Glaucous capitate-pubescent perennials to as much as 1.3 m. high, the lignes-cent twigs shallowly canaliculate. Cauline leaves alternate, capitate-pubescent, the blades 3-to 4-times pinnately compound, the pinnae opposite, the ultimate divisions often ternate or 3-lobed, often asymmetrical, ovate to reniform in outline, apically rounded, basally truncate to cordate, 5-12 mm. long, 5-12 mm. broad, the petiolules 2-8 mm. long. Flowers few, the inflorescence less than 3.5 cm. long, ap-parently unisexual; sepals (3-)4, ovate, obtuse, 3-nerved, 2.0-2.5 mm. long, ca. 1 mm. broad, promptly caducous; carpels few, the body about 1 mm. long, the style ca. 2 mm. long. Achenes 3.5-4.5 mm. long, 2.0-2.3 mm. broad, glandular-puberu-lent, stipitate, 3-ribbed, the ribs rarely branching or anastomosing; fruiting pedicels to 15 mm. long.
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