plant 3–4 in. high, with 3–4 cylindric or cylindric-ovoid branches 1 1/2–1 3/4 in. thick, narrowed below, obtuse, covered with crowded obtuse tubercles 2–3 lin. in diam., tipped with a minute point seated in a small depression, glabrous, pale greyish; flowers 2–5 together between the tubercles, subsessile or with pedicels up to 1/2 lin. long, developing successively; sepals 1/2 lin. long, 1/2– 2/3 lin. broad, broadly ovate, acute, glabrous; corolla flat-topped and very shortly pointed in bud, when expanded about 4 lin. in diam., lobed to half-way down, without a distinct tube, the united part flattish or saucer-shaped, glabrous and smooth outside and within, not ciliate; lobes spreading, 1 1/3 lin. long and broad, nearly like an equilateral triangle in outline, acute, dark purple-brown (Marloth); outer corona divided into 10 filiform-subulate teeth 1/2 lin. long, arranged in pairs behind the inner corona-lobes, very spreading, curving towards each other; inner corona-lobes 1/2 lin. long, linear, obtuse, closely incumbent on the backs of the anthers and produced beyond them, with the tips probably connivent-erect. null