Category: H
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Homochlamydeous
With a perianth of similar segments, i.e. not clearly divided into calyx and corolla parts.
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Holo., holotype
(In nomenclature) a single specimen (usually all the material on one herbarium sheet, possibly part of a sheet or a single specimen spread over several sheets, sometimes an illustration) representing the nomenclatural type of the name of a taxon; A specimen used to assign a name to a taxon in cases of ambiguity; The voucher…
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Hoary
Covered with a thin white or grey pubescence resembling frost. Greyish-white.
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Hispidulous
Minutely hispid.
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Hispid
With long stiff hairs or bristles, more sharply bristly than hirsute. Many, but not all, early authors (including Linnaeus) also thought the hairs of hispid plants to be fragile.
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Hirtellous
Softly or minutely hirsute or hairy.
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Hirsute
With rather coarse stiff hairs. With rough or coarse, more or less erect hairs. With a lot of hair.
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Hippocrepiform
Horseshoe-shaped.
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Hip
(In Rosa) the ‘false fruit’ developed from the swollen hypanthium. A vase-like leathery hypanthium containing several achenes; restricted to the rose. A fleshy, berrylike fruit (as in some members of the Rose Family). A false fruit developed from the hypanthium (floral) in Rosa (Rosaceae). The lateral prominence of the pelvis from the waist to the…
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Hilum
The scar left on the seed from its attachment point to the placenta. The scar of the seed at its point of attachment. In botany, the central part in a starch grain, surrounded by layers of starch. A hollow where blood vessels or nerve fibres enter an organ such as a kidney or lung. An…