RANUNCULACEiE. (CROWFOOT FAMILY.) 9 



broad subulate beaks. — R. repens, var. macranfhus, 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, (Jray. Smooth, 6 to 8 inches high : radical leave.s bi-ter- 

 nateli/ dividul, scgiiioiits 3 to 5-parted, lobes ohlong or linear, stjmetimes 2 to 

 3-cleft : petals s/mtulatc, a little longer titan the broader sepals uhich are also 

 yeltoic : akenes rather few, in a globose head, cijlindrlcal-ohlon</, f/rooied, many- 

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

 along the eastern foothills. 



21. R. multifidus, Tursh. Stems floating or immersed, irith the divisions 

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

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

 st ipul at e-d Hated at base : flowers large, the petals with conspicuous oborate 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 : scjials reflexed : petals brigiit yellow or purple-tinged 

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

 l)eak as long as the ovary. — In the Bitter Hoot Muuntains, northward and 

 westward 



6. CALTHA, L. Maksh 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 th.an 

 broad), with a somewhat narrowed and quadrate baj^e, 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 Ala.ska. An excel- 

 lent pot-herb. 



7. T R O L L I U S, L. Gloue-flower. 



Sepals .5 to 15, petal-like. I'ods sessile, many-seeded. — Smooth perennial.'*, 

 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, dray. Stem 6 to 12 inches higli, and flowers white. — 

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

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



8. AQUILEGIA, L. Coi.rMniNi:. 



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

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

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



flowers and prominent spurs. 



