Flora of North America Glossary

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Term Synonyms Category Limitation Definition
continuous 3 architecture rachilla, rachis Not disarticulating at maturity.
contorted 1 = convolute aestivation Imbricate and whorled, each member in turn overlapped by that to one side and overlapping that to the other, the whole tightly rolled and appearing as though twisted.
contorted 2 = twisted architecture plant, axis Having a helical pattern of relief and/or coloration along its length.
contortuplicate 1 = torsive aestivation Plicate and contorted.
contortuplicate 2 vernation Folded and twisted.
contractile architecture structure Diminishing in length, or acquiring the potential energy for a sudden decrease, due to the generation of internal tension during tissue development.
convolute 1 = contorted aestivation Imbricate and whorled, each member in turn overlapped by that to one side and overlapping that to the other, the whole tightly rolled and appearing as though twisted.
convolute 2 arrangement cotyledons Each rolled or folded inward longitudinally, one enveloping the other.
convolute 3 vernation Each rolled laterally and wholly surrounded by and/or surrounding the one(s) next adjacent.
cordate 1 = heart-shaped base laminar structure Having two equal, more or less rounded, retrorse lobes, one to either side, overlapping or not, the intervening sinus relatively deep.
cordate 2 = heart-shaped plane shape Fairly regularly attenuate from a broad, bilobate base to a narrow apex, the lobes large, rounded, retrorse, and intersecting; like the stylized outline of the broad lateral face of a heart. See also obcordate.
cordiform = heart-shaped solid shape Having two rounded basal lobes, broadest near the base and fairly regularly attenuate to an essentially angular apex; like the stylized form of a heart. See also obcordiform.
coriaceous = leathery texture Moderately thick, tough, and very pliable.
corky = suberous texture Firm, relatively light, discontinuous but strongly cohesive, and resilient.
corm STRUCTURE A short, thickened, solid, usually subterranean, sometimes fleshy stem base containing stored carbohydrates and serving as a perennating organ.
cormose architecture plant Growing from corms.
corneous = horny texture Hard, dense, fine-grained or compactly fibrous, and tough; resembling the substance of animal horn.
corniculate = horned apex Bearing one or more cornicula (horns).
corniculum pl. cornicula = horn STRUCTURE A straight or curved, slenderly conic or conoidal protrusion or terminal portion that resembles an animal horn.
corniform = horn-shaped solid shape Straight or curved and slenderly conic or conoidal, like an animal horn.
corolla pl. corollae, corollas STRUCTURE Collectively, the petals of a flower, whether distinct or connate; the inner or distal envelope of a differentiated perianth, whether the other envelope (calyx) is actually present or is deemed to be absent due to evolutionary reduction.
corolla tube 1 STRUCTURE A relatively narrow, fully connate portion of a sympetalous (gamopetalous) corolla proximal to a broader portion (limb) that comprises the distinct or connate distal portions of the petals; except in bisexual or staminate disc florets of Asteraceae (Compositae).
corolla tube 2 STRUCTURE The portion of the corolla of a bisexual or staminate disc floret proximal to the level of filament insertion; in Asteraceae (Compositae).
coronal insertion Upon or otherwise directly associated with the corona.
coronal position Upon or otherwise directly associated with the corona.
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