pruinose


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pruinose

(pro͞o′ə-nōs′)
adj. Botany
Having a white, powdery covering or bloom.

pruinose

(of plant structures) covered with a whitish bloom.
References in periodicals archive ?
Head covered with yellow pruinosity, except upper two-thirds of facial ridge yellowish-grey pruinose; ocellar seta short but well differentiated from ocellar triangle setulae; scutellar dorsum moderate grey to light brownish-grey pruinosity when viewed from certain angles; calypters yellow with faint yellow pruinosity; abdomen in posterodorsal view reddish-brown except most of syntergite 1+2 and middle of tergites 3 and 4 dark brown.
Basidiocarp resupinate, effused, adnate, up to 140 [micro]m thick in section; hymenial surface smooth, grayish white to yellowish white when fresh, not changing much on drying; margins thinning, pruinose, paler concolorous, to indeterminate.
Head yellow, golden pruinose; vertex dark brown, golden pruinose.
2A-F): Species fall into two main groups--12 species (adonis, argolagon, baringo, harlequini, hyalipennis, kochi, nigripennis, penicillatus, snowi, superciliatus, torsteni, trichopteron) with the occiput entirely pruinose (condition A), and those possessing apruinose occipital areas.
Frons yellowish pruinose, except for two lateral brown "Y" shaped stripes.
Stipe 6.3x0.18 cm, grayish, cylindrical, firm, smooth; thick, equal, reddish brown with a grayish to pruinose covering, hollow, striate at the apex, Context grayish, dark brown under stipipellis, without volva and annulus ring, partial veil absent.
Abdominal sterna II, III and lateral parts of IV heavily punctured, the others without punctation, covered with short, appressed macrotrichia, some parts pruinose. Terminalia smooth, segment IX, ventral laterotergites VIII, ventrolateral plates (particularly on ventral face) and valvular projections with long and strong macrotrichia.
Old thalli can be pruinose and develop minute cracks, often with dark-brown or blackish, [+ or -] urceolate apothecia.
pohliana Mez: plant smaller, rosette secund, leaves shorter and narrower, pruinose lepidote, the margins with asymmetric trichomes.
cornea is 50-120 mm (2.4-4") broad and 1-2 mm (0.03-0.07") thick, ear shaped to convex fan shaped, texture is rubbery, upper surface is smooth to wrinkled, to velvety, with the lower surface smooth to veined, glabrous to pruinose, grayish brown to purplish brown, over all white to the tomentum.
The blue-gray, pruinose apothecia and green leprose thallus are good diagnostic features of this lichen.