Asymmetrical (asymmetricus). Which cannot be divided into two or more similar parts.
Auricle (auriculus). An earlet, i.e., a small roundish lateral appendage of a leaf or leaf-like organ.
Awn (arista). A strong bristle-like appendage.
Axil (axilla). The upper angle between a leaf and the stem from which it springs.
Axile (axilis). Placed in the axis.
Axillary (axillaris). Placed in the axil of a leaf.
Axis (axis). The line round which an organ is developed; or the part of the plant on which other parts are attached, especially the stem.
Baccate (baccatus). Berry-like.
Barbed (glochidiatus). Beset with hairs or spines directed backwards.