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branch |
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STRUCTURE |
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Any higher-order division of or outgrowth from an axis, vein or veinlet when such division or outgrowth is equivalent in nature to the structure of origin. |
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non-porous |
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porosity |
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Lacking vessels, the tracheary elements limited to tracheids and, sometimes, fiber-tracheids. |
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channeled |
= canaliculate |
solid shape |
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Having a longitudinal, transversely rounded depression; esp. a petiole or petiolule. |
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parietal |
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placentation |
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Upon the inner wall surface of a unilocular ovary, thus peripheral within the locule. |
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corona pl. coronae, coronas |
> gynostegium |
STRUCTURE |
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A crown-like set of connate or distinct appendages or enations borne upon a corolla or androecium or between them. |
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poly… |
= many-…, multi…, pluri… |
prefix |
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Indicating presence of or constitution by a relatively large number of entities of the type denoted by the term's stem; as in polyadelphous, polyandrous, polycarpellate. See also entries for particular terms with this prefix whose meanings, at least in some applications, are more specific than usually indicated by such combination;and also oligo… (few-…). |
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ray floret |
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STRUCTURE |
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A floret that has a zygomorphic corolla, is pistillate (either fertile or sterile) or neuter, and is borne in a radiate capitulum (head) peripheral (proximal) to the disc florets; in Asteraceae (Compositae). |
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epipetalous |
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insertion |
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Upon the petals, or partially adnate thereto and apparently arising therefrom. |
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floral tube |
= floral cup (broad sense), hypanthium (broad sense) |
STRUCTURE |
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A complex structure comprising fused portions of the perianth and/or androecium of a flower, sometimes also including receptacular tissue; surrounding and wholly, partly, or not at all adnate to the gynoecium; subdivided morphologically into casing, collar and/or neck; sometimes bearing free distal portions of the constituent structures. |
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sorus pl. sori |
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STRUCTURE |
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A cluster of sporangia borne upon a fertile frond, usually on its abaxial surface; often covered during maturation by a protective membrane, the indusium, that is an outgrowth from the epidermis; in Polypodiophyta. |
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gynostegium pl. gynostegia |
< corona |
STRUCTURE |
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An androecial corona, typically consisting of distinct hood- and/or horn-shaped enations that rise above the anthers; esp. in Asclepiadaceae. |
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straight |
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course |
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Lacking significant curves or bends. |
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indeterminate |
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development |
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Having the lateral (peripheral, basal, or proximal) portions differentiating first and the terminal (central, apical, or distal) portion later, development thus proceeding sequentially upward or inward. |
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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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leaflet |
> pinna, pinnule |
STRUCTURE |
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One of the one or more distinct, leaf-like, first- or higher-order divisions of a compound leaf blade; stalked (petiolulate) or sessile; borne upon a rachis or rachilla. |
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unctuous 1 |
= greasy, oily, oleaginous |
coating |
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Of a grease- or oil-like film. |
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apiculate |
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apex |
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Terminating abruptly in a short, slender, angular tip that is not notably harder or stiffer than the main body of the structure. See also mucronate, mucronulate. |
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lobate |
? cleft, dissected, divided, lobed, parted, partite, segmented |
plane shape |
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Having one or more component sectors or peripheral protrusions that is/are delimited by concavities in the surface or margin and that is/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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bifurcate |
< forked, furcate |
plane shape |
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Having two terminal, antrorse branches or divisions arising from a common point or level, like the prongs of a fork. |
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naked 1 |
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architecture |
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Lacking a covering that might have been expected. |
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palet 1 |
= pale, palea, receptacular bract |
STRUCTURE |
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A small papery (chartaceous) to membranous bract borne on the compound receptacle (torus) of a capitulum (head) in Asteraceae (Compositae). |
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pitted |
= foveate |
relief |
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Having numerous, small, rounded depressions. See also fine-pitted (foveolate, scrobiculate). |
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deflexed |
= reflexed |
orientation |
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Abruptly bent outward (abaxially), downward, or backward at some point along its length. |
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emargination |
= notch |
FEATURE |
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A relatively small, acute sinus at the distal end of a laminar structure. |
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hypanthium 1 (broad sense) pl. hypanthia |
= floral cup (broad sense), floral tube |
STRUCTURE |
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A complex structure comprising fused portions of the perianth and/or androecium of a flower, sometimes also including receptacular tissue; surrounding and wholly, partly, or not at all adnate to the gynoecium; subdivided morphologically into casing, collar and/or neck; sometimes bearing free distal portions of the constituent structures. |
