Bucephalandra motleyana Schott

Small herb 5-20 cm tall. Stem more or less condensed, creeping to suberect, 3-10 cm long, 0.4-0.8 cm diam. Leaves to c. 10 together; petiole (0.5-)1-8 cm long, 2-2.5 mm diam., adaxially canaliculate, reddish, sheathing at the extreme base, the wings extended into a very narrowly triangular ligular portion to 3 cm long, drying dark reddish brown; blade obovate to elliptic to very narrowly oblanceolate, rarely sublinear, (0.7-) 5-7(-10) cm long × (0.3-)2-2.8 cm wide, more or less coriaceous, glossy dark green adaxially, paler abaxially and sometimes tinged reddish, finely punctate on both surfaces, the base cuneate, the apex acute to rounded and apiculate for 1-2.5 mm, the margin somewhat revolute (very narrow forms) to somewhat undulate (broader leaved forms); midrib abaxially and adaxially prominent, reddish abaxially, with (1-)3-4 primary lateral veins on each side (absent in very narrow form), diverging at 25-60° and running to a marginal vein; secondary venation adaxially more or less obscure, abaxially fine and not dense (c. 1-1.5 mm apart); tertiary venation adaxially obscure, abaxially forming a faint tessellate reticulum. Inflorescence solitary, very rarely in a small synflorescence in robust specimens; peduncle exceeding the petioles, 2-13 cm long, reddish. Spathe broadly ovate, not constricted, (0.7-)2-3 cm long, the lower part funnel-shaped, green, persistent, the limb gaping, white, caducous, apiculate for 2-3 mm. Spadix (0.5-)1.2-2.5 cm long; female zone (0.1-)0.3-0.5 cm long, (0.15-)0.3-0.5 cm diam., 2-5 whorls of pistils; pistils ovoid to depressed globular, 0.6-1 mm diam.; stigma sessile, discoid, about half the diameter of the ovary, somewhat impressed centrally; interpistillar staminodes absent from among the pistils, absent or 1-a few at the base of the female zone, very small, c. 0.25 mm diam., subsessile; interstice consisting of 1-2 whorls of scale-like staminodes 1-2 mm long × 0.8-1.5 mm wide, at first erect then spreading; male zone 0.2-0.4 cm long, 0.1-0.3 cm diam., consisting of 2-5 irregular whorls of stamens; stamens large, to 1 mm across, truncate, with at first inflated then flatter thecae on the proximal (with respect to the spadix axis) side of the stamen; thecae with at first upward- then outward-pointing (with respect to the spadix) horns 0.2-0.3 mm long each with a minute pore at the tip; appendix globular to ellipsoid, 0.2-1 cm long, 0.2-0.5 cm diam., yellow; staminodes of appendix obpyramidal to subcylindric, truncate, sometimes partially connate especially in the distal part of the appendix, 0.5-1 mm diam., papillose on the upper surface. Fruiting spathe funnel-shaped, 0.5-1.2 cm diam.; berry depressed-globular to ellipsoid-oblong, 1-1.8 mm long, 1-1.5 mm diam., with numerous seeds; seed narrowly ellipsoid, 1-2 mm long, 0.25-0.3 mm diam., light brown, very slightly longitudinally ribbed to scabrid, with a curved micropylar appendage to 1 mm long.