Apocynum androsæmifolium, iii. [26].
—— cannabinum, i. [131]. ii. [131].
Arctium lappa, burdock, iii. [27].
Ardea Canadensis, ii. [72].
Arum Virginium, Virginian wake-robin, i. [125].
Arundo arenaria, iii. [210].
Asclepias Syriaca, iii. [28].
Asp, Pensylvanian, ii. [125].
Azalea lutea, i. [66].
—— nudiflora, white honey-suckle, or May-flower, ii. [169].