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prismatic |
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solid shape |
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Uniformly polygonal in transverse section, basally and apically truncate, all faces essentially plane. |
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dissected |
? cleft, divided, lobate, lobed, parted, partite, segmented |
solid shape |
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Having two or more component sectors or peripheral protrusions that are delimited by concavities in the surface or margin and that are not proximally distinct from the remainder of the whole. The meanings of this term and its approximate synonyms sometimes have been supposed to differ according to the depth of the delimiting concavities relative to the midline or midpoint of the overall structure, and/or to the shape or proportions of the protusions or sectors; however, there has been little consistency in the applications of the various terms according to such distinctions, which are ones only of degree and are necessarily arbitrary in any case. In general usage, these terms differ only indistinctly and connotatively: cleft, lobed (or lobate), parted (or partite) and segmented tend to connote fewer protrusions or sectors; lobate usually connotes as well a generally rounded shape; dissected tends to connote more numerous sectors that are elongate and angular. See also cut (incised, lacerate, torn), laciniate (slashed). |
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retrorse |
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orientation |
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Directed generally backward, toward the proximal end of the context of reference, parallel or at an acute angle to the bearing structure. |
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seedling |
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PLANT |
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A plant in the first stages of its growth following emergence from the seed. |
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free-central |
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placentation |
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Upon the free axial column of a compound, unilocular ovary. |
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spinulose |
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architecture |
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Finely spinose. |
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suborbicular |
= subglobose, subrotund, subspheric(al), subspheroid(al) |
solid shape |
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Broadly ellipsoid with a length:width ratio closely approaching 1:1; almost orbicular, slightly longer than broad. |
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internodal |
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insertion |
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Upon or otherwise directly associated with the internodes. |
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liguliform |
= lorate, strap-shaped |
solid shape |
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Elongate and relatively thin with the opposite faces more or less plane and moderately narrow, their edges more or less straight and parallel over most of their length; resembling a strap. |
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acute |
= sharp |
apex |
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Sharply angular; regularly and more or less straightly attenuate to an angular tip, the sides intersecting at an angle of less than 90°. |
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macrosporophyll (not recommended) |
= megasporophyll; > carpel, cone scale, ovuliferous scale |
STRUCTURE |
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A sporophyll that bears only megasporangia and, in Pinophyta, naked ovules that develop subsequently. |
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bractleted |
= bracteolate |
architecture |
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Bearing or subtended by one or more bractlets (bracteoles, prophylls). |
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nodulose |
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solid shape |
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Diminutively nodose; esp. roots of Fabaceae (Leguminosae), the nodules harboring nitrogen-fixing bacteria. |
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channel |
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FEATURE |
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A longitudinal, transversely rounded depression; esp. along the adaxial surface of a petiole or petiolule. |
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parchment-like |
= pergamentaceous |
texture |
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Very thin, pliable, and fairly tough; like parchment. See also chartaceous (papery, papyraceous), membranaceous (membranous). |
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corolla tube 2 |
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STRUCTURE |
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The portion of the corolla of a bisexual or staminate disc floret proximal to the level of filament insertion; in Asteraceae (Compositae). |
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pollinium pl. pollinia |
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STRUCTURE |
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A mass of coherent pollen grains disseminated as a unit by adhering to a pollinating insect, representing the entire content of a single theca or of fused thecae; often distally attenuate to a sterile caudicle (translator arm), which may attach to a viscidium, either directly or through an intervening stipe; esp. in Asclepiadaceae, Orchidaceae. |
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ray 2 |
= lamina |
STRUCTURE |
|
The distal, relatively flat portion of the corolla of a ray floret, terminating in 0--4 teeth or lobes; in Asteraceae (Compositae). |
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scaly 1 |
> lepidote, squamate, squamellose, squamose |
pubescence |
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Bearing scales [squamae (lepides) or squamellae]. |
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floral cup 2 (strict sense) |
= hypanthium (strict sense) |
STRUCTURE |
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A marginal protrusion from or enlargement of the receptacle (torus) of a flower, encircling and wholly, partly or not at all adnate to the gynoecium, bearing the perianth and androecium. |
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solitary 1 |
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arrangement |
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Disposed singly, each remote from any others. |
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gynophore |
= hypogynium; < stalk, stipe (broad sense, not recommended) |
STRUCTURE |
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The basal portion of an ovary when constricted and stalk-like above the level of perianth insertion, bearing the main body of the pistil at its summit. |
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indehiscent |
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dehiscence |
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Not splitting or forming an aperture at maturity, the contents being released for dispersal only after decay, digestion, or erosion of the structure. |
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uncinate |
= hamate, hooked |
apex |
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Having a recurved terminal portion that resembles a hook. |
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bicolor(ous) |
< discolor(ous) |
coloration |
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Having two surfaces of different colors; esp. leaves with differently colored adaxial and abaxial surfaces. |
