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Glossary of commonly used botanical terms and their definitions. Use the search bar below to look up a botanical term.

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15 Random Botanical Terms

Oblique - Leaf shows asymmetry at the base.

FAC - Faculative - Hydrophyte. Occurs in wetlands and non-wetlands.

Pinnately Compound - Leaves with leaflets opposite each other on each side of the midrib. They may be oddly pinnate, ending with a leaflet at the tip, or evenly pinnate, with no leaflet at the end. These leaflets may be twice compound (Bipinnate), like the leaves on sensitive briars (Mimosa spp.).

Special Value to Native Bees - Recognized by pollination ecologists as attracting large numbers of native bees.

Special Value to Honey Bees - Identified by beekeepers and pollination biologists as an important pollen or nectar source (honey plant) for honey bees.

Vein - A rib of tissue, usually in a leaf.

Parallel - A leaf whose veins run in parallel from the stem.

Acute - Pointed apex with margins that form an angle between 45 and 90 degrees.

Thorn - A sharp-pointed structure formed by a modified branch.

Lobe - Part or segment of a flower or leaf; a deep indentation that does not break the continuity of the structure.

FAC* - Faculative - Hydrophyte. Occurs in wetlands and non-wetlands. Occurs only in the South Pacific Islands subregion.

Radial asymmetry - The flower can be cut into two equal halves in many ways, provided that the plane of cutting passes through the center.

Beard - A tuft or line of hairs, as on certain petals.

Cyme - A usually flattish inflorescence in which the central or terminal flower matures first.

Anther - The specialized, pollen-bearing structure of a plant's flower.