Androgynous (androgynus). Containing both male and female flowers.
Androphore (androphorum). An elongation of the receptacle below the stamens.
Annual (annuus). Terminating its whole cycle of life within one year.
Annular (annularis). Ring-shaped.
Anterior (anticus). Placed in front; or turned away from the axis upon which the organ is inserted.
Anther (anthera). The thickened upper part of the stamen, which encloses the pollen. It usually consists of two halves (cells) containing two pollen-sacs each and opening by a common slit or pore.
Appressed (appressus). Pressed close.
Areole (areola). A space marked out on a surface.
Aril (arillus). An expansion of the funicle or the adjoining part of the testa, more or less enveloping the seed.
Ascending (ascendens). Directed upwards. An ascending stem is more or less prostrate at the base, then erect; an ascending ovule is attached somewhat above the base.