| 1 | Cauline leaves petiolate; bracts stalked, leaf-like; sepals glabrous externally; achenes glabrous or thinly pilose |
| 1' | Cauline leaves sessile; bracts sessile, much reduced; sepals silky-pubescent externally; achenes densely lanuginose |
| 2 | Basal leaves with 3, petiolulate, much dissected segments; flowers large, 3-10 cm diam.; sepals 5-6, 10-35 mm wide |
| 2' | Basal leaves 3-lobed, or with 3 sessile, cuneate segments; flowers 2-5 cm diam.; sepals 12-18, 5-7 mm wide |
