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haustorium pl. haustoria |
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STRUCTURE |
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An absorbing and anchoring organ, often root-like, excrescent from a vegetative part of a parasitic or hemiparasitic plant, by which the plant communicates intimately with and derives sustenance and support from its host plant, into whose tissues the haustorium intrudes. |
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hysteranthous |
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maturation |
non-floral structure, esp. leaf |
Maturing later than the flowers. |
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spike |
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nominative |
inflorescence |
An elongate, determinate or usually indeterminate axis bearing sessile flowers inserted singly along it, unbranched or sometimes bearing lateral branches of the same nature. |
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stilt root |
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STRUCTURE |
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A relatively stout or strong adventitious root arising from a woody stem branch and extending downward directly toward the substrate, within which it ultimately becomes anchored, thus supporting the branch of origin; as in some Ficus (Moraceae). |
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intricate |
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arrangement |
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Entangled; irregularly intertwined and not readily disentangled. |
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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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laminar 1 |
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insertion |
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Upon or otherwise directly associated with the lamina (blade) of a foliaceous structure. |
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striped |
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coloration |
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Having one or more elongate, relatively narrow and, when multiple, more or less parallel, areas of contrasting hue and/or intensity. |
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knee root |
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STRUCTURE |
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A specialized secondary root of a wetland tree, a portion of which projects above mean water level and appears to bend as a leg does at the knee, its distalmost portion being anchored in the substrate beneath the water. The knee of the root is commonly regarded as a conduit for gas exchange between root interior and atmosphere, a function whose need is posited on the basis of the highly anaerobic and saturated conditions prevailing in wetland substrates. |
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mucronulate |
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apex |
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Finely mucronate. See also apiculate. |
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synandrous |
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architecture |
flower, androecium |
Having the stamens connate. |
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liguliflorous |
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architecture |
capitulum (head) |
Bearing florets that all are bisexual and have zygomorphic corollas; in Asteraceae (Compositae). |
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superposed 2 |
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position |
buds |
Axillary in pairs, one member of each pair directly above the other. |
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throat 2 |
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STRUCTURE |
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The fully connate portion of the limb of a disc floret, proximal to the lobes (distinct distal portions of the petals); in Asteraceae (Compositae). |
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palmatifid |
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plane shape |
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Palmately lobate; having three or more lobes whose longitudinal axes radiate from a common point. |
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terminal |
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insertion |
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Apical and with the same developmental axis as the whole, of which it is the distalmost portion or appendage. |
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petiolar |
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position |
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Upon or otherwise directly associated with the petioles. |
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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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ostiole |
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STRUCTURE |
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The distal aperture of a syconium (fig); in Ficus (Moraceae). |
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tubercle |
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FEATURE |
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A small, rounded, knot-like swelling or wart-like protrusion. |
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perennial 2 |
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nominative |
plant |
Of perennial duration. |
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velum pl. vela |
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STRUCTURE |
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A membranous adaxial flap or fold of vegetative tissue wholly or partly covering the sporangial cavity of a sporophyll; in Isoëtaceae. |
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tree |
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nominative |
plant |
Perennial, woody, more or less erect, relatively tall, with one or more distinct aboveground portions each with a single, relatively stout, columnar, main stem (trunk or bole) that bears branches. See also bush, frutex, shrub, subshrub, suffrutex, undershrub, woody clump. |
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contiguous |
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arrangement |
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Touching one another. |
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viviparous |
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reproduction |
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Producing sexually or asexually generated offspring that begin growth and development while borne upon the parent plant. |
