Low, nearly stemless: leaf-blade long-pinnate, about 1 m. long, bearing 18-20 opposite or subopposite pairs of glabrous much ribbed pinnae; petiole 30 cm. or more long, much ribbed or ridged, glabrous; pinnae falcate or sigmoid-lanceolate, 20-25 cm. long and 3-4 cm. broad, midrib pronounced on upper surface, 2 minor ribs either side and indistinct nerves between, a-pex slenderly acuminate to almost caudate, base narrowed to about one-half the usual width but ribs hardly curved, the pairs standing 3-4 cm. apart on the thin flattened rachis: staminate spadix ample and diffuse, the flowering part about 25 cm. long and broad, consisting of a continuing central glabrous rachis and perhaps 24 slender divaricate or drooping simple rachillae 10-15 cm. long and closely flowered; peduncle 50 cm. or more long, erect, slender, inclosed in about 5 strongly striate sheaths, the upper one of which has a short acutely bifid end; staminate flowers 1-2 mm. long in full bud, divaricate, abruptly short-pointed, calyx 3-lobed and spreading, petals valvate.
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