Abstract

Stems creeping, rather stout, rooting at the nodes. Leaves chartaceous, elliptic, obtuse or rounded at the apex, rather coarsely crenate, pinnately 3-nerved, glabrous, those of each pair often unequal in size; larger leaves up to 5.5 cm. long, 3.4 cm. wide, with petioles 1.5-3 cm. long; smaller leaves 2.5-4 cm. long, I.5-2.6 cm. wide, the petioles I-2 cm. long; upper leafsurface densely covered with minute linear raphides, the lower surface papillose; pistillate inflorescence longer than the leaves, peduncled, its branches spreading; achenes ovate, about o.9 mm. long.

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