Chlorospatha bogneri Croat & L.P.Hannon

Terrestrial herb, to 1.2 m tall (all measurements made from dried material); stem caulescent, decumbent, to 34 cm long; sap milky; internodes 1.5-3 cm long, 3-9 mm diam., weakly glossy, dark green, occasionally violet-tinged, drying matte, dark brown to blackish brown; cataphylls deciduous, 6-16 cm long, ca. 1 cm wide, obtuse with acumen at the apex, dark green, drying matte, dark brown to blackish brown. LEAVES 2-7, erect-spreading; petiole (10-)20-38 cm long (averaging 26 cm), 3-7 mm diam. near the base, frequently minutely many-ribbed near the apex, rarely entirely minutely crispy-puberulent or in part only near the apex and otherwise minutely puberulent, matte, dark green, occasionally violet-tinged, drying matte, dark blackish brown, sheathed 8-22.5 cm, more than 3/4 of to almost its entire length (rarely slightly less than 3/4), free-ending at the apex, frequently prominently so, the margins inrolled; free portion 2-3.5 mm diam., terete, sharply V-sulcate; blades erect-spreading, sagittate or ovate-sagittate, subcordate to cordulate or nearly truncate at the base, 10-22 cm long, 5-13 cm wide (averaging 17 x 8.5 cm), (1.3-)1.7-2.1 times longer than wide, usually weakly broader across the anterior lobe than at the base (measured tip to tip across the posterior lobes), 1-1.4 times wider, occasionally with one or both margins weakly to moderately constricted in the area of petiole attachment, moderately thin, glabrous, moderately to prominently bicolorous; upper surface minutely rugose, matte, markedly dark green, drying matte, dark blackish brown, rarely weakly greenish; lower surface reticulate, matte, paler, drying weakly glossy, occasionally semiglossy, weakly to moderately paler; anterior lobe 9-16 cm long, 4.5-9.2 cm wide, 1.6-1.8 (-3.5) times longer than wide, (3.3-) 3.6-4 times longer than the posterior lobes, weakly to moderately acuminate at the apex, broadest at or below the middle, symmetrical to weakly inequilateral; posterior lobes 2.5-4.5 cm long, 2.5-3.8 cm wide, 1-1.2 times longer than wide, usually as wide as long, acute to bluntly acute at the apex, occasionally narrowly rounded, broadest at the base, markedly inequilateral, the inner side narrower, weakly obtuse to straight toward the base, briefly attenuate and decurrent onto the petiole; outer side (2.1-)3.2-4.4 times wider than the inner side midway, convex toward the base; all orders of venation narrowly sunken on the upper surface, prominently raised on the lower surface, minutely puberulent to rarely crispy-puberulent, darker than the surface, drying raised, concolorous to weakly paler than the surface; midrib round-raised, obtusely minutely many-ribbed on the lower surface; basal veins 1-2 pairs coalesced into a prominent posterior rib or loosely coalesced, with 4-5 branching off, 3 acroscopic, 1-2 basiscopic, the first free to the base, 3-4 fused into a short posterior rib 1-2 cm long; primary lateral veins 4-6 pairs, arising at 30-60°, most acutely toward the apex, weakly to moderately arcuate, occasionally straight, round-raised on the lower surface; collective veins 3 pairs, the innermost arising from one of the lowermost lateral veins on the inner side of the posterior lobe, loop-connected with all preceding lateral veins, irregular, 3-14 mm from the margin, frequently markedly remote from the margin (relative to blade size). INFLORESCENCES erect, 1-2 per axil; peduncle held within the sheath, 21-25 cm long, 2-3 mm diam., as long as or longer than the petiole, pale green, drying matte to weakly glossy, dark brown; spathe erect, ca. 8 cm long, cuspidate at the apex, weakly or not at all constricted above the tube; spathe tube pale green on the outer surface, ca. 4 cm long, ca. 6 mm diam., drying matte, medium-dark brown on the outer surface, weakly glossy, weakly paler on the inner surface, densely pale punctiform; spathe blade white, ca. 4 cm long, ca. 6 mm diam., opening broadly at anthesis (to 1.3 cm wide), drying matte, medium-dark brown on the outer surface, weakly glossy, weakly paler on the inner surface, weakly and densely pale-punctiform; spadix erect, ca. 6.8 cm long, weakly stipitate 1-1.5 mm diam., adnate to the spathe ca. 1.9 cm at the base, along the stipe and to slightly more than 1/2 of the length of the pistillate portion; pistillate portion green, 3.1 cm long, 3 mm diam., weakly wider than thick, broadest above the middle; fertile staminate portion bright orange, 2.6 cm long, 4 mm diam., bluntly acute at the apex, broadest just above the base, weakly tapering, dlying medium-dark orangish brown; sterile staminate portion color not known, ca. 1.1 cm long, 2.5-3.5 mm diam., broadest at the apex, drying medium orangish brown; pistils weakly coherent, ca. 3 across the axis (viewed from above), ca. 1.5 mm long; ovaries cylindrical, 0.8-1 mm long, 2-2.5 mm diam., drying medium-dark brown; style mantle-like, green, ca. 0.5 mm long, 1.5-2 mm diam., comprising ca. 1/3 (possibly less) of the length of the pistil, thin, granular, briefly attenuate medially, the margins free, weakly broader than the ovary apex, frequently weakly coherent with the margins of adjacent styles, drying pale to medium-dark tan; stigma 0.5-0.7 mm diam., weakly elevated on and weakly broader than the the narrowed portion of the style (upon drying); synandria bright orange, 1-1.2 mm long, 2-2.2 mm diam., coherent, truncate, 3-4 lobed, 3-4-androus, drying medium-dark orangish brown; synandrodia 0.5-0.7 mm long, 1-1.5 mm diam., weakly coherent, truncate, subprismatic, in 6 whorls. INFRUCTESCENCES medium green, ca. 5 cm long, ca. 7 mm diam., drying matte, medium-dark brown on the outer surface, moderately paler on the inner surface; berries 2-3.5 mm diam., drying tan.