Stems decumbent, erect, or ascending. Leaves usually pinnately lobed or compound; leaflet blade linear, lanceolate, elliptic, ovate, narrowly obovate, or oblong, margins entire or deeply lobed. Pedicels erect. Flowers: sepals (4 or) 5, ovate, obovate, lanceolate, linear-lanceolate, or lanceolate-ovate; petals (4 or) 5, usually longer than sepals; nectary glands at base of antisepalous stamens; stamens 8 or 10; ovary 4 or 5-lobed. Fruits nutlets, obovoid or subglobose, smooth, ridged, or tuberculate. x = 5.
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