Bucephalandra kishii S. Y. Wong & P. C. Boyce

Small obligate or facultative rheophytic herbs to 12 cm tall. Stem erect, mostly obscured by sheathing leaf bases c. 1 cm in diam. Leaves many together in a dense to rather loose rosette; petiole 1 - 3.5 cm long × c. 2 mm in diam., adaxially canaliculate, green or deep reddish black, or purple, sheathing at extreme base, wings extended into a very narrowly triangular ligular portion to 3 cm long; blade elliptic to ovate, 2.5 - 5 cm long × 1.5 - 2 cm wide, rather thickly coriaceous, semi-glossy medium green to very dark reddish black or purple-green adaxially, paler greenish red or green abaxially, base cuneate, apex rounded and apiculate for c. 1.5 mm, margin undulate to almost crispulate; midrib abaxially very prominent, adaxially prominent; primary lateral veins 3 or 4 on each side, very prominent adaxially, flush with blade or almost so abaxially, diverging at c. 45° and running to an adaxially strong marginal vein; interprimary veins much less defined adaxially, almost flush with blade abaxially; secondary venation abaxially forming a faint tessellate reticulum. Inflorescences several together alternating with a foliage leaf and/or a conspicuous prophyll; peduncle exceeding petioles, 5 - 9 cm long, conspicuously longitudinally ribbed, medium to dark green or red, or deep red-black. Spathe broadly ovate, becoming inflated turbinate just prior to anthesis, not constricted, 3.5 - 5 cm long, with acuminate part c. 1 cm long; lower spathe funnelform, pale yellow, pale pink, or red-flushed, persistent; limb inflating in middle with a slit appearing on distal acuminate and inflated portion, then caducous, white, or pale to medium pink, apiculate for c. 2 mm. Spadix 2 - 2.5 cm long; pistillate zone 7 - 9 mm long × c. 3 mm in diam., with 4 or 5 spirals of pistils; pistils compressed globose, c. 0.5 mm in diam., lime-green; stigma sessile, capitate, c. ½ diameter of ovary, papillate at anthesis; pistillodes 2 - 4 at base of pistillate zone, clavate with flat top, c. 0.5 mm in diam., white; interstice with c. 2 rows of scale-like staminodes, these c. 2 mm long × c. 2 mm wide, distally notched, at pistillate anthesis erect then at staminate anthesis reflexing, white; staminate zone weakly conic, 7 - 9 mm long × c. 6 mm in diam. at base and c. 4 mm in diam. at apex, consisting of 8 or 9 regular rows of flowers; staminate flowers waxy white; stamen comparatively large, c. 2.5 mm long × c. 1 mm across; filament triangular-rostrate, ascending; thecae inserted ventrally, narrowly ellipsoid, c. 1 mm long × c. 0.3 mm wide, smooth; thecae horns equalling associated theca, setaceous, upward curving; appendix bullet-shaped, shortly stipitate, abruptly and widely truncate at junction with staminate flowers, lowermost staminodes of appendix overhanging and partially obscuring uppermost stamens; appendix 1.7 - 2.3 cm long × c. 12 mm in diam., waxy white; appendix staminodes slender obpyramidal, tops somewhat to deeply excavate, 0.5 - 1 mm in diam. Fruiting spathe funnel-form, c. 1 cm in diam., with shield-shaped staminodes persistent, turning green, spent distal part of spadix falling; fruits and seeds not seen.