292 RANUXCULACEAE 



^ 3. V. hirsutissima (Pursh) Heller. Stem simple, erect, 3-7 dm. high: 

 lower leaves petioled the earliest entire, the rest dissected, mostly thrice pinnate 

 sepals brownish purple, 3-4.5 cm. long; achenes obhquely ovate, denselj canes^ 

 cent their styles 5-6 cm. long. C. hirsutissima Pursh. C. Douqlasii Hook. 

 Hillsides and valleys: Wash.—Wyo.— Mont. Suhmont.—Mont. My-Je. 



4. V. Wyethii (Nutt.) Rydb. Perennial; stem simple, 2-4 dm. high, vil- 

 lous ; leaves twice pinnately divided, with usually broader divisions than iA the 

 preceding; sepals dark brownish purple, 2.5-3.5 cm. long, villous outside; achenes 



mLT V''' 'tT^'^'I^*' ^^""^ '^^t^ 3-5 cm. long. C. Wyethii Nutt. Hills: 

 Mont.— Wyo.— Ida. Suhmont.—Subalp. Ap-Jl. 



.i;.i^i;7'/?^®1'' (Kuntze) Rydb. Stems 3-6 dm. high; leaves twice pinnately 

 ?nV,,i f K ""• ^"""f ' o^^oH?'' ^™= segments 1-5 cm. long, acutish; calyx cam- 

 panulate, brown; sepals 2-2.5 cm. long, ovate, the upper half with wavy dilated 

 margins ; achenes about o mm. long, densely silky; styles 4-5 cm. long. Ckmatis 

 j^onglasu xar. Jonesn Kuntze. Clematis plattensis A. Nels. Hillsides and 

 gulches: Colo.— IS ev, Suhmont.—Mont. Je-Jl. 



f^. ^' ^Q ^^!f^^?^\ ^,^^^- ^}^^^ ^^^ ^^^V'^s prominently white-villous, the 

 former 3-5 dm high; leaves distinctly petioled, twice pinnately divided; seg- 



f^! ,^l ?w ''"^' ''^P'' villous campanulate, about 3 cm. long; sepals oblong, 

 the upper third spreading with dilated margins; achenes oblong about 6 mm! 



long tails about 4 cm. lung. Foot-hills and canons: N.M.— Wyo.— Utah. Suh- 

 morit. My— Je. 



7. ATRAGENE L. Bell Rue, Purple Virgin's Bower. 



Perennial cUmbing or creeping vines. Leaves opposite, compound. Flowers 

 arge and showy, sohtary m the axils or at the end of the branches. Sepals 

 vJ!L ^^^^^i'^^K "mostly membranous, blue or purple, spreading from the base. 

 ^^r^^A-Z- ".^^™^«d^^ «f all' spatulate, usually present. Stamens numerous, 

 spreadmg, filaments pubescent, the outer ones dilated; anthers short. Pistil^ 

 many. Fruit 1-seeded achenes, with persistent, long, plumose styles. 



Leaves merely ternate. 



Stainmod^a^uajly decidedly spatulate; leaflets variously toothed or cleft, not long- 

 Lobes or teeth of the leaves rounded or obtuse at the apex; sepals ovate. 

 Lobes or teeth of the leaves acute or acuminate; sepals lanceo^att' ^''''''^°^''- 



Stamiuodia 



2. A. grosseserrata. 



Leaves twice or thrice ternate; staminodia usually linear or lacking ^' ^' '^'''"'"^^''"''• 

 Secondary leaflets merely toothed or cleft lacKing. 



Secondary leaflets broadly ovate, with broadly ovate teeth. 4 A remns 

 Secondary leaflets lanceolate, with lanceolate or ov^te-lanceolate iobe'^ or teeth. 



Secondary leaflets divided to near the midrib. t ± fenuilola.'"'"' 



,rr..^' ^: <livfr siloba Rydb. A low vine; leaves glabrous or slightly hairy when 



u3^ oTff 'ir^.''*' °''^^' ''' r^,^'?^' ^l^t""*^' 1-3 cm. long, the lateral ones 

 ^fr iS --f eft', tiie terminal one 3-cleft; sepals red-purple, lanceolate, about 2.5 



Tuhm^nt' ^Au '''*''' """■ ^''^' ''*'''*^- Mountains : near Denver, Colo. 



1p.fllV.^A^f ?f ^^^"'f *^ ^l"^^- Trailing or climbing over bushes; leaves ternate; 

 leaflets broadly ovate oblique, somewhat cordate at the base, 3-4 cm. long 



^^H^I *f^^'; """^^ of ten somewhat lobed; sepals about 4 cm. long, 10-13 mm! 



l-tn.^^hu '''''^l'' K^'^'i^ ^^ "l^""- ^"S, a little exceeding the stamens; 



achenes small, sparmgly hirsute; stj'les about 3 cm. long, plumose throughout! 



Mountain meadows among bushes: Ida.-Mont.-Wi^h. SubmonL-^Mont. 



f^rnlt^^'i ''fl^'f^^'^''? ?">**• ,^athef ,.taU Vine, climbing over bushes; leaves 

 ternate, leaflets thm, 3-10 cm. long, obhquely cordate at the base; sepals purple 

 or blue, 3-5 cm. long, lanceolate, acuminate; achenes rather densely pubescent ; 

 styles plumose, 4-5 cm. long. A. occidentalis Rydb., not Hornem. Clematis 



