stems erect, decumbent at the base, 1 1/2–3 in. long, 3–5 lin. thick (excluding the teeth), obtusely 4-angled, with spreading conical acute teeth 1 1/2–3 lin. long, glabrous, green; flowers 1–3 together near the base of the young stems, developing successively; pedicels 1/2–1 1/4 in. long, spreading, glabrous; sepals 2 1/2–5 lin. long, lanceolate or ovate-lanceolate, acuminate, glabrous; corolla in bud conically pointed, with a depressed-ovate pentagonal basal part, when expanded 1 3/4–2 1/2 in. in diam., lobed to more than half-way down, with the united part saucer or shallowly basin-shaped, 2–3 lin. deep outside, having a distinct slightly raised pentagonal solid annulus surrounding the corona, about 1/2 lin. high, convex at the top, with 5 distinct channels radiating from the centre to its angles; lobes recurved-spreading, 8–10 lin. long, 6–8 lin. broad, deltoid-ovate, very acute or acuminate, not ciliate; all parts glabrous or with some short erect hairs at the very base under and concealed by the corona, smooth outside, very rugose with small papilla-like tubercles or very short irregular transverse ridges on the inner surface, pale yellow, covered with small dark blood-red spots, smaller and more crowded on the annulus, with the area around the corona entirely dark purple or purple-brown; outer corona-lobes horizontally or slightly deflexed-spreading, about 3/4 lin. long and broad, subquadrate, acutely bifid, with (always?) a minute tooth at the base of the broadly rounded notch, dark chocolate, with yellowish margins? inner corona-lobes about 1 lin. long from the shoulder, subhorizontally incumbent upon the backs of the anthers and slightly longer than them, but not or scarcely erect at the tips, ovate-lanceolate, acuminate, slightly gibbous on the back at the base, yellow, with the gibbosity and probably the margins purple-brown. null