Heteropterys macrostachya A.Juss.

peduncles to ca. 7 mm long, bibracteolate at the apex, the bracteoles pubescent, stiffly erect, to ca. 1 mm long; pedicels less than 2 mm long, articulate to the peduncle. Flowers ca. 1 cm diam., calyx lobes erect, narrowly ovate, 4 of them bearing conspicuous fleshy, gray glands, 2-3 mm long, glabrous on the outside, the thin surface rupturing, at least on drying, densely puberulent within; petals yellow, oblong-elliptic, 3.5-4 mm long, 2.2 mm wide, stamens to 3 mm long, the staminal tube glabrous to sparsely villous, the free part of the filaments less than 1 mm long, the anthers ca. 1 mm long; styles to ca. 2 mm long, glabrous, the apex truncate, triangular, the ovaries ovoid, 2-4 mm long, densely reddish-brown pubescent.