Plants acaulescent, with leaves in a basal rosette which is about 4 cm diam., not or slowly proliferous from the base. Leaves about 35, green, the young erect, incurved, the old somewhat spreading, incurved, about 27 cm long, 7 mm broad, up to 1.5 mm thick, lanceolate acuminate; upper surface slightly convex below, the upper flat with 3 to 4 reticulate lines, smooth; lower surface convex, smooth, with 4 to 6 indistinct parallel lines; keel 1, centrally positioned in the upper third, with a few 1 mm long teeth; margins acute, with a row of about 1 mm long pellucid, deltoid to cuspidate teeth; end-awn 1 mm long, smooth. Inflorescence about 33 cm tall; peduncle simple, terete, about 1 mm diam., about 23 cm long, bracteate; sterile bracts membranous, ovate, acuminate, about 6 mm long, erect, keeled; raceme about 10 cm long, lax, with about 12 spirally arranged flowers and buds, 1 or 2 open simultaneously; floral bracts membranous, 5 mm long, deltoid, acute, keeled with broad brown veins, clasping the pedicels, (equal in length to the pedicels); pedicels 5 mm long, 0.5 mm diam., green, erect; perianth white, with brown keels to the segments, 15 mm long, compressed at base, funnel-shaped, tube more or less 4 mm across, constricted to 3 mm above, curved; segments free to the base, limb 2 lipped; posterior segments slightly recurved, little spreading, white with brown veins; exterior part recurved, spreading, white with brown veins; stamens 6 of two lengths 5 and 6 mm long, inserted within the perianth tube; ovary 4 mm long; style 1.5 mm long, curved, capitate.
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Acaulescent succulent, usually with solitary, compact rosettes. Leaves bright green, reticulate, sharply spiny, erect. Flowers white.