membranaceous


Also found in: Dictionary, Thesaurus, Encyclopedia.

mem·bra·nous

(mem'bră-nŭs),
Relating to or of the form of a membrane.
Synonym(s): hymenoid (1) , membranaceous

membranaceous

adjective Referring to or having a membrane.
References in periodicals archive ?
5-3 cm, dark green above, light green below, membranaceous, central vein yellowish on both sides, lateral veins 8-11 per side, plane to prominulous on both sides, margin entire, plane, base attenuate, apex acuminate.
Leaves with petiole, 4-7(-9) cm long, sheathing the young shoots, petiolar margins membranaceous, translucid, extending through 2/3 of the petiole, glabrous or minutely pubescent, with lustrose appearance; leaf blades (13-)15-27(-45) cm long, 12-21(-26) cm wide, dimorphic through the sympodial axis, monopodial leaves ovate or widely ovate, cordate and slightly auriculate at the base, with the lobes almost symmetrical; sympodial leaves elliptic-ovate, cordate to deeply auriculate at the base, with the lobes asymmetrical, the bigger lobe half or completely overlapping the petiole; obtuse to shortly acuminate at the apex, ciliate at the margin, minutely pubescent in both surfaces; pinnately nerved, veins 4-8, inconspicuously punctate pellucid; membranaceous, with a matt appearance.
4c-f), they are membranaceous with some faint veins, small, cucullate ("hooded") and possibly clawed, between 3.
cissoides showed ovate-elliptical shaped leaves of 7x4cm, with a membranaceous consistency and the presence of three main veins with prickle-like structures on the abaxial face (Fig.
opposite amplexicaule scale--like leaves, fused to form a collar--like segment, with a membranaceous / scarious hyaline margin 0.
Inflorescence broadly capitate, simple, umbellate, apex nearly flat, sunk in the center of the rosette, 8-9 cm long (excluding the petals), 9-12 mm in diameter, 56 to 65-flowered; floral bracts entire to remotely denticulate at the apex, green, membranaceous, distinctly nerved, longitudinally sulcate mainly near the apex, sparsely to subdensely white-lepidote outside, glabrous inside, the outer ones resembling the involucral bracts, ecarinate, slightly exceeding the ovary, the inner ones narrowly ovate-lanceolate to sublinear-lanceolate, acuminate, ecarinate or bearing a protruded central nerve and appearing carinate, 45-60 x 8-20 mm, slightly exceeding the ovary.
The popular Chinese herb Astragalus membranaceous, traditionally used to help manage viral infections such as the common cold, has shown some evidence of immune stimulation and antiviral effects (Block 2003, Yesilada 2005, Guo 2004).
Upon examination under microscopy it was observed to be plectomycetes characterized by the production of cleistothecia scattered or gregarious, nonstromatic, obpyriforme, globose to subglobose, 150-275 [micro]m in diameter, hyaline at first, becoming creamy or yellowish, glabrous peridium membranaceous pseudoparenchymatosum, consisting of texture angularis to globulose, with cells measuring 4-12 x 2.
validus, from which it differs by its yellow-brown overall color, smooth sternum and lack of male abdominal pattern, by the very small, pointed RTA, by the male bulbus having a conspicuous basal bump and a long and pointed, prolaterally curved embolus adjacent to a transparent, flat, membranaceous conductor (Figs.
Leaves with petiole 10-13 mm long, glabrous; blade ovate, 44 mm x 42 mm, 3-5-lobate, the lobes lanceolate-ovate, membranaceous, papillose and glabrous on both sides, except puberulent to villose on the veins adaxially and puberulent on the nerves abaxially.
In Tripterocalyx, the anthocarp enlarges greatly, hardens, and develops three or four large, membranaceous wings.
5 cm, concolorous, chartaceous to membranaceous, elliptic or oblong, apex acuminatte, rarely rounded, margins entire, base rounded to cuneate, venation penninerved, both surfaces with tector trichomes restricted on the midrib; tendrils simple.

Full browser ?