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scape |
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STRUCTURE |
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A leafless, essentially naked, inflorescence-bearing stem (or peduncle) arising directly from a caudex or rhizome, its point of insertion slightly beneath, at, or slightly above the substrate surface. |
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floricane |
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STRUCTURE |
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A biennial or perennial stem after it has begun flowering, when that does not occur until at least its second season of growth; applied especially to the stems of brambles (Rubus spp.). |
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spadix pl. spadices |
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STRUCTURE |
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A thick, fleshy, primary inflorescence axis bearing sessile flowers more or less sunken into its surface, the whole subtended and sometimes partially enclosed by a specialized bract, the spathe; esp. in Araceae. |
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streaked 1 |
= striate |
coloration |
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Having an overall pattern of fine, more or less parallel lines of contrasting hue and/or intensity. |
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indumentum pl. indumenta var. indument |
= vesture |
STRUCTURE / SUBSTANCE |
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The trichomes and/or exuded substance that overlie a surface proper, regarded collectively. See also coating, pubescence. |
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leathery |
= coriaceous |
texture |
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Moderately thick, tough, and very pliable. |
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absent |
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presence |
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Not occurring within the context in point. |
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apiculum 2 pl. apicula |
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STRUCTURE |
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The apex of a connective, when prolonged above the union of the anthers. |
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lobate |
? cleft, dissected, divided, lobed, parted, partite, segmented |
solid 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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caudate 2 |
= tailed |
base |
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With one or more relatively slender, retrorse basal enations or appendages. |
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palinactinodromous |
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venation |
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Compound actinodromous, with higher-order branch radiations above the level of and similar to the primary one. |
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connective |
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STRUCTURE |
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The tissue between and joining the laterally opposed thecae of an anther, connecting them with the distal end of the staminal filament when the latter is present. |
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placenta-shaped |
= placentiform |
solid shape |
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Thickly discoid (disciform); like the generalized form of a human placenta. |
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dehiscent |
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dehiscence |
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Splitting or forming one or more apertures at maturity, the contents thereby released for dispersal. |
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rachilla 1 var. rhachilla |
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STRUCTURE |
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A second- or higher-order axis of a compound leaf blade, bearing higher-order rachillae, leaflets, pinnules and/or tendrils. |
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embryo sac |
< megagametophyte |
STRUCTURE |
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The multinucleate generative cell of an ovule, within which fertilization and zygote formation occur; resulting from meiotic division of a megaspore mother cell within the nucellus, and thus genetically haploid; its contents generally considered to represent an evolutionarily reduced gametophyte. |
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five-… |
= penta… |
prefix |
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Indicating presence of or constitution by five entities of the type denoted by the term's stem; as in five-grooved, five-stamened, five-tepaled. |
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simple 1 |
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architecture |
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Externally unitary and comprising only one basic morphological unit; not compound in either sense of that term. |
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glutinous 1 |
> mucilaginous, mucous, viscid |
coating |
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Of a sticky or slimy substance. |
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hyphodromous |
= one-veined, single-veined |
venation |
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Having one median, primary vein and no other venation externally evident. |
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lamina 2 pl. laminae |
= ray |
STRUCTURE |
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The distal, relatively flat portion of the zygomorphic corolla of a ray floret, terminating in 0--4 teeth or lobes; in Asteraceae (Compositae). |
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tufted 2 |
> floccose |
pubescence |
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Of or bearing tufts of soft, fine, capillate trichomes that rub off easily. |
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basal cell |
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STRUCTURE |
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Any of the ring of cells forming the lowermost (proximal) portion of an antheridial wall. |
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operculate |
= lidded |
architecture |
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Having an operculum (lid). |
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columella 2 pl. columellae, columellas |
= carpophore; < stalk |
STRUCTURE |
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The stalk supporting a mericarp after dehiscence of a schizocarpic fruit, the central axis of the fruit having split longitudinally to yield two or four such stalks; composed of receptacular and (primarily) gynoecial tissues; esp. in Apiaceae (Umbelliferae). |
