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1 Shrub or vine; leaves compound (or sometimes some to most of them simple in Clematis).
..2 Leaves opposite, distributed along the stem; sepals 4, white to blue or purplish, 10-50 mm long; wood not yellow; [subfamily Ranunculoideae, tribe Anemoneae]
..2 Leaves alternate, clustered together at the top of the usually unbranched, erect stem; sepals 5, maroon, 2-5 mm long; wood yellow; [subfamily Coptidoideae]