RANUNCULACE^E. (CROWFOOT FAMILY.) 9 



broad subulate beaks. — R. repens, var. macranthus, Gray. In the Uinta Moun- 

 tains, and from Oregon to Nevada and Texas. The largest of the genus 

 sometimes reaching a height of 5 feet. 



20. R. Nuttallii, Gray. Smooth, 6 to 8 inches high : radical leaves bi-ter- 

 natehj divided, segments 3 to 5-parted, lobes oblong or linear, sometimes 2 to 

 3-cleft : petals spatulate, a little longer than the broader sepals which are also 

 yellow : akenes rather few, in a globose head, cylindrical-oblong, grooved, many- 

 nerved, tipped with a long, slender, incurved style. — Colorado and Wyoming, 

 along the eastern foothills. 



21. R. multifidllS, Pursh. Stems floating or immersed, with the divisions 

 of the leaves long and filiform ; or rooting in the mud and the leaves round- 

 reniform and more or less deeply lobed and toothed: petioles short, broadly 

 stipulate-d Hated at base : flowers large, the petals with conspicuous obovate scales : 

 akenes in a small globose head, beaked by a short straight style. — Colorado 

 and northward, and across the continent. 



+- •*- +- ••- Leaves pinnately divided. 



22. R. orthorhyncus, Hook. More or less villous, the stems often 

 slender, 1 or 2 feet high: divisions of the leaves variously lobed and cut, the 

 segments often narrow : sepals reflexed : petals bright yellow or purple-tinged 

 outside : akenes large, flattened, in a close globose head, with a slender straight 

 beak as long as the ovary. — In the Bitter Root Mountains, northward and 

 westward 



6. C ALT HA, L. Marsh Marigold. 



Sepals 5 to 12, deciduous. Pods each with several seeds, and when ripen- 

 ing spreading and flattened. — Glabrous perennial herbs, easily recognized by 

 their undivided leaves and showy petal-like sepals. 



1. C. leptosepala, DC. Leaves round- to oblong-ovate (longer than 

 broad), with a somewhat narrowed and quadrate base, usually very obscurely 

 crenate above and rather coarsely and often acutely serrate below : flowers 

 solitary, very rarely 2, the second flower subtended by a petioled leaf : sepals 

 white or often tinged with blue. — From New Mexico to Alaska. An excel- 

 lent pot-herb. 



7. TROLLIUS, L. Globe-flower. 



Sepals 5 to 15, petal-like. Pods sessile, many-seeded. — Smooth perennials, 

 with large solitary terminal flowers and palmately parted and cut leaves. 



1. T. laxus, Salisb. Flowers pale greenish-yellow or nearly white: 

 petals much shorter than the stamens. — Associated with the preceding, but 

 less common. 



Var. albiflorus, Gray. Stem 6 to 12 inches high, and flowers white. — 

 Near snow-banks. " The pure white and broader sepals, lower stature, and 

 alpine station, distinguish this from the ordinary form," Colorado, Parry. 



8. AQUILEGIA, L. Columbine. 



Sepals 5, regular, colored like the petals. Petals all alike, with a short 

 spreading lip. Pods erect, many-seeded. — Perennials, with the leaflets of the 

 2 to 3 ternately compound leaves lobed. Recognized by its large showy 

 flowers and prominent spurs. 



