| Abronia latifolia |
Sand Verbena |
Yes |
| Abutilon palmeri |
Indian mallow |
Yes |
| Acaena pinnatifida |
Argentinian biddy biddy |
Yes |
| Acaena pinnatifida var. californica |
Argentinian biddy biddy |
Yes |
| Acalypha californica |
California Copperleaf |
Yes |
| Acer circinatum |
Vine maple |
No |
| Acer macrophyllum |
Big Leaf Maple |
Yes |
| Acer macrophyllum Santa Clara County |
Big Leaf Maple Santa Clara County |
No |
| Acer negundo |
Box elder |
Yes |
| Achillea millefolium |
Yarrow |
Yes |
| Achillea millefolium ‘Island Pink’ |
'Island Pink' Yarrow |
Yes |
| Achillea millefolium ‘Lake County’ |
'Lake County' Yarrow |
Yes |
| Achillea millefolium ‘Sonoma Coast’ |
'Sonoma Coast' Yarrow |
Yes |
| Achillea millefolium Santa Clara County |
Yarrow, Santa Clara County form |
No |
| Achyrachaena mollis |
Blow Wives |
No |
| Acmispon argophyllus var argenteus |
Channel Island Silver Lotus |
No |
| Acmispon dendroideus var. dendroideus |
Island Broom |
Yes |
| Acmispon glaber |
Deer Weed |
Yes |
| Acmispon grandiflorus |
Large Leaved Lotus |
No |
| Acmispon heermannii |
Woolly Lotus |
Yes |
| Actaea rubra |
Red Baneberry |
No |
| Adenostoma fasciculatum |
Chamise |
Yes |
| Adenostoma fasciculatum ‘Nicolas’ |
'Nicolas' Prostrate chamise |
No |
| Adenostoma fasciculatum ‘Santa Cruz Island’ |
'Santa Cruz Island' Chamise |
Yes |
| Adenostoma fasciculatum Santa Clara County |
Chamise Santa Clara County |
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 |
Yes |
| Aesculus californica Santa Clara County |
California buckeye Santa Clara County |
Yes |
| Agastache urticifolia |
Nettle Leaf Giant Hyssop |
No |
| Agave deserti |
Desert agave |
No |
| Agave shawii |
Shaw's agave |
Yes |
| Agave utahensis |
Utah agave |
Yes |
| Allium acuminatum |
Taper Tipped Onion |
Yes |
| Allium amplectens |
Narrow Leaved Onion |
Yes |
| Allium crispum |
Crinkled Onion |
No |
| Allium fimbriatum |
Fringed onion |
No |
| Allium hyalinum |
Glassy onion |
Yes |
| Allium unifolium |
One leaf onion |
Yes |
| Alnus rhombifolia |
White Alder |
No |
| Alnus rubra |
Red Alder |
Yes |
| Ambrosia chamissonis |
Silver Beachweed |
Yes |
| Amelanchier alnifolia |
Saskatoon serviceberry |
Yes |
| Amelanchier pallida |
Pale serviceberry |
No |
| Amelanchier utahensis |
Western Serviceberry |
No |
| Amorpha californica |
California false indigo |
No |
| Amorpha fruticosa |
Western false indigo |
No |
| Anaphalis margaritacea |
Pearly Everlasting |
Yes |