Aquatic, Wetland and Invasive Plant Glossary

Aquatic, Wetland and Invasive Plant Glossary

habit search for term
- n. (L. habitus, condition, appearance, dress) the external appearance or way of growth of a plant, e.g. climbing, erect, bushy, etc.; the tendency of a plant to grow in a certain way.
habitat search for term
- n. (L. habitare, to inhabit) the locality or external environment in which a plant lives.
halophyte search for term
- n. (Gr. hals, salt; phyton, plant) any species capable of tolerating 0.5% or more NaCl.
haplophyte search for term
- n. (Gr. haploos, simple; eidos, form) having the number of chromosomes characteristic of the gametes for the organism.
hapteron search for term
- n. (Gr. haptein, to fasten) holdfast, specialized root-like projections that function to anchor a plant.
hastate search for term
- a. (L. hasta, spear) spear shaped, more or less triangular with the two basal lobes divergent.
hemicryptophyte search for term
- n. (Gr. hemi, half; kryptos, hidden; phyton, plant) a perennial plant having its overwintering buds located at the soil surface.
herb search for term
- n. (L. herba, green crop) any seed plant whose stem withers away to the ground after each season's growth; a seed plant with a green, non-woody stem.
herbage search for term
- n. (Fr. herbe, an herb) herbs collectively; the green foliage and juicy stems of herbs.
heterophyllous search for term
- a. (Gr. heteros, other; phyllon, leaf) the presence on a single individual of two or more distinct leaf shapes. These leaves may differ markedly in shape, yet have similar gross anatomical organization.
heterozygote search for term
- n. (Gr. heteros, other; zygon, yoke) an organism or cell having two different alleles at corresponding loci on homologous chromosomes.
hibernaculum search for term
- n. (L. hibernare, winter residence) a plant organ such as a bud, rhizome, turion, etc. which allows a plant to live through adverse conditions
hilum search for term
- n. (L. hilum, a little thing, a trifle) the scar on a seed marking the place where it was attached to the seed stalk.
hirsute search for term
- a. (L. hirsutus, bristly) set with bristles; hairy; shaggy.
hispid search for term
- a. (L. hispidus, rough) having stiff hairs, spines, or bristles.
hyaline search for term
- a. (Gr. hyalos, glass) of thin, membranous, transparent or translucent texture.
hybrid search for term
- n. (L. hibrida, cross) any cross-bred plant; heterozygote.
hydathodes search for term
- n. (Gr. hydatos, of water; hodos, way) an epidermal structure specialized for secretion, or for exudation, of water.
hydric search for term
- a. (Gr. hydor, water) characterized by an abundant supply of water.
hydrophily search for term
- n. (Gr. hydor, water; philein, to love) water pollination.
hydrophyte search for term
- n. (Gr. hydor, water; phyton, plant) an aquatic plant living on or in water.
hydropote search for term
- n. (Gr. hydropotes, water drinker) a cell or cell group found on the lower epidermis of some species such as Nymphaea. These cells are thought to function in the uptake of ions from the water.
hypanthium search for term
- n. (Gr. hypo, under; anthodes, like flowers) an expansion of the receptacle of a flower that forms a saucer-shaped, cup-shaped, or tubular structure (often simulating a calyx tube) bearing the perianth and stamens at or near its rim; it may be free from or united to the ovary.
hypertrophy search for term
- n. (Gr. hyper, above; trophe, nourishment) excessive growth due to increase in cell size.
hypogynous search for term
- a. (Gr. hypo, under; gyne, female) inserted below the gynoecium, and not adherent; immediately below oogonium; the ovary thus said to be superior. n. hypogyny.