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symmetric(al) 1 |
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solid shape |
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Divisible into essentially equal halves along one or more lines or planes. |
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episepalous |
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insertion |
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Upon the sepals, or partially adnate thereto and apparently arising therefrom. |
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rigent |
= rigid, stiff |
texture |
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Strongly resisting deformation over its length. |
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rightward |
= dextrorse |
orientation |
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Directed to the right, relative to the direction of growth along an explicit or implicit axis of reference. See also leftward (sinistrorse). |
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obdeltate |
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plane shape |
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Approximately equilaterally triangular, broadest distally, and regularly attenuate to an angular base; inversely deltate; equilaterally cuneate. |
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pseudostem |
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STRUCTURE |
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A structure that resembles a stem but is not part of the axial system of a shoot, lacking anatomical differentiation into nodes and internodes. |
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lenticular 2 |
= biconvex, lens-shaped |
solid shape |
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Relatively thin with two round, convex, opposite broad faces intersecting acutely at the circumferential edge; like a double-convex lens. See also disciform (discoid), meniscoid. |
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transverse 1 |
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dehiscence |
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More or less perpendicular to the central axis. |
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circumscissile |
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dehiscence |
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Splitting transversely through the exterior wall about its entire circumference, the resulting upper cap-like portion falling away. |
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fixed |
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fixation |
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Attached to the bearing structure in a manner allowing no significant rotation or declination in relation to it. |
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scutate |
= buckler-shaped, 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 scutellate (platter-shaped, scutelliform), which is not clearly distinct in its application. |
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dentate |
= toothed |
margin |
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Having regularly spaced, angular convexities oriented more or less perpendicular to the generalized perimeter. See also crenate (scalloped), crenulate (small-scalloped), denticulate (small-toothed), serrate (sawtoothed), serrulate (small-sawtoothed). |
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barb 1 |
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STRUCTURE |
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Any relatively short, stiff, sharp, acutely inserted or bent, antrorse or retrorse, terminal or lateral appendage. |
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infrafoliar |
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position |
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Upon the stem directly below a leaf insertion. |
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superaxillary |
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insertion |
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Internodal but close to and directly above the axil(s). |
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brittle |
= friable |
texture |
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Dry, firm and easily broken. |
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endophytic |
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habit |
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Growing within some portion of another, unrelated, living plant. |
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reproduction |
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CHARACTER |
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Type, morphology, disposition, function and/or dissemination of reproductive structures. |
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nerve |
= vein; > costa, midnerve , midrib, midvein, rib |
STRUCTURE |
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A strand belonging to any except the ultimate (least in diameter) order of vasculature in a leaf or other foliaceous structure. See also lateral vein, primary vein, secondary vein, tertiary vein, veinlet. |
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sinus pl. sinus, sinuses |
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FEATURE |
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The space, indentation, or invagination (or, for some descriptive purposes, the outline thereof) between and delimiting any two consecutive or adjacent lobes or teeth of a structure. |
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hastate 2 |
= halberd-head-shaped |
plane shape |
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Basically triangular with an acute apex and two large, widely divergent basal lobes, each generally triangular and distally acute; like the stylized outline of the broad lateral face of a halberd head. |
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phyllodium pl. phyllodia |
= phyllode |
STRUCTURE |
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A leaf deemed to consist entirely or almost entirely of tissues evolutionarily derived from the petiole, all or a distal portion of which has become laminar, the original blade reduced to the point of absence or vestigiality. |
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lanceoloid |
= lancehead-shaped, lanciform |
solid shape |
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Considerably longer than broad, compressed or not, broadest near the base and somewhat concavely attenuate to the apex, the attenuation in all median longitudinal planes or else largely confined to one, depending upon the extent of compression, if any. See also oblanceoloid (oblanciform). |
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ala 2 pl. alae |
= wing |
STRUCTURE |
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One of the two lateral petals in a papilionaceous corolla. |
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three-… |
= tri… |
prefix |
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Indicating presence of or constitution by three entities of the type denoted by the term's stem; as in three-cleft, three-flowered, three-ranked. See also thrice… (tri…, triple…). |
