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Arceuthobium campylopodum subsp. californicum

Arctostaphylos campbelliae

Arctostaphylos coloradensis

Arctostaphylos hookeri subsp. franciscana

Arctostaphylos nummularia subsp. nummularia

Armeria maritima

Marsh daisy

Asclepias uncialis subsp. ruthiae

Asimina longifolia

Astragalus accumbens

Astragalus anxius

Astragalus preussii var. cutleri

Astragalus physodes subsp. physodes

Lappula anisacantha

Asystasia gangetica subsp. gangetica

Trigonostemon elmeri

Atriplex alaskensis

Atriplex cuneata subsp. cuneata

Atriplex depressa

Atriplex hillmanii

Atriplex minuscula