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Freely branched, perennial herb, 0.15-1.50 m high. Leaves alternate, tripinnate or quadripinnate; leaflets ± wedge-shaped, variously cleft; glaucous beneath. Inflorescences pseudo-paniculate, diffuse, much branched, many flowered. Flowers generally small, yellowish green to purplish. Stamens on hair-like filaments; anthers large, linear, yellow. Carpels 6-8, sessile, oval, strongly ribbed. Stigmas thickened, stigmatic papillae present. Flowering time Nov.-Jan. Fruit clustered achenes, asymmetric, flattened-fusiform, longitudinally striate, glabrous, with persistent stigma forming a beak.
Stems erect, nearly cespitose or rhizomatous, 15-150 cm, glabrous or somewhat glandular. Leaves basal, 7-30 cm. Leaf blade 3-4-ternate; leaflets nearly orbiculate or broadly ovate, irregularly 2-3-lobed or margins dentate in distal 1/2, 15-30 mm, surfaces glabrous to glandular. Inflorescences panicles with long branches, many flowered. Flowers: pedicels not recurved in fruit; sepals yellowish green, ovate, 3-4 mm; stamens 10-15; anthers yellowish, 2-3 mm. Achenes 3-15, sessile; body broadly ovoid to narrowly oblong-ovoid, 2.5-4 mm, ± weakly veined.
Herbaceous perennials, with annual, often hollow, erect, branching stems, glabrous or pubescent, 2-3 feet high, erect, leafy, ending in nearly naked spreading panicles of small, pale, purplish flowers. Leaves alternate, 3-4-pinnate; segments roundish or wedge shaped, variously cleft. Panicle diffuse, much branched, flowers small, purplish; stamens conspicuous, on hairlike filaments, with large, linear, yellow anthers, anthers mucronate; carpels 6-8, sessile, oval, strongly ribbed, tipped with the thickened style.
Perennial herb, up to 1.5 m high. Leaves with terminal leaflet cuneate at base, apex acute, veins on lower surface conspicuous. Flowers: in much-branched panicles; stamens conspicuous, anthers on hair-like filaments, linear, yellow; carpels 6-8, strongly ribbed; perianth purplish brown; Nov.-Jan. Fruit ovoid with a short beak.
An erect herb. It grows 0.9-1.5 m high and spreads 50-80 cm wide. The leaves are finely divided and have leaflets along the stalk. The flowers are yellow but sometimes with a purple tint. They are in panicles.
Herb, up to 2 m high. Terminal leaflet cuneate at base, apex acute, nerves on lower surface conspicuous, panicles much-branched. Carpels 6-8, strongly ribbed. Flowers yellow.
