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
Chlorospatha antioquiensis is endemic to the eastern and western slopes of the Cordillera Central in Antioquia Dept., Colombia, to the north and south of Medellin, at 1,800-3,000 m elevation, 3,000 m being the highest elevation recorded for the genus.
Terrestrial or hemiepiphytic herb, 50-60 cm tall; stem decumbent, at least 20 cm long, remnants of old leaf bases and cataphylls persisting intact along its length (all measurements made from dried material); internodes 1.5-3 cm long, 0.6-1.3(4) cm diam., drying weakly glossy, dark brownish green; cataphylls 11-24 cm long, obtuse with acumen at apex, drying weakly glossy to semi-glossy, medium to dark reddish brown. LEAVES 2-4, erect-spreading; petioles 29-52 cm long, drying glabrous, weakly glossy to semi-glossy, medium-dark to dark reddish brown or almost black, with epidermis in part separated ± intact and semi-transparent, sheathed 17-31 cm, more than l/2 of total length; sheath free-ending at apex; free portion 2-5 mm diam. midway; blades sagittate and broadly triangular or ovate-sagittate, (16.5)20-26 cm long, 8.5-14.5 cm wide, 1.9-2.2 times longer than wide, gradually to scarcely acuminate at apex, occasionally abruptly acuminate, usually broadest at base, rarely weakly narrower, (0.8)1.1 times wider at base than across anterior lobe (measured tip to tip across posterior lobes), weakly or not at all constricted in area of petiole attachment (at least on one side), drying thin, weakly to moderately bicolorous, occasionally concolorous; upper surface drying matte, medium to dark yellow-green to olive-green; lower surface drying semi-glossy to glossy; anterior lobe (11)14-17 cm long, (7.5)9-14.5 cm wide, 1.1-1.5 times longer than wide, 1.4-1.9 times longer than posterior lobes, broadest near base, ± symmetrical; posterior lobes directed toward the base or weakly outward, (6.1)7.3-11 cm long, (3.2)4-6.8 cm wide, 1.5-1.9 times longer than wide, bluntly acute to narrowly rounded or rarely bluntly rounded at apex, broadest midway, weakly broader than at base, weakly inequilateral, the inner side narrower, ± rounded at base, briefly attenuate and frequently weakly confluent with opposite lobe, the confluent portion obscuring apex of petiole; outer side ± straight toward base; midrib and major venation drying ± flattened on lower surface, usually moderately darker to much darker than surface, rarely weakly darker; midrib round-raised on lower surface; basal veins 3-5 pairs, coalesced into a prominent posterior rib; primary lateral veins 4-7 pairs, arising at 50-65(90)°, weakly arcuate or straight, convex on lower surface; secondary veins drying in part weakly raised or prominulous on lower surface, otherwise ± flattened, in part concolorous, otherwise weakly darker than surface; tertiary veins drying visible, ± flat on lower surface, in part weakly darker than surface, otherwise concolorous; reticulate veins drying in part visible on lower surface; collective veins 3, the innermost arising from apex of posterior rib or from one of the lateral veins on inner side of posterior lobe, ± parallel to margin, occasionally moderately scalloped, 4-6(12) mm from margin. INFLORESCENCES erect, 2 per axil; peduncle held within the sheath, (21)26-29 cm long, ca. 2 mm diam., drying matte to weakly glossy, medium-dark brown; spathe erect, 7.2-9 cm long, abruptly acuminate at apex, weakly or not at all constricted between tube and blade; spathe tube green or pale green on outer surface, 2.8-4 cm long, 3-5 mm diam., drying matte, dark reddish brown on outer surface, weakly glossy and paler on inner surface; spathe blade green or yellow, 4.5-6 cm long, 5-7 mm diam. (ca. 2 cm wide when flattened), drying matte, pale to medium reddish tan on both surfaces, marcescent, erect after anthesis; spadix erect, (6)6.5--8.4 cm long, sessile, adnate to spathe 2.6-3 cm at base, the entire length of pistillate portion; pistillate portion green or white, 2.6-3 cm long, 2.5-3.5 mm diam., drying reddish brown; fertile staminate portion red, yellow or green, 3-5.1 cm long, 3-6 mm diam., cylindrical or tapering, frequently curving forward, acute to narrowly rounded at apex, drying dark reddish brown; sterile portion 7-10 mm long, 2-4 mm diam., axis naked 1-1.5 mm at base, broadest at apex, rarely broadest at base, drying medium reddish brown; pistils weakly coherent, 3-4 across axis (viewed from above), ca. 2 mm long; ovary subglobose, 1-1.5 mm long, 1.5-2 mm diam., drying creamy tan with darker veins; style mantle-like, ca. 0.6 mm long, ca. 2 mm diam., comprising ca. 1/3 of the length of pistil, briefly attenuate, the attenuate portion less than 0.5 mm long, the mantle broadly spreading, prominently wider than ovary apex, the margins weakly coherent with margins of adjacent styles; stigma weakly elevated on and drying weakly broader than narrowed portion of style; synandria 1-1. 5 mm long, 1-1.5 mm diam., coherent, truncate, 3-4(5)-lobed, mostly 3-4-androus; sterile flowers 1-1.5 mm long, 1.5-2 mm X 1-1.5 mm diam., ± elongated in direction of axis, coherent, truncate, irregularly subprismatic, in ca. 5 whorls. BERRIES green.
Flowering occurs in Chlorospatha antioquiensis in March, April, October and November.
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
