Hemi-epiphytic vine. Stem apex pale green becoming greenish-grey in the mature parts, internodes 1-10 cm long. Prophyll 17.5 x 1.55 cm, linear-triangular, pale green. LEAVES: Petiole 8-27 cm long. Leaf blade 15-32 x 4-12 cm, elliptic, oblong to ovate-oblong, apex acute, base rounded to almost cuneate, distinctly paler on lower surface, chartaceous; anterior division 13.5-29 x 4-12 cm, primary lateral veins 4-5 per side, weakly differentiated; posterior divisions 1.5-3 x 2-6 cm or absent. INFLORESCENCE: 1 per floral sympodium, peduncle 4 cm long. Spathe 11-13 x 3.5 cm, boat-shaped, curved, weakly constricted, green with vinaceous grooves, blade creamish-green to cream outside, cream inside. Spadix curved, 6-13 cm long, male zone 4-6.5 cm long, greenish-cream; intermediate male sterile zone 0.5-2 cm long, cream; apical male sterile zone 0.2-0.5cm long, cream; female zone 2.8-4.5 cm long, pale green. Flowers: stamens 1.5-2 x 1.5-1.8 mm; apical staminodes 1.5-2 x 1.5-1.8 mm; intermediate staminodes 2.5-3 x 1.8-2 mm; gynoecium 3.5 x 2.5 mm, green to creamish green, ovary 10-12-locular, ovules 4 per locule, placentation sub-basal. Berries not seen. Fig. 5. D-E.
Critically Endangered (CR), B1, a, b (i, iii); extent of occurence < 100 km2. This species occurs only at relatively high elevations in the Atlantic forest and is known from scattered localities. The populations in Espírito Santo are at great risk, because much of the original vegetation has been destroyed, and the species has not been collected in that state for the past 20 years, despite considerable collecting efforts by the first author. In Rio de Janeiro there is a population protected in the Reserva Ecológica de Macaé de Cima.