A
ACUTE sharply pointed but not drawn out.
ADPRESSED lying flat for the length of the organ.
ADVENTITIOUS applied to roots, those which do not arise from the radicle but from another part of the plant, usually the stem.
AESTIVATION the manner in which the parts of the flower are folded before expanding.
AMPLEXICAUL stem-clasping.
ANNUAL a plant which completes its life cycle within a year.
ANNULUS in some Stapelieae, the portion of the corolla which forms a fleshy, raised ring.
ANTHER the part of the stamen which contains the pollen.
APICULATE tipped with an apiculus, a short, sharp point.
ARISTATE awned.
ASPERULOUS slightly rough with little points.
ATTENUATE tapered.
AWN a stiff hairy bristle.
AXIL the angle between the axis (stem or branch) and the part arising from it (leaf or bract).
AXILE belonging to the axis, as in axile placentation.
AXILLARY growing in an axil.
B
BIFID divided into two parts.
BILABIATE having two lips.
BISEXUAL having stamens and pistil in the same flower.
BRACT a modified leaf associated with the flowering part of the plant.
BRACTEATE possessing bracts.
BRACTEOLE a small bract.