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gamophyllous |
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architecture |
plant, shoot axis, involucre |
Having pairs or whorls of leaves or bracts that are connate at their edges. |
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pore |
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FEATURE |
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A small aperture or opening in a wall or covering that allows transport between interior and exterior. |
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vasculature |
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STRUCTURE |
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The vascular strands of all orders (veins and veinlets) in a particular part or organ, regarded collectively; consisting of conducting tissues (xylem, phloem) and associated supporting and enclosing tissues (e.g., sclerenchyma, collenchyma). |
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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. |
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fruit |
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STRUCTURE |
|
Any unitary seed-bearing structure of a flowering plant, consisting of the matured or ripened pistil(s) of one or more flowers along with any other floral or vegetative tissue(s) persisting adnate to them; characteristic of and unique to Magnoliophyta (Angiospermae). |
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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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accrescent |
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duration |
structure |
Increasing further in size after the bearing structure has become functionally mature; esp. a calyx after anthesis. |
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gynecandrous |
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reproduction |
taxon |
Monoecious, each inflorescence having a distal sector with only pistillate flowers and a proximal sector with only staminate ones. |
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glomerulate |
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architecture |
inflorescence |
Comprising one or more glomerules; esp. in Asteraceae (Compositae). |
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horizontal |
|
orientation |
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Parallel to the horizon, perpendicular to the force of gravity. |
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involucel |
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STRUCTURE |
|
One or more closely proximate whorls of bractlets (bracteoles, prophylls) immediately subtending (below or outside) a subordinate portion of an inflorescence that is subtended as a whole by an involucre, the bractlets often leaf-like, sometimes petaloid. |
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infrafoliar |
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position |
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Upon the stem directly below a leaf insertion. |
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sheath (leaf) |
|
STRUCTURE |
|
The lower (basal or proximal), fundamentally laminar but strongly involute portion of one of the non-petiolate leaves characteristic of most monocotyledons (Liliidae); distinct from the leaf blade, which, when present, is borne distally upon it; analogous, though not necessarily homologous, with a petiole; usually more or less completely enclosing a portion of the stem above the node from which the leaf is borne. |
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alete |
|
architecture |
spore |
Lacking a tetrad scar (surficial ridge or angle resulting from coherence with others produced from the same spore mother cell). |
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laminate |
|
architecture |
foliaceous structure |
Having an expanded, more or less planate, distal portion (lamina or blade). |
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acropetal |
|
development |
|
Proceeding toward the apex, thus more advanced basally or proximally than apically or distally within a given frame of reference. |
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corymb |
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nominative |
inflorescence |
An indeterminate, more or less condensed raceme with the pedicels progressively shorter toward the distal end, the flowers all borne at approximately the same level, the whole generally plane or convex at the top, the flowers maturing from the edge inward (i.e., the proximal or outer flowers maturing first). |
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bud scale |
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STRUCTURE |
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A scale that, alone or aggregated with others, envelops and protects a bud. |
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limb 2 |
|
STRUCTURE |
|
The portion of the corolla of a bisexual or staminate disc floret distal to the level of filament insertion; in Asteraceae (Compositae). |
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size |
|
CHARACTER |
|
Nature as to absolute or comparative extent in any one dimension or in area or volume. |
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andropetalous 1 |
|
architecture |
flower, androecium |
Having petaloid, sterile stamens. |
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cauline |
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insertion |
|
Upon, arising from, or otherwise directly associated with the stem. |
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square |
|
plane shape |
|
Equilaterally rectangular. |
|
margin |
|
CHARACTER |
|
Configuration of all or part of the periphery of a planate structure, sometimes referred to as though it were discrete and an entity in its own right for descriptive purposes. The extent of the area considered to pertain to the margin in a given case is, of necessity, subjectively determined. As a general rule, peripheral concavities that do not exceed 1/5 the distance from the generalized edge to the center or main axis of the structure are considered components of marginal configuration, deeper concavities being considered components of overall shape. The margin is sometimes considered to be only the infinitely thin boundary itself, and such a definition is probably the one most technically correct from the standpoint of geometry and general usage. However, it is inconsistent with traditional usage in descriptive botany, which treats the margin as an entity of substance both semantically and conceptually. The semantic antecedent of some descriptors is "margin," whereas the antecedent of others is the structure as a whole (e.g., leaf). |
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dichlamydeous |
|
architecture |
flower |
Having a perianth differentiated into a distinct calyx (sepals) and corolla (petals). |
