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AraceaeArum Family. Comprised of 140 genera and about 4,075 species. Members of this family are characterized by flowers that are borne on a type of inflorescence called a spadix. The spadix is usually accompanied by, and sometimes partially enclosed in, a spathe (leaf-like bract). | |
ArilFleshy seed cover. | |
Asclepiadaceae(now known as Asclepiadoideae) Milkweed Subfamily. Comprised of more than 214 genera and about 2,400 species of tropical herbs or shrubby climbers, rarely shrubs or trees. Members of this family have milky sap, flowers with five united petals, pod like fruit, and, usually, tufted seeds. | |
Asteraceae(formerly Compositae) Aster, Daisy or Composite Family. Comprised of more than 1,620 genera and 23,600 species of herbs, shrubs and trees. It is considered the largest plant family. Members of this family usually have daisy-type flowers and are not big trees or aquatic. | |
AwnA bristlelike appendage of a plant, especially on the glumes of grasses. | |
AxilThe angle between the leafstalk and the stem that bears it. | |