Plants acaulescent, with leaves in a basal rosette which is about 3.5 to 4.5 cm diam., proliferous from the base and forming large clusters. Leaves about 30, the young erect, little incurved, the old ascending, spreading, incurved, about 20 to 23 mm long, 6 mm broad, up to 3 mm thick, ovate to lanceolate, or sub-oblong, acuminate, green; upper surface flat or subconvex near the base, turgid from above the middle, flattened again at the apex, pellucid, with 6 to 8 darker longitudinal lines joined at the tip, lines tessellately connected; lower surface convex, semi-pellucid, with 5 to 8 dark longitudinal lines, these also tessellately connected; keel 1, centrally positioned, smooth; margins acute, smooth; end-awn 2 mm long, smooth. Inflorescence about 31 cm tall; peduncle simple, terete, about 1 mm diam. below, bracteate; sterile bracts membranous, ovate to acuminate, about 4 mm long, erect, keeled; raceme about 16 cm long, lax, with about 12 spirally arranged flowers and buds, 2 open simultaneously; floral bracts membranous, 4 mm long, deltoid, acute, keeled with broad reddish veins, clasping the pedicels, (equal in length to the pedicels); pedicels 4 mm long, 1 mm diam., green, erect; perianth white with brownish-green keels to the segments, 11 mm long, compressed at base, curved, funnel-shaped, tube more or less 4 mm across, constricted to 3 mm above; segments free to the base, limb 2 lipped; posterior segments erect, slightly recurved, spreading, white with brownish-green veins; exterior part strongly recurved, white, with pale green veins; stamens 7 and 8 mm long, inserted within the perianth tube; ovary 5 mm long, 2 mm diam., green; style 1.5 mm long, curved, capitate.
It grows in mountainous habitats at an altitude of about 900 m, where it receives an annual rainfall of about 125-250 mm mainly during the summer months. It occurs in sheltered positions under low Karoo scrub or rocks, forming large clumps. The summers are hot to very hot, with cold winters and frost. H. batesiana grows in a firm hard soil with pH 7.