Bernal, R., Gradstein, S.R. & Celis, M. (eds.). 2015. Catálogo de plantas y líquenes de Colombia. Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá. http://catalogoplantasdecolombia.unal.edu.co
Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592
CATE Araceae, 17 Dec 2011. araceae.e-monocot.org
Conservation status for Stenospermation monsalvae must be considered as LC (Least Concern) according to IUCN criteria (IUCN, 2001), because it is known from many collections and has been found in both Choco and Valle Departments.
Planta plerumque epiphytica, interdum terrestris; internodia 1–2 cm longa, 7–17 mm diam.; cataphylla decidua; petiolus (5.8)8–15.5 cm longus, teres, acute vel anguste sulcatus, usque ad 0.4–0.7(0.9) partem longitudinis vaginatus; lamina lanceolata vel elliptica, (9)12.5–23.5(28.3) cm longa, 3–5(7) cm lata; inflorescentia 1; pedunculus 20–36.5 cm longus, cernuus; spatha 6.3–13.8 cm longa, viridis; spadix usque 5–12 mm stipitatus, 3.7–9.5(13.5) cm longus, albus, sub anthesi flavescens; stigma ovatum, 0.5–0.7 mm longum; infructescentia 5–9 cm longa; baccae aurantiacae.
The species is known only from the Pacific Andean slopes of Colombia, in the Departments of Choco and Valle, in areas of Tropical rainforest (T-rf) and Tropical rainforest transition to Premontane (T-rf/P), from sea level to 465 m. It has been collected in areas of regrowth forest and primary forest.
Usually epiphytic, occasionally terrestrial; stem appressed-climbing, or scandent; internodes short, 1–2 cm x 7–17 mm, semiglossy, yellow-green becoming brown, drying dark brown; cataphylls 3.5–11.5 cm, apiculate at apex, drying dark brown, deciduous. LEAVES erect to spreading; petioles (5.8)8–15.5 cm x 1–3 mm (dry), terete, sharply to narrowly sulcate; sheath 4–10.8 cm, 0.4–0.7(0.9) times as long as petiole, one side acute and the other rounded at apex, medium green with scarious margin, drying dark brown with pale margin; blades lanceolate to elliptic, subcoriaceous, abruptly acuminate at apex (acumen downturned), usually attenuate, sometimes cuneate, or rarely rounded at base, (9)12.5–23.5(28.3) x 3–5(7) cm, 3.2–5.9(6.7) times longer than wide, 1.2–1.8(2.3) times longer than petiole, broadest near middle, upper surface semiglossy to glossy, dark green, weakly bicolorous, drying dull, reddish brown to olive-brown, lower surface drying semiglossy and paler than above; midrib narrowly sunken, sometimes weakly discolored along margin above, convex and paler below, drying slightly darker than surface below; primary lateral veins numerous, obscure, departing midrib at 25o–30o angles, drying barely raised below or obscure on both sides. INFLORESCENCE 1 per axil, spreading to pendulous; peduncle 20–36.5 cm x 1–3 mm (dry), cernuous, drying medium to dark or reddish brown; spathe 6.3–13.8 cm, green, abruptly acuminate to long-tapered; spadix stipitate 5–12 mm, cylindrical, 3.7–9.5(13.5) cm x 6–8 mm, white becoming yellow at anthesis. Flowers hexagonal, surface of ovary with numerous short white raphides; stigma ovate, 0.5–0.7 mm diam.; stamens with filaments to 1.8 mm; thecae oblong. INFRUCTESCENCE 5–9 x 1–1.5 cm (dry); berries orange, surface of ovary drying pale white with numerous dark red punctations (under 106 magnification); seeds oblong to clavate, 2.1–2.3 mm.
