plant epiphytic, flowering ca 80 cm tall. leaves ca 25; rosulale, suberect, forming a funnelform rosette at bage; sheath broadly ejljptic, ca 9 x 8 cm, densely and minutely brown-lepidote, abaxially dark castaneous toward base, adaxially purple toward apex; blade sublinear, 26–28 x 4–5 cm; not narrowed toward base, abaxially inconspicuously brown-lepidote, purple, adaxially glabrous, green, densely white-cretaceous mainly adaxially, apex broadly acute and apiculate. inflorescence: peduncle stout; ca 30 cm long, 0.7–1 cm in diameter, erect, reddish-wine, glabrous; peduncle bracts the basal ones subfoliaceous, the upper ones oblong-ovate, broadly acute and minutely apiculate.4–5 x 2 cm; erect and enfolding the peduncle but slightly suberect near the apex; purplish; equaling the internodes; fertile part paniculate; laxly once-branched, ca 37 cm long; ca 6 cm in diameter; erect; plimary bracts broadly ovate to suborbiculate, acute and apiculate, suberect, 20–30 x 20 mm, wine-purple; slightly shorter to equaling the sterile peduncle of the branches; branches ca 11, 6–10 em long, suberect, subdensely 5 to 9-flowered at anthesis; peduncle 15–30 mm long, ca 4 mm in diameter, slighlly complanate, ebracteate, rachis distinctly geniculate, ca 2 mm in diameter, dark red, glabrous, the terminal branch not distinct from the lateral ones; peduncle* ca 33 mm long, bearing a single sterile bract; floral bracts broadly triangular-suborbiculate, 10- 12 x 12 mm, subacute to obtuse, dark red, glabrescent; equaling 1/4 of the sepals length, secund, the basal ones carinate toward apex, the upper ones ecarinate. flowers distichous, nocturnal, distinctly secund at anthesis and subdensely arranged; ca 40 mm long, pedicels stout, ca 7 mm long, green, glabrous; sepals elliptic; ca 20 x 10 m~ apex obtuse; inconspicuously white-lepidote inside, free, ecarinate; yellow; petals narrowly oblanceolate; apex narrowly emarginate; ca 35 x 10 mm, connate at base for ca 3 mm, yellow, bearing at base 2 lanceolate, acuminate, ca 6 x 2 mm appendages. stamens equaling the petals anthers linear, ca 4 mm long; obtuse, dorsifixed near the base. pistil: stigma convolute-blades, densely papillose; yellow, ca 1.5 mm in diameter; ; ovules long caudate.Edited from : Harvard Pap. Bot.. (protologue) .