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Florets isomorphic, bisexual, corolla actinomorphic, tubular-funnelform, deeply five-lobed, tube ten- to 15-nerved, lobes strongly coiled to less commonly flexuous; anthers sometimes green to purplish, exserted, apical appendages acuminate, tails smooth to papillose, often connate with the tails of adjacent stamens; style sometimes reddish, bilobed, branches dorsally papillose much below the bifurcation point.
Terminal hairs with 4-7 close spirals accompanied with a few long, flexuous hairs, forming a relatively compact head, Ascospore size 6-7.5 x 5.5-6.5 [micro]m...C.brasiliense
Hysterothecia gregarious, superficial, straight or flexuous, 0.57-2.28 x 0.19-0.38 mm; pseudoparaphyses hyaline, abundant, filiform, longer than asci; asci cylindrical-claviform, 4-5(-6-8)-spored, 100-105 x 18-20 [micro]m; ascospores brown, muriform, not parenchymatic, with 6-8 transverse and 1 longitudinal septa, broadly ellipsoid, tapered to the lower part, constricted at the median septum, slightly inequilateral, 22-28 x 6-10 [micro]m.
Hysterothecia single or gregarious, erumpent, superficial, straight to flexuous, surface usually striate, 0.4-2 x 0.2-0.4 mm; pseudoparaphyses hyaline, abundant, filiform, branched, longer than asci; epithecium compact; asci clavate to cylindrical, 8-spored, (55-)70-170 x 10-18 [micro]m; ascospores yellow-brown to reddish brown, uniseriate to partially biseriate, muriform, not parenchymatic, with [3-5(-7)] transverse and 1 longitudinal septa, ellipsoid to obovoid, sometimes slightly inequilateral, constricted at the median septum, (12-)15-24(-26) x (5-)6-10(-11) [micro]m.
PVY is a member of the family Potyviridae with non-enveloped filamentous flexuous rods virions.
Roots flexuous. Pseudobulbs ovoid-elliptic, to 5 cm long, about 2.5 cm wide, diphyllous.
The flexuous particles are inserted into the cristae.
80-110 cm long, 10-12 cm wide (excluding the petals), suberect, 30 to 40-flowered, rachis stout, 0.4-0.8 cm in diameter, terete, flexuous to slightly geniculate toward the apex, green to wine colored, glabrous, internodes 1.5-4.5 cm long; floral bracts broadly elliptic to broadly ovate, 40-46 x 32-33 mm, apex subacute to obtuse, pale castaneous centrally and near the base and wine colored toward the apex and margins, inconspicuously and sparsely brown lepidote inside, glabrous outside but covered by white epicuticular white wax, not completely enfolding the sepals and equaling 2/3 of its length, convex, longitudinally sulcate in late anthesis and afterwards, ecarinate, the upper ones imbricate in early anthesis.
Inflorescence terminal, umbellate, 5-19 cm long, 3-7 cm wide, with 6-10 primary involucral bracts, the lowermost 1-2 leaf-like and exceeding the inflorescence, the uppermost setaceous, lowest involucral bract 10-30 cm long, 1.5-2.6 times as long as the inflorescence; primary rays 5-15 ascending to curving with age, at least the thinnest more or less flexuous, flattened or compressed-trigonous, antrorsely scabrous on margins distally, smooth proximally, the longest 5-11 cm, second, third, and occasionally fourth order branching present, with the spikelets ultimately sessile or rarely short-peduncled (< 5 mm) in fascicles of 2-7 or rarely solitary at tips of primary or second order branches.
Spikes arching-pendulous, laxly distichously 3-8-flowered, 1-3.5 cm long, 0.6 cm wide, rachis exposed by the bracts, flexuous to geniculate, subterete, internodes 3-5 mm, green, lepidote; stipes 1-1.5 cm long, without sterile bracts, subterete; floralbracts 3-5 mm long, 4,5 mm wide, ovate, apiculate and the apex incurved, in the upper part carinate, densely cinereous-lepidote, much shorter than the sepals, remote to each other, cinereous-green.
0.8 cm in diameter, slightly flexuous, sulcate, terete, green, densely white-lanate; primary bracts strongly spreading or nearly so, many times longer than the fascicles but reduced in size toward the inflorescence apex, the basal ones foliaceous to subfoliaceous and resembling the scape bracts, the upper ones narrowly ovate-triangular, long acuminate-caudate, 8-16 x 2.8-3.2 cm, densely and coarsely white-lepidote on both sides to glabrescent, greenish toward the base and dark red toward the apex, distinctly nerved abaxially, densely to laxly spinulose, spines narrowly triangular, acicular, 2-4 mm long, ca.
31-flowered, rachis flexuous to geniculate, subterete to slightly if at all angulose, 2-4 x 0.5-0.8 cm, glabrous, covered by white epicuticular wax not obscuring its dark purplish-wine to dark green color, stipes ca.