coriaceous


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Related to coriaceous: adumbrations

coriaceous

[¦kȯr·ē¦ā·shəs]
(biology)
Leathery, applied to leaves and certain insects.
References in periodicals archive ?
saportanus they are concave, coriaceous and are opposite to the sepals/calyx lobes, while in S.
5 cm long, coriaceous, irregularly spreading or deflexed, dehiscent, oblong, straight, subterete.
Due to the coriaceous undivided laminae and blackish comose stem scales, PI.
5 mm, brown-stramineous, dull, glabrous; laminae coriaceous, 1-pinnatifid to -pinnatisect, narrowly linear, gradually reduced proximally, 21-50 x 1.
coriaceous and 2-4 cm wide), inflorescence 20-30 cm long (vs.
TEXTURE: Impunctate, polished, not shagreened; forewings coriaceous, more so along inner claval margin.
Fully winged robust specimens, with dense setae and coriaceous or rugose surface sculpture on the head and mesosoma; metasoma densely pubescent; the head is usually narrower than the mesosoma, transverse in anterior view, with genae strongly broadened behind eyes, the malar sulcus always absent; notauli usually are incomplete, impressed in the posterior 2/3 of the mesoscutum; scutellar foveae indistinctly delimited, confluent; all tarsal claws with strong basal lobe.
1x as broad as long, slightly convex in lateral view, sparsely punctate and very finely coriaceous in upper 0.
8 mm wide, chartaceous to coriaceous, elliptic, apices rounded, margins recurved when dry, veins barely visible, terminating in hydathodes close to the margins; laminar scales similar to those of the stipes, densely covering both surfaces when young, then glabrescent on the adaxial surface.
Jamesonia, with distinctly coriaceous leaves and highly reduced pinnae representing specialization to the paramo habitat, was believed to be derived from Eriosorus, which has variously pinnate leaves (Tryon 1962, 1970).
lanceolate or narrowly obovate-oblong, coriaceous, entire or with a few large spinous teeth, dull green above, pale and glaucous beneath, secondary nerves not prominent on the upper surface.
Leaves laxly spreading in a dense rosette, 50 to 80 in number: leaf sheaths ovate to broadly elliptic, 8-10 x 6-9 cm, castaneous especially adaxially, densely brown punctate-lepidote especially adaxially; leaf blades narrow triangular, attenuate, 25-40 x 2-3 cm, moderately coriaceous, densely punctate-lepidote especially abaxially, grey to grey-green.