Herb, 8-40 cm tall, rarely branched. Stems and branches H 0.1 cm in diam.; internodes 0.8-5 cm, shorter at base. Leaves much shorter (usually < 1/2) than internodes; blade linear to narrowly ovate/narrowly elliptic, (0.3-)0.5-2 x 0.1-0.4 cm, apex acute, primary vein distinct. Inflorescence usually terminal, rarely axillary, 1-4-flowered modified dichasium; bracts 7-20 mm long, more or less as long as upper leaves, bracteoles 5-20 mm; pedicels 8-50 mm long. Flowers erect to slightly nodding; calyx green, lobes rarely yellowish, (8-)16-18(-23) mm long, 4-ribbed, connation at least for 1/2 of its length, lobes narrowly triangular to triangular, (4-)6-10 x 1-2 cm, longer than corolla tube, margin entire, membranous, apex acuminate to narrowly acute, ribs 0.1-0.3(-0.8) mm; corolla salmon pink to yellow-orange, sometimes somewhat paler on inside, tubular to salver-shaped, (11-)22-26(-33) mm long, connation at least for 2/3 of its length, lobes oblong to ovate, (4-)7-8(-15) x (2-)6-8(-10) mm, margin entire to irregularly denticulate, slightly undulating, apex rounded to acuminate; stamens longest ones to top of corolla tube, 3-8 mm long, longest one ca. same length as style+stigma, subequal, sometimes 2 somewhat longer, inserted on corolla tube 1/2-2/3 from base, filaments white, (2-)4-5 mm long, straight, at base somewhat flattened, without dentate appendages, anthers white, narrowly ellipsoid to narrowly oblong, (1-)2-3 mm; pistil 15-20(-30) mm long, ovary narrowly ellipsoid to ellipsoid, (3-)5-8 x 1-2(-3) mm, dark disk-like ring at base, style white, 10-12 mm long, longer than corolla tube, stigma yellow, lobes broadly ovate, 0.8-2.3 mm long. Fruit narrowly ellipsoid to ovoid, 3-9 mm long, calyx and corolla persistent.
Bolivar present, Guianas present, Guyana present, Guárico present, Rupununi Savanna present, Sipaliwini Savanna, Kayser Airstrip present, Southern America: Venezuela (Venezuela present), Suriname present
Venezuela (Bolívar, Guàrico), Guyana (Rupununi Savanna), Suriname (Sipaliwini Savanna, Kayser Airstrip), Brazil; 9 collections studied, of which 7 from the Guianas (GU: 1; SU: 6).