Small to medium-sized herbs; base cuneiform to more or less discoid, 1-2 cm. wide, 1-3 cm. high. Leaves 3 times pinnate, 3-20 cm. long, all the pinnae ascend-ing at an angle of about 450; primary pinnae 0.5-5.0 cm. long, 2-15 cm. apart; secondary pinnae 1-7 mm. long, 2-5 mm. apart; tertiary pinnae repeatedly forked, the ultimate divisions to 1 mm. long and 0.3 mm. wide, spathulate, acute, mostly nerveless; petiole 0.5-8.0 cm. long, 1-2 mm. wide, flattened, membranaceously dilated at the base and with a more or less distinct, obtuse, membranaceous ligula 1.0-1.5 mm. long. Flowers few, solitary; pedicel 1-4 cm. long; young spathe clavate, acute, 1.0-1.25 mm. long, the older infundibuliform, 3-5 mm. long; tepals 9, lanceolate, acute, nearly 1 mm. long; stamens 9, 1.5-2.0 mm. long, the filaments lanceolate, about 1.5 mm. long, the anthers obtuse, nearly 1 mm. long; pollen ellipsoidal, 17 X 14 It, the lobes tapering toward one of the poles; ovary narrowly ellipsoid, acute, attenuate at the base, with 6 indistinct and 2 more distinct ribs marking the sutures, 3.5-4.0 mm. long, the styles 2, cylindrical, 3-edged at the base, the narrow wings passing into the midribs of the valves, papillate at-the apex only, about 1.5 mm. long. Fruit with 2 distinctly 5-ribbed valves.
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