GLABRESCENT: Becoming glabrous.
GLABROUS: Hairless; smooth. Also glabrate.
GLADIATE: Sword-shaped; ensiform.
GLAND: Any secreting organs of plants or of gland-like bodies.
GLANDULAR: 1. Resembling or pertaining to a gland. 2. Bearing glands. 3. Derived from glands. Also glandulous.
GLANS: A nut seated in or enclosed by an involucre.
GLAUCESCENT: Slightly glaucous.
GLAUCOUS: 1. Blue-green, blue-gray, gray, or pale yellow-green color. 2. Having a waxy or powdery, bluish-white or bluish-gray bloom that can be rubbed off (i.e. glaucous plums or grapes).
GLEY SOIL: A layer of soil that has turned gray because of lack of oxygen and excessive water.
GLOBOSE: Spherical, or nearly so.
GLOCHIDIATE: Barbed at the tip. Also glochideous.
GLOCHIDS: Barbed bristly hairs or spines, often very fine and easily detached, on an Opuntia cactus.
GLOMERATE: Compactly clustered.
GLOMERULATE: Arranged in small, compact clusters. Also glomerulose.
GLOMERULE: A compact flower cluster that forms a head, as in the flowering Dogwood, Cornus florida.
GLUMACEOUS: Glume-like; having glumes; chaffy.
GLUME: A chaffy bract as in the Gramineae (grass family) and related plants; especially an empty bract at the base of a grass spikelet.
GLUMIFEROUS: Having glumes.
GLUTINOUS: Sticky.