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
CATE Araceae, 17 Dec 2011. araceae.e-monocot.org
Flowering is known to occur in Chlorospatha amalfiensis only during the month of February.
Chlorospatha amalfiensis is known only from the type and is endemic to the eastern slopes of the Cordillera Central in Antioquia Department, Colombia, at 1,200-1,300 m elevation. It would be expected to occur elsewhere in the department.
Terrestrial herb, ca. 50 em tall stem (possibly decumbent), length not known, remnants of old cataphylls persisting ± intact at upper nodes (all measurements made from dried material); internodes 1-1.5 em long, 1.2-1.5 em diam., drying matte, medium grayish brown, prominently wrinkled; cataphylls ca. 20 cm long, acuminate at apex, drying semi-glossy, dark reddish brown. LEAVES 5, erect-spreading; petioles 36-37 cm long, drying glabrous, matte to weakly glossy, dark reddish brown, sheathed 20-24 cm (8-12 cm on foliage leaves), ca. l/2 of total length; sheath decurrent at apex; free portion 2-2.5 mm diam., midway; blades sagittate, 19-21 cm long, 11-11.5 cm wide (9.8-10 cm wide at base, measured tip to tip across posterior lobes), 1.7-1.8 times longer than wide, long-acuminate at apex, broadest across anterior lobe, drying thin, weakly bicolorous; upper surface drying matte to weakly glossy, dark yellow-brown, weakly grayish; lower surface drying weakly glossy to semi-glossy; anterior lobe 14.5 cm long, 11-11.5 cm wide, 1.3 times longer than wide, 1.8-2 times longer than posterior lobes, broadest near base, ± symmetrical; posterior lobes directed toward the base, 7-8 cm long, 5.2-5.8 cm wide, 1.3-1.4 times longer than wide, narrowly rounded to bluntly acute at apex, broadest at base, prominently inequilateral, the inner side narrower, ± acute and narrowly confluent with opposite lobe at base, the confluent portion obscuring petiole apex; outer side 3.4-4.5 times wider than inner side midway; midrib and major veins drying weakly raised or flattened on lower surface, moderately darker than surface; basal veins 6, the 1st free to the base, 5 coalesced into a prominent posterior rib, 3 acroscopic, 2 basiscopic; primary lateral veins 2 pairs, arising at 25-32°, weakly arcuate; secondary veins drying weakly raised, weakly darker than lower surface; tertiary veins drying flattened, weakly darker than lower surface; reticulate veins drying obscure, in part weakly darker than lower surface; collective veins 3, the innermost arising from the lower-most lateral vein on inner side of posterior lobe, ± parallel to margin. INFLORESCENCES erect, 5 per axil; peduncle held within the sheath, 18-23 cm long, 1-1.5 mm diam., drying matte to weakly glossy, dark brown; spathe erect, 7-7.5 cm long, cuspidate at apex, weakly or not at all constricted between tube and blade; spathe tube purplish brown on outer surface, 3.8 cm long, 4.5-5 mm diam., drying matte, dark brown; spathe blade white, 3.7 cm long, 4-4.5 mm diam., drying matte, medium reddish brown on outer surface, paler on inner surface, marcescent, erect after anthesis; spadix erect, 5.7 cm long, sessile, adnate to spathe 8 mm at base, ca. l/3 of the length of pistillate portion; pistillate portion 2.2 cm long, 3 mm diam., drying brownish; fertile staminate portion 1.8-1.9 cm long, 3 mm diam., clavate, narrowly rounded at apex, drying medium dark brown; sterile staminate portion 1.3 cm long, 1.5 mm diam., ± cylindrical, drying tan; pistils laxly arranged, ca. 3 across the axis (viewed from above), ca. 1.5-2 mm long; ovaries subglobose, ca. 1 mm long, 1-1.5 mm diam., drying dark brown; style mantle-like, 0.7-1 mm long, ca. 1.5 mm diam., comprising ca. l/2 of the length of pistil, long-attenuate, broadly spreading, appressed to ovary, slightly wider than ovary apex, the margins weakly coherent with margins of adjacent styles; stigma elevated on and weakly broader than narrowed portion of style, ca. 0.3 mm diam., drying dark brown; synandria ca. 1 mm long, 1-1.2 mm diam., coherent, truncate, 3-lobed, 3-androus; sterile flowers ca. 1 mm long, 1 mm diam., subprismatic to irregularly lobed, laxly arranged, in 9 whorls. BERRIES not known.
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
