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torus 2 pl. tori |
= receptacle |
STRUCTURE |
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The short, expanded, compound axial structure surmounting a peduncle and basal to two or more flowers, or to the florets of a capitulum (head) in Asteraceae (Compositae), where it may bear paleae (receptacular bracts), scales, bristles, trichomes, or subulate enations, and may be smooth or variously pitted (alveolate, foveolate). |
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ventral (not recommended) |
= adaxial |
position |
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On or pertaining to the side or portion of a lateral structure that faces (or would face) toward the bearing axis when (or if) the axis of the lateral structure is (or were) oriented in the same general direction as the bearing axis. |
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aseptate |
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architecture |
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Lacking internal walls or partitions (septae). |
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marginal |
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position |
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Upon or otherwise directly associated with the margins. |
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bud-scale scar |
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FEATURE |
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A scar on a stem due to abscission of a bud scale. The scar(s) encircle(s) the axis to which the bud was terminal, each single scar having an outline like that of a transverse section through the base of the bud scale that was inserted there. Sets of bud scale scars (one set per bud) usually delimit seasonal stem growth increments in temperate zone taxa. |
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circumcaulous |
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insertion |
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Upon and surrounding the stem. |
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pedicel |
< stalk |
STRUCTURE |
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The stalk, when present, of a single flower, except when the flower is solitary and deemed to represent an evolutionarily reduced compound inflorescence borne directly upon a peduncle. |
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cotyledon |
= seed leaf |
STRUCTURE |
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Any of the one or more primary foliar structures of an embryonic seed plant, proximal to all succeeding leaf primordia; sometimes serving as a storage organ for food reserves in the seed, as in peas and beans. |
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position |
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CHARACTER |
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Location or disposition with reference to some dissimilar structure(s) or larger context. The lexicons relating to position and insertion overlap to a great degree, since these two morphological concepts are often inseparable in practice. Also overlaps conceptually with arrangement, habit, orientation, and shape. |
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reniform 2 |
= kidney-shaped |
solid shape |
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Thickly elongate and arcuate, circular or compressed-circular in transverse section, each end bluntly rounded; like the generalized shape of a human kidney. |
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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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follicetum pl. folliceta |
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STRUCTURE |
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An aggregate of follicles produced from a single flower with multiple simple pistils. |
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spiculate |
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relief |
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Having small, fine, stiff, acute protrusions that resemble little spikes. See also scabridulous (scabrellate, scabrellous, which is not clearly distinct in its application. |
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hard |
= indurate(d) |
texture |
|
Yielding only under strong pressure; not deformable without internal structural disruption. See also callose (callous), hard-coated (corticate), hard-stemmed (sclerocaulous). |
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stylopodium pl. stylopodia |
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STRUCTURE |
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A discoid enlargement at the base of the styles; esp. in Apiaceae (Umbelliferae). |
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inframedial |
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insertion |
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Slightly below the middle of the structure in point. |
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thallus 1 pl. thalli |
|
STRUCTURE |
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The vegetative portion of a shoot when not differentiated into stem and leaves; esp. in Lemnaceae. |
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longitudinal 2 |
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orientation |
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Parallel to the long axis of the context of reference. |
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bossed |
= umbonate |
solid shape |
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Having an umbo. |
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convolute 3 |
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vernation |
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Each rolled laterally and wholly surrounded by and/or surrounding the one(s) next adjacent. |
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pliant |
= flexible, pliable, supple |
texture |
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Able to bend over its length and/or breadth without structural disruption. |
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development |
= ontogeny |
CHARACTER |
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Mode or pattern of growth and differentiation. |
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raised |
> prominent, prominulous |
prominence |
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Protruding above the general level of the surrounding surface. |
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enzymatic |
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exudation |
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Secreting a digestive exoenzyme; in carnivorous plants. |
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scabrate |
= rough, scabrid, scabridous, scabrous |
relief |
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Having small, stout, stiff, more or less acute protrusions. |
