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ocrea pl. ocreae var. ochrea |
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STRUCTURE |
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A tubular sheath that encircles a stem at a node, subtending a petiole; thought to have arisen evolutionarily by lateral fusion of two stipules; in Polygonaceae. |
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determinate |
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development |
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Having the terminal (central, apical, or distal) portion differentiating first and the lateral (peripheral, basal, or proximal) portions later, development thus proceeding sequentially downward or outward, growth of the whole thereby organizationally limited. |
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horizontal |
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orientation |
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Parallel to the horizon, perpendicular to the force of gravity. |
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ovary |
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STRUCTURE |
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The proximal portion of a pistil (either simple or compound) within which the ovules are borne; usually of somewhat greater diameter and/or volume than the remainder of the pistil. |
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diplotegium pl. diplotegia |
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nominative |
fruit |
A pyxis with accessory tissue adnate to the pericarp; derived from an inferior ovary. |
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flexuose |
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course |
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See flexuous. |
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cochlear |
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aestivation |
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Imbricate with one member larger than and exterior to the others, parallel to one that is internal to all the others, strongly incurved, and enclosing the others. |
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inaperturate |
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architecture |
pollen grain |
Lacking an aperture of any type. |
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umbo pl. umbines, umbos |
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FEATURE |
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A relatively small, rounded or conical, central protrusion upon an essentially round, broad face. |
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marcescent |
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duration |
structure |
Persistent in a distinctly withered condition. |
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brochidodromous |
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venation |
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Having a single median primary vein that branches to either side along its length, the secondary veins incurving strongly near but short of the margin, interconnecting serially, and forming a succession of marginal loops. |
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microgametophyte |
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PLANT |
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A gametophyte whose fertile organs (gametangia) are all antheridia. |
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ramal |
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position |
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Upon or otherwise directly associated with the stem branches. |
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convolute 3 |
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vernation |
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Each rolled laterally and wholly surrounded by and/or surrounding the one(s) next adjacent. |
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calyculate 1 |
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architecture |
capitulum (head) |
With the involucre subtended by a calyculus; in Asteraceae (Compositae). |
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irregular 2 |
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course |
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Deviating asymmetrically from a straight line. |
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perigynous |
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insertion |
perianth, calyx, corolla, androecium |
Having its proximal portion adnate to part of the length of the gynoecium, or fused in a separate floral cup that extends part of the length of the gynoecium, the free distal portion thus arising at a level between the base and apex of the gynoecium. See also epigynous, hypogynous. |
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enzymatic |
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exudation |
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Secreting a digestive exoenzyme; in carnivorous plants. |
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mucilage |
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substance |
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A slimy exudate. |
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carinal |
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aestivation |
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Having the petals of the keel (carina) enclosing the others. |
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spicy |
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odor |
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Pleasantly pungent, reminiscent of spices. |
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appendage |
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STRUCTURE |
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Any subordinate structure ontogenetically derived from and associated with a given organ or part. |
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gummy |
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texture |
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Highly viscous and sticky, liquid or more or less deformably solid, sometimes more or less elastic. |
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neotenous |
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maturation |
structure |
Retaining at maturity attributes that are usually restricted to the juvenile stage. |
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ridge |
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FEATURE |
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A very narrow, elongate, relatively low protrusion; esp. on fruits in Apiaceae (Umbelliferae). |
