Amorphophallus josefbogneri Hett.

Tuber narrowly elongate, branching, to 13 cm long, to 1.5 cm in diam., rhizomorphic, white. Petiole short, 8-9 cm long, 2-4 mill in diam. smooth, uniformly dull green to greyish-green; lamina to 19 cm in diam., few leaflets, rachises short, winged all over; leaflets elliptic to slightly elongate obovate, 5-10 cm long, 2- 5 cm in diam., slightly leathery, apex acute, upper surface dark rich green with narrow purple margin, lower surface greyish-green. Peduncle 16 cm long, 6 mm in diam. at the base, smooth, lower part very pale brown grading upwards to uniformly pale green. Spathe cymbiform, ovate, 8 cm long, 6 cm wide, base and limb not separated, short and loosely convolute, apex acute, margins slightly concave, outside base pale green, grading upwards to off-white, apex pale greyish-green, inside base pale green, grading upwards to whitish green, base within densely set with fleshy, irregularly elongate, verruculate warts. Spadix longer than spathe, 11 cm long; female zone cylindric, 1 cm long, 7 mm in diam., flowers distant; male zone subcylindric, slightly tapering to the apex, 3 cm long, 8 mm in diam., flowers congested; appendix narrowly elongate-conical, 7 cm long, 9 mm in diam., distinctly bent forward, base constricted, apex sub-acute, surface rugulose, off-white, emitting a strong scent of oligimethyl-oligosulphides at female anthesis. Ovary depressed, 2 mm in diam., 0.8-1 mm high, unilocular, pale green; style short, directed upwards at ca. 45 degrees, ca. 0.4 mm long, ca. 0.6 mm in diam., whitish green; stigma depressed, subtriangular to irregular in outline, weakly 2- 3-lobed, 1-l.2 mm in diam., ca. 0.4 mm high, verruculate, off-white. Male flowers consisting of (2-)3-4(-5) stamens; stamens very short, 0.6 m high, 2-3 mm in diam.; filaments almost absent, 0.1 mm, fused, off-white; anthers ca. 0.5 mm long, truncated, off-white, pores apical, slit-like.