Abortion, the imperfect formation or the non-formation of some part.

Abrupt, suddenly terminating; as, for instance,

Abruptly pinnate, pinnate without an odd leaflet at the end, [58].

Acantho-, spiny.

Acaulescent (acaulis), apparently stemless; the proper stem, bearing the leaves and flowers, being very short or subterranean.

Accessory, something additional; as Accessory buds, [30], [31]; Accessory fruits, [118].

Accrescent, growing larger after flowering.

Accrete, grown to.

Accumbent, lying against a thing. The cotyledons are accumbent when they lie with their edges against the radicle, [128].

Acephalous, headless.