Abelmoschus esculentus

gumbo, lady's finger, okra

Abelmoschus manihot

sunset muskmallow

Abelmoschus moschatus

musk okra

Abies alba

silver fir

Abies balsamea

balsam fir

Abies lasiocarpa

balsam fir, Rocky Mountain fir, subalpine fir

Abies nordmanniana

Abies spp

Abrus cantoniensis

Abrus precatorius

crab's eye, jequerity, rosary pea

Abutilon coahuilae

Abutilon hirtum

Florida Keys Indian mallow

Abutilon indicum

monkeybush

Acacia abyssinica

Acacia albida

Acacia aroma

Acacia chundra

Acacia concinna

Acacia macracantha

long-spine acacia, porknut

Acacia nilotica

gum arabic tree

Acacia pennata

Acacia pruinescens

Acalypha australis

Asian copperleaf, Australian acalypha

Acalypha brachiata

Acantholimon libanoticum

Acantholimon lycopodioides

Acanthus syriacus

Syrian acanthus

Acer buergerianum

trident maple

Acer negundo

ash-leaf maple, ashleaf maple, box elder

Acer nigrum

black maple, black sugar maple, hard maple

Acer oblongum

Acer obtusatum

Acer pensylvanicum

moosewood, striped maple

Acer rubrum

red maple

Acer saccharinum

silver maple

Acer saccharum

sugar maple

Acer spicatum

moose maple, mountain maple

Achillea falcata

Achillea millefolium

bloodwort, carpenter's weed, common yarrow

Achillea sibirica

Siberian yarrow

Achillea wilhelmsii

Achyranthes aspera

devil's horsewhip

Achyranthes bidentata

pig's knee

Achyrocline hallii

Aciotis rubricaulis

Acmella ciliata

Acmella oleracea

Acmella paniculata

Aconitum carmichaeli

Aconitum carmichaelii

Carmichael's monkshood

Aconitum gammiei

Aconitum heterophyllum

Aconitum jilongense

Aconitum racemulosum

Aconitum richardsonianum

Aconitum spicatum

Aconitum vilmorinianum

Aconitum violaceum

Aconogonon alaskanum

Alaska wild rhubarb

Aconogonum tortuosum