annual. A plant that naturally does not live more than one year, as garden bean, pea, Indian corn, buckwheat, cowpea.
anther. The knob or enlargement of the stamen, bearing the pollen.
antheridium. The male or sperm-cell organ, such as occurs on the prothallus of ferns and similar plants. See [archegonium].
apetalous. Without petals.
apical. At the top.
archegonium. The female or egg-cell organ on the prothallus of ferns and related plants. See [antheridium].
assimilation. The building up of protoplasm from the materials elaborated in the plant.
axil. The angle or place just above the petiole of a leaf (or pedicel of a flower) where it joins the twig.
berry. In botany, a fleshy pericarp containing a number of seeds, as current, orange, tomato, grape, cranberry, but not strawberry, blackberry, raspberry, or mulberry.
biennial. A plant that lives two years. It usually blooms the second year.