CROWFOOT FAMILY 87 



Leaves jjalmately cleft. 4. Trautvetteria.. 



Sepals valvate In the bud ; leaves all opposite. 



Stamens erect; sepals thicMsh, 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 soUtary; sepals blue or purple, thin; staminodia usiially present. 



7. Atkagene. 

 Petals usually present. 



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

 cylindrical; stamens 5. 8. Mtosurus. 

 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. Batbachitjm. 

 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 piak, rose-colored, or white; sepals marcescent-persistent. 



12. Beckwithia. 

 Achenes longitudinally ribbed; petals yellow. 



Achenes compressed; leaves simple, crenate or lobed. 



13. Halerpestes. 

 Achenes terete; leaves compound. 14. Cyrtorhyncha. 



Carpels with several ovules; fruit of follicles or berries. 

 Hypanthiimi not developed; petals wholly superior. 

 Flowers re^lar. 



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. Tbollius. 



FolUcles stipitate; petals clawed; leaves compound or dissected. 

 Petals hooded and nectariferous at the summit; leaves ternate. 



17. COPTIS. 

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

 nately dissected. 18. Oheysocoptis. 



Fruit a berry; leaves twice or thrice ternately compoimd. 



19. ACTAEA. 

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

 ternately compound. 20. Aqtjilegia. 



Flowers irregular. 

 ■ Posterior sepal spurred. 21. Delphinum. 



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

 Hypanthium somewhat developed, lined at the mouth by a fleshy perigynous disk. 



23. Pabonia. 



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



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



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

 Achenes densely villous. 



Style filiform, usually deciduous; heads of fruit spherical or nearly so; Involucral 

 leaves short-petioled or subsessile. 

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



cleft. 2. A. parviftora. 



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. 



3. A. tetonensis. 

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



Leaflets thick, glabrate, strongly veined; segments oblanceolate, 



acutish. 4. A. Uthophila. 



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

 linear to lanceolate acute. 5. A. globosa. 



Styles 4-6 mm. long; leaves 3-4 times ternate; segments narrowly linear. 



6. A. Drummondii. 

 Styles subulate, persistent; heads of fruit from rounded oblong to cyUndric; 

 involucral leaves Jong-petioled. 

 Heads elongate, cyllndric; styles about 1 mm. long; flowers usually subumbel- 



late. 7. A. cylindrica. 



Heads of fruit roimded-oblong; styles about 2 mm. long; flowers truly cymose. 

 Petals greenish white, 1 cm. long or less ; styles in fruit divergent. 



8. A. virginiana. 

 Petals white, 1.5 cm. long; styles suberect. 9. A. riparia. 



