Monographs Details: Thibaudia sessiliflora (A.C.Sm.) Luteyn
Authority: 1996. Fl. Ecuador. 54: 295.
Description:Species Description - Epiphytic shrub to 3 m; stem subterete, bluntly angled, striate, nitid, lightly puberulent, glabrate, the new twigs surrounded by chartaceous, striate, linear-lanceolate, long-acuminate, densely glandular-fimbriate dorsally bracts 15-20 x 2-3 mm; twigs subterete, complanate, angled, densely covered by dark brown, glandular fimbriae, ca. 0.2 mm long. Leaves coriaceous, narrowly lanceolate to elliptic-lanceolate, (12-)20-28 x (3-)5-7.5 cm, base cuneate or obtuse and short-attenuate to broadly obtuse or rounded, apex long-acuminate with a 1-2 cm long acumen, glabrous but glandular-fimbriate on both surfaces with dark brown to black hairs 0.2-0.3 mm long especially dense beneath; 5-7-plinerved with the inner pair of lateral nerves arising 3.5-4.5 cm above the base, midrib thickened and slightly raised in the proximal 3.5-4.5 cm, then impressed distally above, raised and prominent beneath, lateral nerves impressed above and raised beneath, reticulate veinlets slightly impressed above and beneath but not prominent; petiole subterete, rugose, ribbed, stout, 5-12 mm long and 3-4 mm diam., glabrous but deciduously densely glandular-fimbriate when young. Inflorescence axillary but sometimes borne on older branches after the leaves have fallen (then ramiflorous), fasciculate, seemingly 2-4-flowered, surrounded at its base by a series of narrowly triangular (smallest) to lanceolate or linear-lanceolate (largest), acute to long-acuminate respectively, conspicuously striate, obscurely glandular-margined, bracts 10-15 x 2-3 mm; floral bract narrowly triangular, lanceolate, or linear-lanceolate, long-acuminate, striate, 12-13 x 2-2.5 mm, margin sparsely glandular-fimbriate; pedicel 0-2.5 mm long, flowers sessile to subsessile; bracteoles basal, linear-subulate, 7-10 x 0.5-1.5 mm, margin glandular-fimbriate. Flowers with calyx continuous with pedicel, the calyx 5.5-7 mm long, glabrous but glandular-fimbriate; hypanthium 5-angular, 2.5-4.5 mm long; limb erect, 3-4.5 mm long, longer than hypanthium, deeply parted almost to the base; lobes elongate-deltate, acute to acuminate, 2.5-4 mm long; corolla carnose, tubular but narrowly 5-winged, 13-15 x ca. 4 mm, densely glandular-fimbriate, the wings ca. 0.7 mm broad at the middle and glandular-fimbriate along the edge, red, the lobes deltate, subacute, 1-2 mm long, white; stamen equalling the corolla, 12-13.3 mm long; filaments connate, 2.5-3.3 mm long, obscurely marginally puberulent above; anthers 8-11.3 mm long; thecae 3-4.5 mm long, basally mucronate and there coherent; tubules longer than thecae, 5-7.5 mm long, dehiscing through elongate clefts; style 13-14 mm long, glabrous, equalling corolla. Berry not seen.
Distribution and Ecology - Endemic to Ecuador and known only from 4 collections; rainforest and premontane forest, at 500-1600 m altitude.