GLOSSARY OF BOTANICAL TERMS 



INVOLUCRE. A whorl of bracts, subtending a flower or flower cluster. 



INVOLUTE. Rolled inward. 



IRREGULAR (FLOWER). Showing inequality in the size, form or union of 

 its similar parts. 



KEEL. A central dorsal ridge ; the two anterior united petals of a papilio- 

 naceous flower. 



LANCEOLATE. Considerably longer than broad, tapering upward from the 

 middle or below. 



LEAFLET. One of the divisions of a compound leaf. 



LEGUME. A simple dry fruit, dehiscent along both sutures; is the charac- 

 teristic fruit of the Pea Family. 



LIMB. The expanded part of a petal, sepal or gamopetalous corolla. 



LINEAR. Elongated, narrow with sides nearly parallel. 



LIP. Each of the upper and lower divisions of a bilabiate corolla or calyx. 



LOBE. Any segment of an organ. 



LOBED. Divided into lobes. 



MESOCARP. The middle layer of a pericarp. 



MIDVEIN. The central vein or rib of a leaf or other organ. 



MONADELPHOUS. Applied to stamens united by their filaments into a tube 

 or column. 



MONCECIOUS. With stamens and pistils in separate flowers on the same 

 plant. 



MUCRONATE. With a short, sharp, abrupt tip. 



NAKED. Lacking organs or parts which are normally present in related 

 species. 



NATURALIZED. Plants not indigenous to the region, but so firmly estab- 

 lished as to have become part of the flora. 



NODE. The place upon a stem which normally bears a leaf or a whorl of 

 leaves. 



NUT. An indehiscent one-seeded fruit with a hard or bony pericarp. 



NUTLET. Diminutive of nut. 



OBCONIC. Inversely cone-shaped. 



OBCORDATE. Inversely heart-shaped. 



OBLANCEOLATE. Inversely lanceolate. 



OBLONG. Considerably longer than broad and with nearly parallel sides. 



OBOVATE. Inversely ovate. 



OBTUSE. Blunt or rounded at the end. 



ORBICULAR. Approximately circular. 



OVAL. Broadly elliptical. 



OVARY. The ovule-bearing part of the pistil. 



OVATE. In outline like a longitudinal section of a hen's egg. 



OVULE. The rudimentary seed. 



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