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BOTANICAL GLOSSARY

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

Florets - Small or reduced flowers.

Involucre - A whorl of distinct or united leaves or bracts beneath a flower or cluster of flowers commonly found especially on species in Asteraceae but also in Apiaceae, Dipsacaceae and Polygonaceae. Also a bract or bract pair subtending the inflorescence of some members of Betulaceae, especially Carpinus and Corylus.

Peduncle - The stalk of a solitary flower or of a cluster of flowers.

Lenticel - A corky pore in young bark.

Oblique - Leaf shows asymmetry at the base.

Rhizobia - Soil-borne bacteria which form nitrogen-rich root nodules.

Culm - The hollow stem of grasses and bamboos.

Appressed - Pressed or lying flat against something.

Taproot - A single main root that grows vertically into the ground.

Branchlet - A small branch.

Bract - A reduced or modified leaf occurring at the base of a flower or group of flowers. Bracts are sometimes arranged in rows, like shingles on a roof, usually closely cupping the blossoms of Asteraceae (Sunflower Family); cf. Phyllary. Sometimes brightly colored or petallike, as in Castilleja spp. (paintbrush), or threadlike, as in Daucus carota (Queen Anne's Lace). ...

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

Caudate - Tapering gradually into a long taillike tip

Phyllary - A term sometimes used for individual bracts below the head of flowers in Asteraceae (Sunflower Family), so designated to avoid confusion with bracts on the flower stem.

Lyrate - A pinnately divided leaf with an enlarged terminal lobe.

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