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stamen |
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STRUCTURE |
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A seed-plant organ that produces and releases pollen; usually comprising a stalk (filament) that bears a locular structure (anther) containing sporogenous tissue; however, the filament may be lacking and the anther sessile, or the stamen may be undifferentiated, the whole then consisting of microsporangia embedded in or borne upon the surface of a more or less planate body of sterile tissue; one of the constituent organs of a bisexual or a staminate flower; may be distinct or else connate with one or more others and/or may be free or else adnate with one or more other floral structures. |
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suprafoliar |
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position |
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Upon the stems, each directly above (distal to) and very near a point of leaf insertion. |
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knot-shaped |
= gongylodate, gongyloid, knob-shaped, nodiform |
solid shape |
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Approximately globose, the surface convoluted or not, like a knob or knot; usually applied only to structures or components that are relatively small. |
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trullate |
= trowel-shaped, trulliform |
plane shape |
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Broadest below the middle, more or less straightly attenuate to either end, the sides angled at the level of greatest width; like the blade of a mason's trowel. See also obtrullate, obtrulliform. |
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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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calyculus 1 pl. calyculi |
= epicalyx |
STRUCTURE |
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A whorl of bracts immediately subtending (beneath or outside) a calyx; literally, a little calyx. |
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octa… |
= eight-… |
prefix |
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Indicating presence of or constitution by eight entities of the type denoted by the term's stem; as in octandrous, octocarpellate, octolocular. |
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coating |
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CHARACTER |
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Exudate that covers the surface proper. See also indumentum (vesture), pubescence. |
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cruciate 2 |
= cross-shaped |
solid shape |
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Having two elongate, basically straight portions intersecting at a point interior to the ends of each. |
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dolabriform |
= axe-shaped |
solid shape |
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Elongate, basally terete, becoming strongly compressed toward an abruptly and unilaterally broader apex; like an axe (handle plus head). This term is not semantically distinct from dolabrate, but botanically they have had somewhat different applications. |
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rhytidomal |
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insertion |
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Within, upon, or otherwise directly associated with the bark. |
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exudation |
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CHARACTER |
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Discharged substance, as to type. |
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semiterete |
= half-terete |
solid shape |
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Terete but flattened on one side. |
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spore case |
= sporangium |
STRUCTURE |
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A spore-producing organ; basically capsular, often supported by a slender stalk (sporangiophore), often lidded (operculate). In Bryophyta and Polypodiophyta, a distinct portion of the sporangial wall effects regular dehiscence at maturity. Spore cases or their equivalents are also present, but of little or no descriptive significance, in seed plants. |
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subterranean |
= hypogeal, hypogeous |
location |
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Within the ground, beneath its surface. |
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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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velvety |
= velutinous |
pubescence |
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Of or bearing dense, moderately firm, more or less erect, capillate trichomes, like velvet pile to the touch. |
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aestivation |
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CHARACTER |
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Disposition of perianth (undifferentiated), calyx, or corolla members in the bud. |
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ascidiform |
= pitcher-shaped |
solid shape |
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Having a more or less tubular, radially or bilaterally symmetrical body closed at the base and broadening toward a more or less open apex sometimes lidded or overarched by a prolongation of one side; like a pitcher. |
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buckler-shaped |
= scutate, scutiform |
solid shape |
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Relatively thin with opposite broad oblong faces, planate to shallowly concave-convex, sometimes thickened about the periphery such that each face has a marginal rim; like an oblong shield. See also platter-shaped (scutellate, scutelliform), which is not clearly distinct in its application. |
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obcordiform |
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solid shape |
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Inversely cordiform (heart-shaped). |
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circinate 1 |
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solid shape |
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Terete and rolled downward from the apex in a tight coil. |
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pectinate |
= comb-shaped |
plane shape |
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Finely divided, the divisions slender, oriented more or less perpendicular to the central axis, and resembling the teeth of a comb. |
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porosity |
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CHARACTER |
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Presence and disposition of vessels (pores) in wood (xylem). |
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relief |
= sculpture |
CHARACTER |
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General topographic aspect of a surface. Overlaps conceptually with solid shape. |
