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Glossary of commonly used botanical terms and their definitions. Use the search bar below to look up a botanical term.
15 Random Botanical Terms
Ray - The outer irregular flowers in the heads of many Compositae (Sunflower Family). Each has a single, tongue-shaped corolla.
Obtuse - Blunt or rounded at the tip.
Tubercle - A more or less pyramidal knob rising from the stem surface of a cactus and having an areole on or near its summit.
Orbicular - Circular or nearly so.
Scape - A naked flower stem rising from the ground.
Sinus - The depression or recess between two lobes.
Threatened - An animal or plant species likely to become endangered within the foreseeable future throughout all or a significant portion of its range.
Compound leaf - A leaf that is completely separated into two or more leaflets.
Oval - Having the general form, shape, or outline of an egg; egg-shaped.
Endemic - Occurring naturally only in a single geographic area.
Thorn - A sharp-pointed structure formed by a modified branch.
Stolon - A horizontal above ground stem.
Corymb - A flat-topped or convex flower cluster, with the lower or outer stems longer; the flowers on these stems open first.
Alternate - Placed singly at different heights on the stem; not opposite or whorled.
Sessile - Lacking a stalk of any kind: a flower without a pedicel or a leaf without a petiole.