adenostoma sparsifolium |
Red shanks |
Yes |
| Adiantum aleuticum |
Five finger fern |
No |
| Adiantum capillus-veneris |
Southern maiden hair |
Yes |
| Adiantum x tracyi |
Tracy's maidenhair fern |
No |
| Aesculus californica |
California buckeye |
No |
| Aesculus californica Santa Clara County |
California buckeye Santa Clara County |
Yes |
| Agave deserti |
Desert agave |
Yes |
| Agave utahensis |
Utah agave |
Yes |
| Allium acuminatum |
Taper Tipped Onion |
No |
| Allium amplectens |
Narrow Leaved Onion |
No |
| Allium fimbriatum |
Fringed onion |
No |
| Allium hyalinum |
Glassy onion |
No |
| Allium unifolium |
One leaf onion |
No |
| Alnus rhombifolia |
White Alder |
Yes |
| Ambrosia chamissonis |
Silver Beachweed |
Yes |
| Amelanchier alnifolia |
Saskatoon serviceberry |
No |
| Amelanchier pallida |
Pale serviceberry |
No |
| Amelanchier utahensis |
Western Serviceberry |
No |
| Amorpha californica |
California false indigo |
No |
| Amorpha fruticosa |
Western false indigo |
Yes |
| Anaphalis margaritacea |
Pearly Everelasting |
Yes |
| Anemonopsis californica |
Yerba mansa |
Yes |
| Angelica californica |
California Angelica |
No |
| Angelica hendersonii |
Coast Angelica |
No |
| Antennaria rosea |
Rosy Pussytoes |
No |
| Anthoxanthum occidentale |
Vanilla grass |
Yes |
| Antirrhinum multiflorum |
Chaparral snapdragon |
Yes |
| Aquilegia formosa |
Western Columbine |
Yes |
| Aquilegia pubescens |
Sierra Columbine |
No |
| Aralia californica |
Elk Clover |
No |
| Arbutus menziesii |
Pacific madrone |
Yes |
| Arctostaphylos andersonii |
Heartleaf manzanita |
Yes |
| Arctostaphylos auriculata |
Mount Diablo manzanita |
No |
| Arctostaphylos auriculata Knobcone Point |
'Knobcone Point' Mount Diablo manzanita |
No |