barb 1 |
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STRUCTURE |
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Any relatively short, stiff, sharp, acutely inserted or bent, antrorse or retrorse, terminal or lateral appendage. |
reflexed |
= deflexed |
orientation |
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Abruptly bent outward (abaxially), downward, or backward at some point along its length. |
development |
= ontogeny |
CHARACTER |
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Mode or pattern of growth and differentiation. |
staminal |
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position |
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Upon or otherwise directly associated with the stamens. |
notch |
= emargination |
FEATURE |
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A relatively small, acute sinus at the distal end of a laminar structure. |
fan-shaped |
= flabellate, flabelliform |
solid shape |
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Strongly compressed, broadest near the apex and attenuate to a narrow base, plaited longitudinally, the alternating folds radiating from the base, the whole basically triangular in broad aspect; like a partially expanded folding fan. |
valve |
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STRUCTURE |
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Any longitudinal segment of a fruit wall delimited by lines of dehiscence. |
zig-zag |
= flexuous |
course |
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Having alternating angular bends to either side, more or less straight between the bends. |
uncinate |
= hamate, hooked |
apex |
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Having a recurved terminal portion that resembles a hook. |
torus 1 pl. tori |
= receptacle |
STRUCTURE |
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The relatively short, simple, axial structure surmounting a pedicel and basal to the flower, usually broader than the pedicel. |
strobilus pl. strobili |
= cone; > female cone, macrostrobilus (not recommended), male cone, megastrobilus, microstrobilus |
STRUCTURE |
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A compound or complex reproductive structure consisting of a central axis bearing congested sporophylls and sometimes other lateral members (e.g., bracts) that are sterile. |
cartilage-like |
= cartilaginous |
texture |
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Firm, dense, tough, somewhat pliable, and resilient, like human cartilage. |
astomatiferous |
= non-stomate-bearing |
architecture |
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Lacking stomates in the epidermis. |
costal |
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insertion |
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Upon or otherwise directly associated with the costa(e) of a laminar structure. |
half-obterete |
= semiobterete |
solid shape |
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Inversely half-terete; obterete but flattened on one side. |
half-terete |
= semiterete |
solid shape |
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Terete but flattened on one side. |
muriculate |
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relief |
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Finely muricate. |
segment |
? division, lobe |
STRUCTURE |
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Any generally convex, major peripheral protrusion or component sector that is delimited by concavities in the surface or margin and that is not proximally distinct from the remainder of the whole. |
sporophyte |
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PLANT |
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The main, ultimate, spore-bearing stage in the diploid (2n chromosomes) phase of a taxon's life cycle. Two morphologically and genetically distinct and alternate phases together constitute the complete life cycle in sexually reproducing taxa, the other phase (gametophytic) being haploid (n chromosomes). Any taxon whose life cycle is confined to one or the other phase is limited to asexual means of reproduction, since sexual reproduction with consequent genetic recombination is impossible without alternation between haploid and diploid states via meiosis and fertilization. The term sporophytic applies to any part of the diploid phase, including all unicellular to multicellular entities belonging to it, whereas sporophyte is reserved for the principal and directly spore-producing stage of that phase. |
coleorhiza |
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STRUCTURE |
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A sheath-like structure enclosing the radicle (embryonic root) in an embryo; esp. in Poaceae (Gramineae). |
lyrate |
= lyre-shaped |
plane shape |
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Basically obovate but with several proximal concavities on each side, these sinuses opposite one another in pairs and decreasing in size toward the base; like the frontal outline of a lyre. |
six-… |
= hexa… |
prefix |
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Indicating presence of or constitution by six entities of the type denoted by the term's stem; as in six-angled, six-sepaled, six-styled. |
tuft |
> coma |
STRUCTURE |
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A distinct, compact, relatively dense, homogeneous aggregation of plants or constituent structures such as stems, branches, leaves, bracts or trichomes. |
duplicate 2 |
= conduplicate |
vernation |
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Each leaf folded sharply inward along its longitudinal axis, the adaxial surfaces of each side facing one another. |
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. |