196 RANUNCULACEAE (BUTTERCUP FAMILY) 



Achenes pubescent only or glabrate. 

 Leaves of the involucre sessile. 



Achenes appressed-pubescent S. A. canadensis, 



Achenes wholly glabrous . • . , . » . ., 6. A. zephyra. 

 Leaves of the involucre petioled. 

 Stems from horizontal or ascending rootstocka . , , 7. A, quinquefolia. 



Stems from an erect caudex, i ,, 



Styles deciduous , .8. A, tetonensis, , 



Styles persistent 9. A, stylosa, ' 



, . ■ ' in 



1. Anemone parviflora Michx. Fl. Bor. Am. 1: 319. 1803. Sijaringly softly 

 hirsute: the stems low, 4-10 cm. high, the solitary peduncles, in fruit, often 

 longer: rootstock slender: root-leaves 3-parted, their broadly cuneate seg- 

 ments crenately lobed or toothed; involucral leaves nearly sessile, their seg- 

 ments more deeply lobed: sepals 5 or 6, oval, white: head of fruit globular. — 

 Mountains of Colorado, northward to the Arctic sea. 



2. Anemone Uthophila Rydb. Bull. Torr. Bot. Club 29: 152. 1902. Spar- 

 ingly pubescent with long sUky hairs: stems 1 or more from a short erect root- 

 stock: leaves ternate, the obovate-cuneate segments once or twice 3-cleft or 

 lobed, the lobes oblong: involucral leaves subsessile and similar: sepals silky, 

 ochroleuoous, tinged with blue, broadly obovate or oval: achenes densely vil- 

 lous. — Utah and Montana, probably Wyoming and Idaho. 



■3. Anemone globosa Nutt. ex Pritz. inLinnaea 15: 673. 1841. Silky 

 hairyj 1-3 dm. high: basal leaves long-petioled, 3-5-parted, the segments 

 cleft mto linear acute lobes; involucral leaves short-petioled: sepals 5-9; red, 

 rarely yellow, oval or oblong, silky or downy beneath. A. multifidd. — ^Fre- 

 quent in the central Rocky Mountains. 



4. Anemone cylindrica Gray, Ann. Lye. N. Y. 3: 221. 1^36. Tall and 

 clothed with silky hairs: flowers 2-6, on vfery long and upright naked pe- 

 duncles: leaves of the involucre long-petioled, twice or thrice as. many as the 

 flower stalks, S-divided, their divisions wedge-shaped, the lateral 2-parted, 

 the middle one 3-oleft, lobes cut and toothed at th^ apex: sepals greenish- 

 white: head of fruit cylindrical. — From Colorado to Bitter Root valley and 

 thence eastward across the continent. 



5. Anemone canadensis L. Syst. Ed. 12. 3: App. 231. 1768. Hairy, rather 

 low: involucres sessile; the primary ones 3-leaved, bearing a naked peduncle, 

 and soon a pair of branches or peduncles with a 2-leaved involucre at the 

 middle, which branch similarly in turn; their leaves broadly wedge-shaj)ed, 

 3-cleft, cut and toothed; radical leaves 5-7-parted or cleft: sepals 5, oboHrate, 

 white: carpels orbicular. A. dichotoma. — Conmion along streams; eastern 

 Colorado and Wyoming and eastward. 



6. Anemone zephyra A. Nels. Bot. Gaz. 42: 51. 1906. Green but sparsely 

 long-pilose: stems 1 or more from the thick erept caudex, 7-15 dm. high, 

 rather stout: basal leaves petioled, ternate, the broad petiolulate segments 

 mostly deeply 3-cleft, and these segments in turn deeply incised into linear- 

 oblong lobes; involucral leaves sess3e, with linear-oblong lobes: flowers large, 

 2-^ cm. broad, lemon-yellow or ochroleucous, usually solitary and rather long 

 pedunculate, sometimes umbellately 2-4-flowered: achenes large, glabrous, 

 obovate, tapering to a stipe-like base, tipped with the short hooked style.' 

 A. rmmssi/Zora.-^ubalpine or alpine in the central Rocky Mountains. 



7. Anemone quinquefolia L. Sp. PI. 541. 1753. Smooth or somewhat 

 villous: stem perteotly simple from a filiform rootstock, slender, leafless, ex- 

 cept for the involucre of 3 long-petioled trifoliolate leaves; their ile&,flets wed^er 

 shaped or oblong, toothed or cut, or the lateral ones 2-parted; a similar rad- 

 ical leaf in sterile plants sohtary from the ro6tstock: sepals 4-7, oval, white 

 or pinkish: achenes oblong, with a hooked beak. A. nemorosa. — Scarcely 

 witmn our range; northward and eastward. 



8. Anemone tetonensis Porter, Brit. N. Y. Acad. Sci. 6: 224. 1891. Much ■ 

 like A. globosa, but lower and more slender: leaf-segments somewhat broader, 

 obtusish, glabrate: flowers deep purple: achenes dorsally glabrate. — In the 

 high mountains of northwefst Wyoming and extending into Idaho and Mon- 

 tana. 



