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

Small obligate rheophytic herbs c. 17 cm tall. Stem erect, later decumbent and rooting with active portion sub-erect, c. 1.5 cm in diam. Leaves many together, erect-arching; petiole 6 - 9 cm long × c. 2 mm in diam., conspicuously longitudinally sulcate, brownish green, sheathing at extreme base, wings extended into a narrowly triangular ligular portion c. 4 cm long; blade oblong-elliptic to elliptic, 9 - 12 cm long × 2 - 3  cm wide, coriaceous, semi-glossy emerald-green adaxially, yellowish green abaxially, base cuneate, apex acute and apiculate for c. 5 mm, margin weakly undulate; midrib abaxially prominent, dull red, adaxially slightly raised; primary lateral veins c. 6 on each side diverging at c. 30° and running to a rather conspicuous marginal vein; interprimary veins alternating with primaries, weaker than primaries, reddish; secondary venation adaxially obscure, abaxially forming a faint reticulate pattern; tertiary venation obscure. Inflorescence solitary; peduncle exceeding petioles, 5 - 11 cm long × c. 2.5  mm in diam. (average), longitudinally sulcate, pale green suffused reddish brown with ridges darker red. Spathe oblong-ovate, not constricted, 4 - 4.5  cm long; lower spathe initially narrowly funnel-form, later (staminate anthesis) flaring, medium semi-glossy green, persistent; limb slightly inflating and gaping distally at pistillate anthesis, opening widely almost to persistent lower spathe during staminate anthesis, caducous during late or post- staminate anthesis, with margins recurving, and limb often retaining a slender connection to lower spathe, greenish ivory, acuminate for c. 6 mm and apiculate for c. 1.5 mm, apiculum medium green. Spadix c. 3.5 cm long; pistillate zone c. ½ width of remainder of spadix, sessile, 3.5 - 5 mm long × c. 3 mm in diam., with c. 3 rows of pistils; pistils very closely appressed, rhombic-cylindric, c. 0.5 mm in diam., pale green; stigma sessile, button-like, c. ½ diameter of ovary, papillate at anthesis; pistillodes few, interspersed between lowermost spiral of pistils at their junction with spathe, spathulate, c. 0.5 mm long, glossy white; interstice with c. 3 rows of scale-like staminodes, these c. 2 mm long × 1.8 mm wide, margin thickened, staminodes initially erect (pistillate anthesis), reflexing during staminate anthesis until sub-perpendicular with spadix axis, initially greenish white, later (post-anthesis) becoming green and persisting to cover developing fruit; staminate zone c. 1 cm long × c. 6 mm in diam., consisting of c. 7 rows of flowers; staminate flowers pale orange; stamen large, c. 1 mm tall × c. 2 mm wide, overall pale orange; filament short, conspicuous; connective tetrahedral, with one side facing outward and upward; thecae inserted ventrally into connective, and almost completely immersed in connective tissues, individually very narrowly ellipsoid, c. 1 mm long × c. 0.3 mm wide, bright orange; thecae horns very short, barely 0.2 mm long, nipple-like, upward directed during pistillate anthesis, later (by reflexing of stamen filament during staminate anthesis), downward-directed; appendix ± tapering cylindrical, 1.5 - 2 cm long × 6 - 8 mm in diam.; appendix staminodes trapezoidal-cylindric, densely arranged, truncate, smooth, lowermost ones largest, c. 2 mm in diam., uppermost ones c. 1/3 this size, with terminal ones irregular and c. 0.5 mm in diam. Fruiting spathes and infructescences not seen.