Alveolate, honeycomb-like.
Ament, the scaly spike of trees like the Birch and Willow, [75].
Amentaceous, catkin-like, or catkin-bearing.
Amorphous, shapeless, without any definite form.
Amphicarpous, producing two kinds of fruit.
Amphigastrium (plural, amphigastria), a peculiar stipule-like leaf of Liverworts.
Amphitropous ovules or seeds, [111].
Amphora, a pitcher-shaped organ.
Amplectant, embracing. Amplexicaul (leaves), clasping the stem by the base.
Ampullaceous, swelling out like a bottle or bladder (ampulla).