Chlorospatha gentryi
Terrestrial herb, to ca. 50 cm tall; stem erect, at least 10 cm tall, with remnants of old cataphylls persisting semi-intact along its length and ± fibrous, the fibers pale; internodes 1-2 cm, drying 0.6-1.3 cm diam., dark reddish brown; cataphylls 6-15 cm long, obtuse with acumen at apex, 1-ribbed abaxially, drying ± fibrous, matte to weakly glossy, tan to dark tan or medium-dark brown. LEAVES 2-7, erect-spreading; petioles 12-25 cm long, scurfy-pubescent in apical 1/4-1/2, usually more densely so near apex, drying weakly glossy, dark brown to occasionally almost black, sheathed 4-8 cm, ca. 1/4-1/3 of total length, sheath decurrent at apex; free portion 2-4(5) mm diam. midway (dry); blades 5-7-pedatisect or occasionally obscurely alate between segments, 13-22 cm long, 11-23 cm wide, about as wide as long, thin to thinly coriaceous (dry), bicolorous, the margins of all segments crispate-undulate; upper surface drying weakly glossy to semi-glossy, dark brownish green; lower surface reticulate, drying weakly glossy to semi-glossy, weakly to moderately paler, rarely concolorous; all segments with the margins straight to attenuate toward base, occasionally cuneate, ± acute at base; medial lobe elliptical, 6.5-15.5 cm long, 2.5-6.8 cm wide, 2.3-2.8 times longer than wide, 1.1-3.9 times longer than lateral lobes, acuminate at apex, occasionally equal in length to or weakly shorter than innermost lateral lobes, broadest midway, ± symmetrical, usually free to the base, rarely narrowly attached and weakly confluent with inner-most lateral lobes, the confluent portion ca. 1 mm wide; lateral lobes (2)4.5-15 cm long, (1)1.2-6 cm wide, 2.2-3.7 times longer than wide, acuminate at apex, occasionally acute on outermost 1-2 segments (rarely bluntly acute), broadest at or below middle (rarely above middle), progressively shorter and narrower toward outermost segments, the outermost much smaller than innermost; sides (of lateral lobes) moderately progressively inequilateral, most prominently so on outermost segments, the inner side always narrower; outer side 1.5-2.1 times wider than inner side midway; all orders of venation crispy-puberulent and raised or prominulous on lower surface; midrib round-raised on lower surface, drying raised to weakly flattened, moderately darker than surface; posterior rib naked 1.2-3.5 cm per side, densely scurfy-pubescent; primary lateral veins on all segments (3)4-6 pairs, arising at 25-40°, straight to weakly arcuate, drying weakly raised to ± flattened on lower surface, weakly to moderately darker than surface; secondary veins drying weakly raised on lower surface, weakly darker than surface; tertiary veins drying weakly raised or prominulous on lower surface, weakly darker than surface; reticulate veins drying in part prominulous, otherwise flat on lower surface, concolorous to weakly darker than surface; collective veins 3, the innermost arising from the lowermost lateral vein at base, loop-connected with all preceding lateral veins, occasionally markedly scalloped and remote from margin, 3-15 mm from margin. INFLORESCENCES erect, 2-3 per axil; peduncle held within the sheath, 6.5-10 cm long, 1-1.5 mm diam. (dry), ± crispy-puberulent, most densely so near apex, drying matte to weakly glossy, blackish brown; spathe erect, ca. 4.2 cm long, cuspidate at apex, weakly or not at all constricted between tube and blade; spathe tube green, greenish or whitish, densely crispy-puberulent on outer surface, white on inner surface, 2-2.5 cm long, 3.5-5 mm diam., drying matte to weakly glossy, dark blackish brown on both surfaces, densely cream punctiform on inner surface; spathe blade whitish or yellow, 2-2.4 cm long, 3-3.5 mm diam., narrowly crispy-puberulent along veins toward base abaxially, drying weakly glossy, dark tan to dark brown on outer surface, semi-glossy on inner surface, opening broadly at anthesis, marcescent, erect after anthesis; spadix erect, ca. 3.8 cm long, sessile, adnate to spathe 0.7-1 cm at base, ca. 1,2 of the length of pistillate portion; pistillate portion 1.2-2.2 cm long, drying 2.5-3.5 mm diam., broadest midway, medium reddish brown to dark brown; fertile staminate portion green, ca. 1.4 cm long, drying ca. 2 mm diam., narrowly rounded at apex, cylindrical, weakly pink-tinged medium brown; sterile staminate portion ca. 6 mm long, drying 1-1.75 mm diam., broadest at apex, pale to medium yellowish tan, axis bare 1-1.5 mm at base; pistils ± weakly coherent, 3-4 across the axis (viewed from above), 1-1.2 mm long; ovaries subglobose, 1.5-2 mm diam., drying tan; style disc-like, drying 0.3-0.5 mm diam., narrower than ovary apex, the margins not coherent with those of adjacent styles; stigma ca. 0.1-0.3 mm diam., sessile, disc-like, truncate at apex, drying medium reddish brown to dark blackish brown; synandria ca. 1 mm long, 1-1.3 mm diam., deeply (2)3-4-lobed, (2)3-4-androus, coherent, truncate; sterile flowers drying ca. 0.5 mm long (or less), ca. 1 mm diam., weakly elongated in direction of axis, coherent, truncate, ± prismatic, in 4-5 whorls. INFRUCTESCENCE green, drying 2.5-4.2 cm long, 5-8 mm diam., weakly glossy dark brown to blackish brown. BERRIES green, drying 2-5 mm diam.
Chlorospatha gentryi is known only from the Parque Nacional Natural Las Orquideas in Antioquia Department, Colombia, on the western slopes of the Cordillera Occidental, at 1,200-1,800 m elevation.
Flowering occurs in Chlorospatha gentryi in January and December, with fruiting recorded for the month of December.