Plants caulescent, about 45 cm high, (often 35 cm long with an additional 10 cm of the upper end of the leaves dry), roots fusiform, up to 12 mm diam., about 8 cm long; stem simple up to 4 cm long. Leaves about 14, the young erect, the old spreading, about 45 cm long, up to 3 mm broad, up to 1.5 mm thick; upper surface broadly ‘V’ shaped, smooth, dull green; tower surface rounded, smooth, with 4 to 5 raised concolorous lines becoming less distinct towards the apex, and on which occur small longitudinal oblong whitish tubercles, of which a few are minutely toothed; margins somewhat acute, minutely toothed. Inflorescence up to 63 cm tall; peduncle simple, terete, about 1.5 mm diam., 43 cm long, bracteate; sterile bracts about 9 and about 5 mm long, deltoid, abruptly long acuminate; raceme about 20 cm long, lax, with about 18 flowers and buds, 2 to 3 flowers open simultaneously; floral bracts membranous, 2.5 mm long, keeled with fine greenish veins, clasping the pedicels, (shorter than the pedicels); pedicels 4 mm long, 0.5 mm diam., erect; perianth white with green keels to the segments, 12 mm long, compressed at base, funnel-shaped, curved; tube more or less 3 mm across, constricted to 2 mm above; segments free to the base, limb 2 lipped; posterior segments slightly recurved, spreading, with brownish veins; exterior part little recurved, spreading, white with green veins; stamens 6 of two lengths 2.5 and 3.5 mm long, inserted within the perianth tube; ovary 2.5 mm long, 1.75 mm diam., green; style 1 mm long, straight, capitate.
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