Category: H
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Hydrophyte
In Raunkiaer’s system, plant with growing points surviving adverse seasons as resting buds underwater and in mud/underground. A plant surviving adverse seasons with resting buds under water and underground in mud. In botany, a plant that grows wholly or partly submerged in water.
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Hydrophilous
Pollination effected by water; Used for ‘water-loving’ in general [this use not recommended].
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Hydrogeophyte
In Raunkiaer’s system, plant with growing points surviving adverse season as resting buds underwater. A plant surviving adverse seasons with its resting buds under water.
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Hydrogamous
(Of flowers) with pollination effected by water, as in Najadaceae.
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Hydrochory
Dispersal of disseminules or diaspores (i.e. seeds, fruits, other floating or water-borne parts) by water.
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Hydathodes
Water-glands, organs extruding water or fluid. Glands that exude water, often seen as broadened veins, a term frequently used in ferns.
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Hybridisation
Crossing between two different species. Formation of duplexes by RNA and/or DNA sequences (can be DNA-DNA, RNA-RNA, or DNA-RNA). The process of crossing between two (or more) species.
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Hybrid-derivative
An individual or population derived from hybrids between two taxa.
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Hybrid swarm
Population showing characters of both parent species in varying balance.
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Hyaline
Almost transparent. A normal glassy appearance, such as hyaline cartilage. Tissue material that has a glass-like appearance when stained and viewed under the microscope. It occurs in a variety of tissues and diseases, particularly acute respiratory distress syndrome (ARDS), hyaline degeneration of arterioles, and alcoholic liver disease.