stems erect, 1 1/2–5 in. long, 1/2– 3/4 in. thick, acutely 4–5-angled, green or mottled with purplish; angles compressed, with spreading deltoid acute teeth 1–2 lin. long; flowers 2–3 together near the base of the young stems, developing in succession; pedicels 3–6 lin. long, glabrous; sepals narrowly lanceolate, acuminate, glabrous; corolla somewhat pear-shaped and obtusely pentagonal in bud, with a short acute point and a small conical tooth at each angle; when expanded, about 1 1/2 in. in diam., campanulate, with a slight contraction at the middle, thence gradually passing into the broadly funnel-shaped limb and spreading lobes; outside smooth, pale greenish, spotted with purple; inside minutely papillate, bearded with stiff clavate purple hairs at the throat of the tube, whitish or pale sulphur-yellow, marked with raised blackish-purple or blackish-crimson spots, passing into transverse lines in the tube, which is entirely dark purple at the base; lobes 5–6 lin. long and about as broad at the base, deltoid, acuminate; outer corona-lobes much broader than long, subtruncate, emarginate, blackish, shining; inner corona-lobes subulate, acute, connivent over the style-apex, with recurved tips, slightly gibbous on the back at the base, dark purple. null
