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hemispheric(al) |
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solid shape |
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Half-spheric(al); broadest at the base and uniformly rounded to the apex, circular in any transverse section, and half-circular in any median longitudinal section. |
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tortuous |
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course |
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Strongly irregular with sharp bends and/or curves. |
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prominence |
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CHARACTER |
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Elevation or depression of a discrete feature relative to the surrounding surface. |
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stigmatic |
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habit |
trichome |
Borne on the surface of the stigma and serving to hold pollen deposited there, variously shaped, often glandular, sometimes contractile. |
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basal cell |
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STRUCTURE |
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Any of the ring of cells forming the lowermost (proximal) portion of an antheridial wall. |
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opposite 1 |
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arrangement |
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Disposed in pairs along the axis, the members of each pair inserted at the same level across from one another. |
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digamous |
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reproduction |
inflorescence |
Bearing flowers of two differing sexual constitutions; esp. in Asteraceae (Compositae). |
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absent |
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presence |
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Not occurring within the context in point. |
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flanged |
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plane shape |
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Having a relatively broad circumferential rim or ridge that protrudes laterally. |
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clinandrium pl. clinandria |
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FEATURE |
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The cavity in a floral column (gynostemium) within which the anthers are borne. |
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bigeminate |
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architecture |
foliaceous structure |
Compound with two orders of leaflets, each order bifoliolate. |
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semicircular |
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arrangement |
bundle scars |
Forming an incomplete circle, like the letter C. |
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divaricate |
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arrangement |
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Strongly divergent. |
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branched 2 |
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architecture |
laminar veinlet |
Dividing within the areole, each branch ending blindly. |
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inflorescence 2 |
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STRUCTURE |
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The basic architectural unit of the flower-producing portion of a plant; comprising one or more flowers, their associated supporting axes (peduncles, main axes, branches and pedicels), if any, and the appendages thereto (bracts, bractlets or bracteoles or prophylls, involucres, involucels, and glumes), if any; delimited by the insertion or gradation of a single peduncle, peduncle cluster, pedicel, pedicel cluster, or sessile flower, as the case may be, directly upon or into some proximal vegetative structure not of one of these types; depending upon the type(s) of flowers included, may be bisexual (all flowers bisexual), staminate (all flowers staminate), pistillate (all flowers pistillate), sterile (all flowers sterile), or mixed (two or more types of flowers present); most appropriately described using nominative terms. |
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dyad |
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STRUCTURE |
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A pair of coherent pollen grains shed as a unit. |
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branchlet |
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STRUCTURE |
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A branch of the highest or ultimate order. |
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infrabracteal |
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insertion |
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Upon the axis directly below a bract insertion. |
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dyadal |
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arrangement |
pollen |
Cohering and shed in pairs, each tetrad having separated into halves. |
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funicular |
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derivation |
aril |
Produced from or a modification of the funiculus (funicle). |
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caducous |
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duration |
structure |
Deciduous upon or immediately after emergence, with little or no evident senescence beforehand. |
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sinuate |
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margin |
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Having regular, curved, smoothly connected, alternating concavities and convexities. See also repand. |
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venation |
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CHARACTER |
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Configuration of laminar vasculature as to its hierarchical organization and the dispositions of component orders. For descriptive purposes, the orders of vasculature are ranked with reference only to the lamina in point, irrespective of rank within any larger vascular context. |
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endocarp |
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STRUCTURE |
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The innermost tissue layer of a pericarp. |
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anisopetalous |
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architecture |
flower, perianth, corolla |
Having petals unequal in size and/or shape. |
