galea
Helmet- or hood-shaped.
galeate
Shaped like a helmet or hood.
gametophyte
A plant that produces sperm and egg cells and in which sexual reproduction takes place - in ferns this is known as the prothallus.
gene pool
The mixture of all genes and gene variations of a group or population.
genetic diversity
The variety of genes in a plants or populations.
genetic variation
Differences displayed by individuals within a plant which may be favoured or eliminated by selection.
genus
A taxonomic rank of closely related forms that is further subdivided in to species (plural = genera). In a scientific name (e.g., Sicyos australis), the first word is the genus, the second the species.
gibbous
Swollen or enlarged on one side, as in a gibbous moon.
glabrescent
Lacking hair or a similar growth or tending to become hairless.
glabrous
Without or devoid of hairs, smooth.
gland
A structure that secretes a sticky or oily substance.
glandular
A structure that secretes a sticky or oily substance.
glaucous
Covered with a fine, waxy, removable powder that imparts a white or bluish cast to the surface.
gley
A soil prone to seasonal inundation.
globose
Globe-shaped.
glume
One of two bracts at the base of a grass spikelet.
groundwater
Groundwater is the water beneath the surface that can be collected with wells, tunnels, or drainage galleries, or that flows naturally to the earth’s surface via seeps or springs. Groundwater is the water that is pumped by wells and flows out through springs.
gynodioecious
A species population containing plants that produce bisexual (perfect) flowers, and plants that produce only female (pistillate) flowers.
gynoecium
The female reproductive organs of a flower; the pistil or pistils considered as a group. Means literally “womans house” i.e., the overall structure that contains the female sex organs.
gymnosperm
Plants in the class Gymnospermae that have seeds which are not enclosed in an ovary.
geniculate
Abrubtly bent.
