Recent phylogenetic analyses of Anemone in the broad sense, however, indicate that both Pulsatilla and Hepatica should be subsumed within Anemone. americana (the last two taxa in this treatment) in the genus Hepatica Miller, primarily on the basis of the involucre immediately subtending the flower and the lobed, persistent leaves. multifida (the first two taxa in this treatment) are frequently placed in the genus Pulsatilla Miller on the basis of the long plumose achene beaks, and A. The taxonomy of Anemone continues to be problematic. 150 (25 in the flora): nearly worldwide, primarily in cooler temperate and arctic regions.
Fruits achenes, aggregate, sessile or stalked, ovoid to obovoid, sides not veined beak (persistent style) present, sometimes rudimentary, terminal, straight or curved, to 40(-50) mm, sometimes plumose. patens ), distinct, plane, obovate to elliptic, 1.5-2 mm nectary present stamens 10-200 filaments filiform or somewhat broadened at base staminodes absent between stamens and pistils pistils many, simple ovule 1 per pistil style present. Flowers bisexual, radially symmetric sepals not persistent in fruit, 4-20(-27), white, purple, blue, green, yellow, pink, or red, plane, linear to oblong or ovate to obovate, 3.5-40 mm petals usually absent (present in A. Inflorescences terminal, 2-9-flowered cymes or umbels, or flowers solitary, to 60 cm involucres present, often with primary involucres subtending inflorescences, and secondary and tertiary involucres subtending inflorescence branches or single flowers (primary, secondary, and tertiary involucres appearing to be in tiers), involucral bracts 2-7(-9), leaflike or sepaloid, distant from or close to flowers. Leaf blade lobed or parted or undivided, reniform to obtriangular or lanceolate, margins entire or variously toothed. Leaves basal, simple or compound, petiolate. Herbs, perennial, from rhizomes, caudices, or tubers. FordĪnemonastrum Holub Anemonidium (Spach) Holub Anemonoides Miller Hepatica Miller Jurtsevia A.
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