Schismatoglottis longicaulis
Herb to c. 15 cm tall. Stem repent, branching, to c. 30 cm long, c. 1 cm diam., with internodes to 2 cm long, pleionanthic. Leaves c. 4 clustered at the end of the shoot; petiole to c. 6-14 cm long, sheathing in the lower c. 1/5??, faintly alate on the adaxial side between the sheath and the lamina; wings of sheath fully attached, persistent, broad and apically obtuse; blade more or less ovate, 6-11 cm long × 3-4.5 cm wide, the base obtuse to very slightly cordate with the posterior lobes c. 3 mm long and 1 cm wide, the apex acute to slightly acuminate, somewhat coriaceous, slightly glossy; midrib flush with the lamina adaxially, prominent abaxially, with 6-9 primary lateral veins on each side, alternating with interprimaries (these rather obscure in the fresh state), diverging at 60-80°; secondary venation arising mostly from the midrib, some from the lower parts of the lower primary veins; tertiary venation obscure. Inflorescence solitary; peduncle c. 4 cm long, upturned to bring the inflorescence erect on the repent stem. Spathe 3.5-6.5 cm long; lower spathe c. 1-2 cm long, green, very broadly ovoid, distally tapering sharply into the limb but not constricted; limb oblong-lanceolate 2.5-4 cm long, apiculate, whitish to yellowish, barely opening - gaping slightly at anthesis then clasping the spadix and persistent until falling with spent parts of spadix enclosed. Spadix sessile, 3-5.5 cm long, subcylindric; female zone obliquely inserted, 1-1.2 cm long, slightly conoid, c. 5 mm diam. at the top; pistils crowded, more or less cylindric, c. 0.5 mm diam.; stigma sessile, button-like, about as wide as the ovary, papillate; interpistillar staminodes absent from among the pistils, confined to one or two incomplete rings at the top and bottom of the female zone, stalked, clavate, more or less flat-topped, about the height and diameter of the pistils; interstice 0.5-1.5 cm long, cylindric, about the thickness of the female zone but slightly and abruptly attenuate at junction with fertile zones, almost completely naked but for few, scattered small groups of staminodes about half the size of the interpistillar staminodes, stalked near the base of the interstice, distally sessile and impressed; male zone 1-1.7 cm long, cylindric, 4 mm diam.; stamens crowded, truncate, dumbbell-shaped with the thecae somewhat elevated above and spread apart by the broad connective, c. 1 mm across; appendix slightly to distinctly shorter than the male zone, c. 0.5-1.4 cm long, basally isodiametric with male zone, tapering to an acute tip; staminodes of appendix flat-topped, irregularly polygonal, c. 0.7 mm across.
Malesia: endemic to Sumatera (North Sumatera, Lampung).
Reported from disturbed lowland rainforest along valley bottoms and from a dry stream bed; altitude not recorded except for Forbes’ specimen at c. 160 m.