Nerve A slender rib or vein, especially if unbranched. This feature helps describe plant form, function, or identification.
Arboretum Botanical Glossary
A botanical reference guide of morphological terms, plant structures, propagation techniques, and campus flora definitions.
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Explore terms organized by botanical structure, morphology, and arboricultural concepts.
Node A point on a stem where leaves are or were attached Did you know? Plant cuttings root best when a node is included because nodes contain active growth tissue.
Nut A dry, 1-celled, 1-seeded fruit that does not split open on its own, having a hard and bony shell, sometimes with a fibrous or slightly fleshy outer covering. Did you know? Peanuts are legumes and almonds are seeds inside drupes; true botanical nuts include acorns, hazelnuts, and chestnuts.
Nutlet A small nut; one of the lobes or sections of the mature ovary of some members of Boraginaceae, Verbenaceae and Labiatae (Laminaceae)
Obclavate Club shaped, with the attachment at the broad end. This feature helps describe plant form, function, or identification.
See Obconic
Oblanceolate Shaped like a long point, with the narrow end at the point of attachment. The inverse of lanceolate.
Oblique Slanting. This feature helps describe plant form, function, or identification.
Obtuse Blunt. This feature helps describe plant form, function, or identification.
often on very poor soil A type of small green plant, sometimes only 1/16 (2 mm.) and mostly less than 2" (5 cm.) high. Mosses have tiny stems and leaves and reproduce by means of spores instead of seeds. They grow in moist locations