RANUNCULACKAE (BUTTERCUP FAMILY) 197 



9. Anemone stylosa A. Nels. Bot. Gaz. 42: 52. 1906. Low from a thickened 

 simple or blanched caudex, densely covered with the dead sheathing petioles: 

 basal leaves pale green, glabrous, biternate, segments 3-parted, again incised 

 into linearrlanceolate acute lobes; involucral leaves short-petioled, otherwise 

 quite similar: stems and petioles sparsely long-pilose, the hairs: spreading or 

 refracted: sepals oval or oblong, purplish-red or greenish-red: achenes pubes- 

 cent, with rather long straight glabrous persistent styles, hooked at the tip. 

 —Only as yet from type locality, Fish Lake, Utah. ' >:'.-.■ 



8. PULSATILLA Adans. Pasqxte Flowbb 



Characters nearly the same as for Anemone, except that the styles are always 

 persistent and become greatly elongated and plumose.-^AneTwone in part.' 



1. Pulsatilla hirsutissima (Pursh) Brit. Ann. N. Y. Acad. Sci. 6,: 1891. 

 Villous with long silky hairs: flower erect, developed before A.e lea ves^ which 

 are ternately divided, the lateral divisions 2-parted, the miadle one, stalked 

 and 3-parted, the segments deeply once or twice cleft into: narrowly linear 

 and acute lobes: sepals 5-7, purplish or whitish. Anemone patens NvttalUana,. 

 —From the mountains eastward to UUnois and Wisconsin; the state .flower 

 of South Dakota. 



9. CLEMATIS L. Vibqin's Bowee 



Perennial herbs, either climbing or upright, with, opposite leaves, enlarged 

 nodes, and usually showy flowers (large and sohtary or smaller and clustered). 

 Sepals 4 or rarely, more, valvate, petal-like, Petals none, sometimes the 

 outer stamens sterile, with the, filaments broadened and petaloid. Stamens 

 many. Pistils numerous, becoming achenes tailed V(fith feathery or hairy or 

 rarely naked styles. i 



Petals none; atamens with 'adnata anthers. 

 Stems erect; leaves pinnate or pinnatifid. 



Leaves pinnate; the leaflets all petiolulate 1. C. plattensia. 



.. Leaves twice or thrice pinnatifid. 



Fetiolules of leaves straight (not contorted), 



, . , Low and white^villous 2. C. eriophora. 



• "'11' Tallei- and spa'rsely villous . 3. C; Dduglasii. 



Petiolules of some of the "leaves contorted as if for climbing , 4. C. Scottii. 

 litems climbing; leaves terhate or piti;nEiteIy 5-foliolate , , •. . 5. C. ligusticif<4ia. 

 Pefftls none; some of the outer stamens 'petaloid and sterile; stems 

 ' ■climbing or somet-imes low. - ' ■ 



Leaves ternate, entire or merely toothed 6. C. occidenHalis. 



Leaves biternate, incisely toothed or lobed 7. C. pseudoalpina. 



■ i ■ '• ,,..,';■' ;. " '" ■ .' '-'|P ^ -'I'.'- '•<■ ffi' ■ 



1. Clematis pla,ttensis A. Nels. Bot. Gaz. 42: 52. 1906. Stems clustered 

 on the crown of a thick woody root,. 12-18 cm. high, terminated by the single 

 stout, peduncle oi nearly equal, ilength in fruit, sparsely shortiviUous: basal 

 leaves small, scale-like and entire; foliage proper of about 3 pairs of nearly 

 simple-pinnate shprt-petioled leaves;, pinnae 7-9, the lowestip&ir sometimes 

 ternate, all distinctly petiolulate (petiolule 3-10 mm. long) and oblong- 

 lanceolate, entire, and (in age) merely ciliate-villous: achenes long-tailed, 

 hairy-plumose: flowers not known, presumably, iffliidlh like those 'of C. Doitg- 

 lasii. — Eastern Wyoming, in the canon of the Platte. 



2. Clematis eriophora Rydb. Bull. Torr. Bot. Club 29: 154^ 1902. Promi- 

 nently white-villous: stems 2-4 dm. high, simple: leaves 5-10 cm. long, dis- 

 tinctly petioled, twice pinnately: divided; ultimate segments 'narrowly linear: 

 flowers nodding: calyx villous; campanulate, about 3 cm. long: sepals oblong, 

 obtuse, the upper third spreading, with a dilated margin: achenes sUky, their 

 tails long and plumose. — In mountain cafions; Colorado. 



3. Clematis Douglasii Hook. Fl. Bor. Am. 1 : 1. pi. 1. 1829. Stem siijaple 

 or branching, more or less villous, wgoUy.at the jomts: leaves pinnate to 2- 

 or 3-pinnatifid; the leaflets linear or .linear-lanceolate: sepals thifik,, deep pur- 

 ple within, paler externally, woolly at the apex, and spreading: achenes silky, 



