Haworthia blackburniae W.F.Barker

Plants caulescent, about 150 mm tall, stem short, simple, up to 10 mm thick; roots fusiform, up to 12 mm thick. Leaves up to 10, the young erect, the old spreading, narrow, linear, smooth; upper surface grooved, smooth; lower surface convex to very bluntly carinate; margins somewhat acute, minutely toothed with deltoid teeth. Inflorescence about 220 mm tall; peduncle simple, terete, about 1.5 mm diam., up to 100 mm long, bracteate; sterile bracts membranous, acute, 6 mm long, ovate acuminate, erect, keeled; raceme about 120 mm long, lax, with about 14 spirally arranged flowers and buds, 2 to 3 open simultaneously; floral bracts membranous, up to 6 mm long, ovate, acute, keeled with reddish-brown veins, clasping the pedicels, (longer than the pedicels); pedicels 3 mm long, 2 mm diam., light brown, erect; perianth white with brown keels to the segments, 15 mm long, compressed at base, funnel-shaped; tube more or less 3 mm across, not constricted, curved; segments free to the base, limb 2 lipped; posterior segments recurved, white with brown veins; exterior part strongly recurved, spreading, white with brown veins; stamens 6 of two lengths, 4 and 5 mm long, inserted within the perianth tube; ovary 2 mm long, 1 mm diam., light green; style 1.25 mm long, curved, 1 mm diam., capitate.