Petiolar sheath extending to base of apical geniculum, lamina sparsely to ± entirely deeply pinnatipartite to nearly pinnatisect, occasionally with large rhombic perforations adjacent to mid-rib. R. tetrasperma most closely resembles R. nicolsonii but may be distinguished readily on petiole sheath and leaf lamina characters.
","source":"CATE Araceae","sourceTaxonKey":141422345},{"key":465042349,"taxonKey":5329745,"type":"distribution","language":"eng","description":"Peninsular Malaysia (Kelantan, Perak) and southern Thailand
","source":"CATE Araceae","sourceTaxonKey":141422345},{"key":465042350,"taxonKey":5329745,"type":"distribution","language":"eng","description":"Peninsular Thailand, Peninsular Malaysia (type).
","source":"CATE Araceae","sourceTaxonKey":141422345},{"key":465042351,"taxonKey":5329745,"type":"general","language":"eng","description":"Deciduous herb to 0.5 m tall. Subterranean stem a subglobose tuber, to 6 cm across × 4 cm high, brownish. Pseudostem to 20 cm long. Leaves 1–2; cataphylls green, chequered dark pink; petiole to 25 × 1–1.5 cm, white-green or carmine; leaf blade trifoliolate; leaflets elliptic or obovate, to 35 × 18 cm, margins entire, apex acuminate ending in a short arista, base convex; central leaflet with a petiolule to 4 cm long; lateral leaflets with a petiolule to 1.5 cm long, plain green, with impressed veins above, underside with raised veins. Inflorescence more or less held at foliage level; peduncle equalling or shorter than the petiole, pale green; spathe tube cylindrical, slightly constricted near the mouth, 2.5–6 × 1–2 cm, white-green with faint darker veins near the base, white at the base; spathe mouth margins hardly recurved, green; spathe limb lanceolate, horizontal, nearly the length of the tube and scarcely wider, outside and inside yellow-green with a white spot at throat level, tip long-acuminate; spadix appendix protruding from the tube, but shorter than the spathe, bent forward, conical, ending in a naked and subulate tail, 5–6 cm long × 4–6 mm across at base, smooth, dull olive-green, sessile with carmine or green, stiff and short bristles above the fertile part; fertile zone staminate or pistillate, 1.5–2.5 cm long; staminate flowers loosely arranged, 2–3-androus, anthers white and dark purple at top, on a short stalk; thecae dehiscent by an oval pore; pistillate flowers densely arranged; ovaries ovoid, truncate at the top dark green with white striations; stigma on a short style, penicillate, white. Infructescence on an erect peduncle, cylindrical, 8 × 3 cm; fruits ca 10 × ca 7 mm, prismatic, apically flattened, red-orange when ripe, up to 3 seeds per berry. Seeds globose, 3–4 mm diam.
","source":"CATE Araceae","sourceTaxonKey":141422345},{"key":465042352,"taxonKey":5329745,"type":"general","language":"eng","description":"Small to medium-sized, rather slender, semi-pachycaul, heterophyllous liane to 5 m; seedling stage a non-skototropic shingling juvenile shoot; pre-adult plants very rarely forming terrestrial colonies; LEAVES: adult shoot architecture comprised of elongated, weakly clinging, physiognomically monopodial, flexuous, moderately leafy, non-flowering stems and weakly adherent or, more commonly, free lateral flowering stems; stems smooth, without prophyll, cataphyll and petiolar sheath fibre, internodes to 14 x 1 cm, separated by prominent straight leaf scars; flagellate foraging stems not observed; clasping roots sparsely produced from nodes and internodes; feeding roots stout, produced singly or in pairs from most nodes of free shoots; leaves weakly spiral-distichous; cataphylls and prophylls membranous, soon drying and falling; petiole shallowly grooved, 10-34 x 0.2-0.4 cm, smooth, apical and basal genicula slightly prominent; petiolar sheath prominent, extending to base of apical geniculum, soon falling to leave a prominent, slightly corky scar; lamina sparsely to ± entirely deeply pinnatipartite to nearly pinnatisect, occasionally with large rhombic perforations adjacent to mid-rib, 12-42 x 9.5-38 cm, broadly ovate to ovate-lanceolate, thinly coriaceous, base truncate or very weakly cordate, apex acute to acuminate, individual pinnae up to 6 cm wide; mid-rib prominently raised abaxially, slightly sunken adaxially; primary venation pinnate, raised abaxially, slightly impressed adaxially; interprimaries diverging from primaries, much less prominent, slightly raised abaxially, very slightly impressed adaxially; secondary venation weakly reticulate, very slightly raised; tertiary venation barely visible; INFLORESCENCE few together, subtended by two prominent cataphylls, these soon falling; peduncle terete, 2-2.5 x 0.3-0.4 cm; spathe canoe-shaped, 3-3.5 x 0.8-1.5 cm, stiffly fleshy, apparently falling swiftly, white with adherent black cataphyll remnants; spadix cylindrical, sessile, inserted slightly decurrently on peduncle, 3-3.5 x 0.75 - 1 cm, white; stylar region well developed, mostly rhombohexagonal, c.c. 2 x 2 mm, truncate, margins deflexed; stigma elliptic, longitudinally orientated, c.c. 1 x 0.2 mm; anthers exserted at anthesis; INFRUCTESCENCE not observed.
","source":"CATE Araceae","sourceTaxonKey":141422345},{"key":465042353,"taxonKey":5329745,"type":"habitat","language":"eng","description":"Disturbed rather dry to moist or wet forest on sandstone and granite. 190–760 m asl.
","source":"CATE Araceae","sourceTaxonKey":141422345},{"key":465042354,"taxonKey":5329745,"type":"habitat","language":"eng","description":"Disturbed rather dry to moist or wet forest on sandstone and granite.
","source":"CATE Araceae","sourceTaxonKey":141422345},{"key":465042355,"taxonKey":5329745,"type":"use","language":"eng","description":"None recorded.
","source":"CATE Araceae","sourceTaxonKey":141422345}]}