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tri… 1 |
= three-… |
prefix |
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Indicating presence of or constitution by three entities of the type denoted by the term's stem; as in tricarpellate, trifurcate, trilocular. |
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vestigial |
< obsolete (not recommended), rudimentary |
manifestation |
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Not developing fully and not functional compared with corresponding structures in other taxa, and thought to have devolved to that state from a fully developed and functional structure in an ancestral taxon. |
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megaphyll |
= leaf, macrophyll (not recommended); > frond, needle |
STRUCTURE |
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A principal, vegetative shoot organ borne laterally from a stem node; its vascular tissues, if any, continuous with those of the stem; undergoing no significant secondary growth; usually more or less bilaterally symmetrical; comprising a distal, usually laminar blade and/or a proximal stalk (petiole) or sheath; usually a primary site of photosynthesis. |
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bundled 2 (not recommended) |
= fascicled, fasciculate |
arrangement |
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Disposed in one or more fascicles, the members of each inserted close together and only slightly if at all divergent from one another. |
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obscure |
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manifestation |
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Hardly evident. |
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crenule |
= scalloplet |
FEATURE |
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A diminutive crena (scallop). See also dens (tooth), sawtooth, sawtoothlet, toothlet. |
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primocane |
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STRUCTURE |
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A biennial or perennial stem before it has begun flowering, when the latter does not occur until at least its second season of growth; esp. in Rubus (Rosaceae). |
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dissected |
? cleft, divided, lobate, lobed, parted, partite, segmented |
plane 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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reticulodromous |
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venation |
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Having a single median primary vein that branches to either side along the length of the lamina, the secondary veins running thence toward the margin, branching repeatedly, becoming less distinct, and yielding a dense higher-order reticulum near the margin. |
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spinulose |
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apex |
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Finely spinose. |
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headless 2 |
= acephalous |
solid shape |
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Not terminating in a head-like portion, esp. when one might be expected. |
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subopposite |
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arrangement |
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Alternate but verging on opposite. |
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intercostal |
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position |
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Between the costae. |
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valvate 1 |
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aestivation |
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Whorled and with members not overlapping, adjacent members laterally contiguous at their margins. |
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acuminate |
= concave-tapered |
apex |
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Gradually diminishing in width or diameter to a slender tip, the sides longitudinally concave. Corresponds with attenuate for base shape. |
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aril 2 (strict sense) |
= arillus |
STRUCTURE |
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An appendicular structure that wholly or partly envelops a seed and is an outgrowth from the funicle or raphe, and thus is ontogenetically derived from the placenta; usually fleshy or pulpy, sometimes spongy or tufted-capillate, often brightly colored. |
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macrosporocarp (not recommended) |
= megasporocarp |
STRUCTURE |
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A sporocarp that bears only macrosporangia (megasporangia). |
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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 |
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The distal, relatively flat portion of the corolla of a ray floret, terminating in 0--4 teeth or lobes; in Asteraceae (Compositae). |
