Chlorospatha luteynii Croat & L.P.Hannon

Terrestrial herb, to 1 m tall; stem not known; internodes not known (all measurements made from dried material); cataphylls not known. LEAVES 2-3, erect-spreading; petioles 40-90 cm long, glabrous, drying glossy, dark blackish brown, the epidermis in part separated ± intact, semi-transparent, sheathed 20-55 cm, 1/2 or more of total length; sheath decurrent at apex; free portion 4-6 mm diam. midway; blades deeply 5-lobed, occasionally weakly auriculate on outermost segments, ca. 35 cm long, ca. 31-40 cm wide, almost as wide as long, drying thin, weakly bicolorous; upper surface dark green, irregularly pale yellow-green-maculate (maculations 7-30 mm long, 3-12 mm wide), drying (matte)weakly glossy to semi-glossy, dark green to olive-green, maculations paler than surface; lower surface drying semi-glossy to glossy, maculations weakly paler than surface or not visible; medial lobe 24-31 cm long, 12-16 cm wide, 1.8-2.5 times longer than wide, abruptly acuminate at apex, broadest at or slightly above middle, cuneate and narrowly attached at base, 3-4 cm wide at point of attachment, ± symmetrical; lateral lobes confluent with all adjacent lobes, the confluent portion 1.5-4 cm wide; innermost segment 20-27 cm long, 8-10.5 cm wide, 2.3-2.8 times longer than wide, acuminate at apex (rarely acute), broadest at or above middle, narrowly attached at base, 3-3.5 cm wide at point of attachment, moderately inequilateral, the inner side narrower, the margin ± straight to weakly convex toward base, occasionally weakly attenuate; outer side to 1.9 times wider than inner side midway, the margin weakly convex toward base; outermost segment 15-18.5 cm long, 5-7 cm wide, 2.6-3 times longer than wide, acuminate at apex, broadest midway, narrow ly to broadly attached at base, 2-3.5 cm wide at point of attachment, moderately inequilateral, the inner side narrower, the margin ± straight toward base; outer side 1.3-1.5 times wider than inner side midway, weakly to broadly rounded toward base or forming an auricle 5.5 cm long, 2 cm wide; midrib and major venation round-raised on lower surface, drying much darker than both surfaces, almost black, ± flattened on lower surface; posterior rib naked 2-3.5 cm per side; primary lateral veins (on medial lobe) 5-6 pairs, arising at 25-40°, ± straight; primary lateral veins (on lateral lobes) 4-5 pairs, arising at 25-35°, weakly arcuate; secondary veins drying in part raised, otherwise prominulous or occasionally flattened on lower surface, moderately darker than surface; tertiary and reticulate veins drying in part prominulous, otherwise visibly distinct on lower surface, usually moderately darker than surface; reticulate veins obscure; collective veins 3, the innermost arising from the lowermost lateral vein at base, loop-connected with all preceding lateral veins, moderately scalloped, 0.4-1.2 cm from margin. INFLORESCENCES erect, to 3 per axil; peduncle held within the sheath, 20-43 cm long, ca. 2 mm diam., drying weakly glossy, dark blackish brown; spathe pale green, erect, 9-12 cm long, weakly or not at all constricted between tube and blade; spathe tube 4.3-5 cm long, 5-6 mm diam., drying matte, dark brown on outer surface, weakly glossy, paler and densely tan punctiform on inner surface (speckles regularly rounded, appearing as subepidermal cellular inclusions); spathe blade 5.5-7 cm long, 7-8 mm diam., acuminate at apex, drying matte, dark reddish brown (paler than tube), marcescent, erect after anthesis; spadix erect, 8.5-9.5 cm long, weakly stipitate 1-2 mm (stipe emerging from a small sheath in the spathe), adnate to spathe 2.7-3.6 cm, most of the length of pistillate portion; pistillate portion 2.9-3.7 cm long, ca. 4 mm diam., broadest midway, drying brownish; fertile staminate portion white, 5-6 cm long, ca. 3-6 mm diam., bluntly acute at apex, narrowed at base, tapering, drying medium-dark brown to reddish brown; sterile staminate portion 1.4-1.6 cm long, 1.5-2.2 mm diam., narrowest midway, drying dark tan; pistils weakly coherent, ca. 4-5 across the axis (viewed from above), ca. 1.2 mm long; ovaries subglobose, 1.5-2 mm diam., drying cream to tan; style disc-like, 1-2 mm diam., weakly broader than ovary apex, the margins not coherent with those of adjacent styles; stigma 0.3-0.5 mm diam., sessile; synandria ca. 1-1.5 mm long, 1-2 mm diam., coherent, truncate, deeply (2)3-4-lobed, (2)3-4-androus (either mostly 3- or mostly 4-androus on different specimens); sterile flowers ca. 1 mm long, 1.8-3 mm X 1 mm diam., ± elongated in direction of axis, coherent, truncate, subprismatic, in 6-7 whorls. BERRIES not known.