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Perennial herb with erect stems 1–4 m. tall, more or less branched.. Leaves rather large, up to 4 dm. or more in length (including petiole), tripinnate to quadripinnate; leaflets elliptic-oblong to broadly ovate and oblate, sometimes rather obscurely trilobed, with coarse teeth, apices rounded, usually apiculate, bases rounded to cordate.. Inflorescence lax, many flowered.. Sepals 1.5–4.0 mm. long, green to purplish.. Stamens 3–13; anther thecae 0.8–1.7 mm. long, prolongation of connective 0.05–0.4 mm. long.. Carpels 1–2; stigma 2–7 mm. long at anthesis.. Achenes on slender elongated pedicels which are 6–11 cm. long, asymmetric, tapering into a persistent style, at the base tapering to a stipe or nearly sessile.
Freely branched, perennial herb, 0.6-1.5 m high, sometimes semi-scandent. Leaves alternate, tripinnate or quadripinnate, up to 400 mm long, with sheathing bases, leaflets elliptic to oblate, with coarse, rounded teeth (resembling fern fronds). Inflorescences pseudo-paniculate, lax, many-flowered. Flowers bisexual or male, generally small. Tepals 3-10, green to purplish. Stamens 3-13, filaments strongly twined; anther thecae up to 1.7 mm long. Carpels 1-4. Stigmas linear, with stigmatic papillae. Flowering time Jan.? Fruit clustered achenes, asymmetric, flattened-fusiform, longitudinally striate, glabrous, with persistent stigma forming a beak; pedicels elongating, 60-110 mm long, hair-like (nesting for birds).
Perennial herb, up to 2.5 m high. Leaves terminal leaflet 3-lobed in upper part, base rounded, apex cuspidate. Flowers: in lax, many-flowered inflorescences; pedicels elongating up to 110 mm, hair-like; carpels usually 1, ribbed; perianth green to purplish; Jan., Feb. Fruit asymmetrical with a long beak.
Leaves up to 40 cm. or more in length (including petiole), tripinnate to quadripinnate; leaflets elliptic to broadly ovate or oblate, often somewhat trilobed or with coarse rounded teeth, apex usually apiculate, base rounded to cordate.
Perennial herb, up to 2.5 m high. Terminal leaflet 3-lobed in upper part, base rounded, apex cuspidate. Inflorescence lax. Carpels usually 1, ribbed. Flowers green to purplish.
Achenes up to 8 x 2 mm., asymmetric, flattened-fusiform, longitudinally striate, glabrous, tapering to the persistent stigma; pedicels elongating to 6–11 cm., hair-like.
A herb. It grows 4 m tall. The leaves are 40 cm long. There are divided 3 or 4 times. There are many flowers in a loose group.
Stamens 3–13; anther-thecae 0.8–1.7 mm. long, prolongation of connective 0.05–0.5 mm. long.
Stigma linear, 2–7 mm. long at anthesis, covered with stigmatic papillae.
Inflorescence lax, many-flowered, some flowers male only.
Perennial herb up to 4 m. tall, sometimes semi-scandent.
Sepals 1.5–3 mm. long, green to purplish.
Carpels 1–4.
