Aquatic, Wetland and Invasive Plant Glossary
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Click one of the letters above to be taken to a page of all terms beginning with that letter.
- 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.