Burmeistera tenuiflora Donn.Sm.

appressed to strongly spreading hyaline to tawny trichomes 0.1-0.3 mm long; petioles short-pubescent, 0.5-1 cm long. Flowers ca. 4 cm long; pedicels solitary in the upper leaf axils, glabrous, spreading to ascendant, stiff, ebracteolate, 4.5-8 cm long; hypanthium in anthesis narrowly turbinate or obconic, basally acute and long-attenuate, glabrous; calyx lobes linear with a blunt tip, entire or in-conspicuously callose-denticulate, glabrous, (7-)11-20 mm long; corolla glabrous or sparsely pubescent externally, greenish or yellowish white, the tube 11-15 mm long, broadest basally and distally, the lobes falcate, the upper lobe 9-10 mm long, the 3 lower lobes ca. 7 mm long; filament tube ca. 2.2 cm long, distally pubescent and otherwise glabrous, basally distinct and completely free from the corolla tube, the upper anthers 5.5-6 mm long, sparsely pilose apically, all anthers sparsely short-pubescent at the base and on the back. Berries little inflated, obovoid, 7-10 mm long, 5 mm in diameter, basally acute; seeds oblong.