286 RANUXCULACEAE 



stamens erect; sepals thickish, more or less converging; staminodia wanting; 



6. VIORNA. 



Stamens spreading; sepals spreading from the base. 



Flowers mostly paniculate: sepals white or yellow, firm, without a border; 



staminodia wanting. 5. Clematis. 



Flowers solitary; sepals blue or purple, thin; staminodia usually present. 



7. Atragene. 

 Petals usually present. 



Sepals spurred; small annuals with basal linear leaves; receptacle in fruit elongate- 

 cylindrical; stamens 5. 8. Myosurus. 

 Sepals not spurred; plant usually bearing cauline as well as basal leaves; receptacle 



in fruit spherical, conical or short-cylindric; stamens more than 5. 

 Achenes transversely wrinkled; petals white. 9. Batrachium. 



Achenes not transversely wrinkled. 

 Achenes not ribbed. 



Petals yellow, at least without; sepals deciduous. 



Achenes without an empty upper portion; plants not scapose. 



10. Ranunculus. 



Achenes with the lower half enclosing the seed; the upper portion 

 empty, flattened and spongy; plants scapose. 



11. COPTIDIUM. 



Petals pink, rose-colored, or white; sepals marccscent-persistent. 



12. Beckwithia. 



Achenes longitudinally ribbed; petals yellow. 



Achenes compressed; leaves sim.ple, crenate or lobed. 



13. Halerpestes. 

 Achenes terete; leaves compound. 14. Cyrtorhyncha. 



Carpels with several ovules; fruit of follicles or berries. 

 Hypanthium not developed; petals wholly superior. 

 Flowers regular. 



Petals inconspicuous or none, not spurred. 

 Fruit of follicles; flowers solitary. 



Follicles sessile: leaves simple or cleft. 



Petals wanting; leaf-blades entire or merely toothed. 



15. Caltha. 



Petals present, but small, linear; leaf-blades palmately parted and 

 toothed. 16. Trollius. 



FolUcles stipitate; petals clawed; leaves compound or dissected. 

 Petals hooded and nectariferous at the summit; leaves ternate. 



17. CoPTis. 

 Petals filiform or linear beyond the nectariferous pit; leaves pin- 

 nately dissected. 18. Chuysocoptis. 



Fruit a berry; leaves twice or thrice temately compoimd. 



19. ACTAEA. 



Petals conspicuous, produced into a spur or at least saccate at the base; leaves 

 temately compound. 20. Aquilegia. 



Flowers irregular. 



Posterior sepal spurred. 21. Delphinum. 



Posterior sepal hooded, helmet-shaped or boat-shaped. 22. Aconitum. 

 Hj-panthium somewhat developed, lined at the mouth by a fleshy perigynous disk. 



23. Paeonia. 



1. ANEMONE (Tourn.) L. Wind-flower, Anemone. 



Perenmal herbs, usually with horizontal rootstocks and erect scapes. Leaves 

 basal, petioled, palmately divided or dissected. Bracts verticillate, usually 3, 

 similar to the leaves, remote from the flower. Flowers terminal, solitary or 

 c^'mose. Sepals 4-20, mostly 5, petal-like. Petals wanting. Stamens numer- 

 ous. Pistils usually numerous. Achenes compressed, I-seeded. Stigmas in- 

 trorse, unilateral. 



Plants with tuberous roots; sepals 6-20. 1. A. tuberosa. 



Plants with a rootstock; sepals 5-6, rarely more. 

 Achenes densely villous. 



Style fihform, usually deciduous; heads of fruit spherical or nearly so; involucral 



leaves short-petioled or subsessile. 

 Leaves ternate; segments broadly cuneate or flabelliform, crenate or slightly 

 _ cleft. 2. A. parviflora. 



Leaves 2-4 times ternate; segments linear to oblong or oblanceolate. 

 Styles 1-3 mm. long; leaves 2-3 times ternate. 



Achenes merely strigose on the back, densely villous on the sides; styles 

 2-3 mm. long; leaf-blades glabrate; segments oblanceolate. 



*? .j\. t€t07l€7isis • 



Achenes viUous all over; style 1-2 mm. long. 



Leaflets thick, glabrate, strongly veined; segments oblanceolate. 



acutish. 4. A, lithophila. 



Leif-blades thin, usually long-hairy, not strongly veined; segments 

 linear to lanceolate, acute. 5. A, globosa. 



