plant robust, branching; branches 4-angled, 3/4–1 in. square exclusive of the teeth, glabrous; teeth 1/3– 1/2 in. long, stout, conical, with hard spine-like tips, horizontal or slightly recurved; flowers in clusters of 8–10 (or more?) along the grooves between the angles of the branches, several open together; pedicels 2 lin. long, stout; sepals 1/8 in. long, lanceolate, acuminate; corolla-tube about 1/8 in. long, campanulate, greenish-yellow; lobes 1/3 in. long, about 2 lin. broad, somewhat spreading, lanceolate, acute, with the margins folded back, glabrous and not ciliate, greenish-white on the back, dark purple-brown or blackish-purple on the apical half of the inner face and greenish-yellow dotted with purple on the basal half; outercorona about equalling the staminal column, cup-shaped, subtruncate, with 5 slight and broad erose crenations opposite and raised above the base of the inner corona-lobes and 5 pairs of minute teeth alternating with them, alternately blackish-purple and purple-brown in colour; inner corona-lobes linear-oblong, notched at the apex, closely incumbent on the anthers and not produced beyond them. null