rhizophore |
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STRUCTURE |
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A stem branch that bears no leaves and from which roots eventually arise; esp. in Selaginellaceae. |
hirsute |
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pubescence |
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Bearing coarse, rough, elongate, more or less erect, capillate trichomes. See also hirtellous. |
samara |
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nominative |
fruit |
Dry, indehiscent and having one or more integral alate portions that aid in aerial dispersal. |
caudex pl. caudices |
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STRUCTURE |
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The short, persistent, thickened, more or less erect, main stem of a perennial plant that otherwise has annual stems. |
incumbent 2 |
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orientation |
anther |
Oppositely parallel to the filament on the adaxial side of the latter. |
isopetalous |
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architecture |
flower, perianth, corolla |
Having the petals essentially alike in size and shape. |
latex pl. latices, latexes |
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SUBSTANCE |
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A moderately viscous and sticky exudate, often milky, sometimes otherwise colored or clear. Overlaps conceptually with gum. |
antisepalous |
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insertion |
equivalent floral structures |
Each inserted directly above or below a sepal. In place of this term, the phrase "opposite the sepals" is often used, but that contradicts the sense of opposite as otherwise employed (arrangement of lateral structures along an axis) and should be avoided. |
…colporate |
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architecture |
pollen grain |
Having the number of colpi indicated by the prefix, each containing a pore; as in dicolporate, 3-colporate. |
spikelet |
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nominative |
inflorescence |
A compound structure belonging to the penultimate subdivisional order of a sedge or grass inflorescence; consisting of one or more florets (each a diminutive flower subtended by specialized bractlets (bracteoles) called scales or glumes in sedges, lemma and palea in grasses), spicately arranged along a common axis (rachilla), the axis and florets together subtended by one or (usually) two bracts (first and second glumes). The spikelet is usually considered to be the basic unit of inflorescence in Cyperaceae and Poaceae (Gramineae). |
course |
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CHARACTER |
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Linear pattern of the centerline through the length of an axis or vein. |
staminal |
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position |
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Upon or otherwise directly associated with the stamens. |
subsidiary cell |
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STRUCTURE |
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One of the cytologically distinctive epidermal cells that are sometimes present in a stomate and that surround and are regularly oriented in relation to the guard cells. |
cryptic |
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coloration |
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Similar to its natural background, from which it is not readily distinguished. |
dilate(d) |
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solid shape |
elongate structure |
Narrow at one end and broadening toward the other; esp. when essentially terete at the narrow proximal end and seemingly flattened distally, as some anther filaments. |
dimidiate |
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plane shape |
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Halved, figuratively; bilaterally asymmetric, nearly or wholly lacking one side as implicitly compared with some corresponding bilaterally symmetric structure, real or imagined. |
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. |
embryo |
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STRUCTURE |
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The rudimentary spermatophyte contained within a viable seed. |
determinate |
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development |
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Having the terminal (central, apical, or distal) portion differentiating first and the lateral (peripheral, basal, or proximal) portions later, development thus proceeding sequentially downward or outward, growth of the whole thereby organizationally limited. |
dwarfed |
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size |
plant |
Strongly reduced; unusually or unexpectedly very small throughout. |
umbellate |
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architecture |
inflorescence |
Comprising one or more umbels. |
…ternate |
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architecture |
foliaceous structure |
Compound with the number of orders of leaflets indicated by the prefix, each order ternate; as in biternate, thrice-ternate. |
epipetalous |
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position |
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Upon the petals, or partially adnate thereto and apparently arising therefrom. |
perforate |
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architecture |
foliaceous structure |
Having portions of the laminar (blade) area naturally devoid of any tissue. |
venation |
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CHARACTER |
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Configuration of laminar vasculature as to its hierarchical organization and the dispositions of component orders. For descriptive purposes, the orders of vasculature are ranked with reference only to the lamina in point, irrespective of rank within any larger vascular context. |