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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

Obovate - Inversely ovate, with the narrower end of the leaf blade toward the branch.

Alternate - Placed singly at different heights on the stem; not opposite or whorled.

Node - The place on a stem where leaves or branches normally originate; a swollen or knoblike structure.

Appressed - Pressed or lying flat against something.

Toothed - Said of petals or leaves having margins more or less sharply indented.

Androecium - Collective term for the stamens of one flower.

Denticulate - Finely toothed.

Zygote - A reproductive cell formed by the fusion of two gametes.

Tripinnate - A bipinnate leaf whose pinnae are divided into a third set of leaflets.

Rosette - An arrangement of leaves radiating from the stem at a nearly common level, frequently at or just above the ground line.

Part Shade - Part shade is classified as a garden receiving 4-6 hours of sun with dappled shade from trees or as approximately 4 hours of sun with shade either in the morning or afternoon. Part shade and part sun are used interchangeably by the horticulture industry.

Halophyte - A plant which tolerates a salty environment.

Leaflet - A division or part of a compound leaf.

Perianth - Collective term for petals and sepals (corolla and calyx).

Subshrub - Shorter than a shrub, often weakly woody and persisting for only a few years.

© 2014 Lady Bird Johnson Wildflower Center