Allium, 2 sp.

Amasonia latifolia

Anchusa

Andromeda arborea and other sp.

Andropogon alopecuides and ambiguum

Anemone hepatica, Thalictroides, virginiana, and pennsylvania

Angelica lucida and other sp.

Annona

Antirrhinum elatine

Apocynum cannabinum