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8 RANUNCULACEZ. CLEMATIS. 
+ + Flowers irregular: follicles 1-5: leaves lobed or dissected. 
12 Delphinium. Sepals 5, the upper one produced backwards into a spur: 
petals 4, the 2 upper ones produced backwards. 
13 Aconitum. Sepals 5, the upper one arched into a hood: petals 5, the 3 
lower ones minute or stamen-like. 
+ + + Flowers regular: carpels 1-5: leaves compound. 
14 [sopyrum. Sepals5, petaloid: petals 5, sometimes none: low herbs. 
15 Cimicifuga. Sepals 5, petaloid, caducous: petals 5 or none; tall herbs. 
* * Fruit a 1-celled berry. 
16 Actwa. Sepals 3-5, petaloid, caducous: petals 4-10, small, soon decidu- 
ous: leaves ternately compound. 
TriBE v. Sepals herbaceous, imbricated in the bud, persistent. 
Petals conspicuous. Carpels few, many-ovuled, becoming follicles. 
17 Peonia. Herbs or shrubs with alternate compound leaves and large 
fleshy roots. 
Tribe 1. Clematidex DC. Sepals valvate in the bud. Stamens 
numerous, with adnate anthers. Curpels numerous, 1-ovuled, becom- 
ing -indehiscent hatry-tailed achenes. Ovule suspended. Herbs or 
trailing woody plants with opposite leaves. 
1 CLEMATIS Tourn. Inst. 255. Linn. Gen. n. 696. 
Erect herbs or somewhat woody plants that climb by their 
petioles. Sepals 5, rarely more, colored, valvate or with the edges 
turned inwards in the bud. Petals shorter than the sepals or 
wanting. Stamens numerous with extrorse anthers. Style persis- 
tent, becoming plumous appendages of the compressed achenes. 
§ 1. FrammuLa DC. partly. Flowers comparatively small and 
usually cymous-paniculate, white or whitish, in ours diccious. 
Sepals petaloid, thin, widely spreading. Petals none. Anthers 
mostly short, blunt. 
-(. ligusticifolia Nutt. T. & G. Fl. i, 9. Somewhat pubescent: stems. 
2-30 feet long: leaves quinate to quinate-ternate: leaflets oblong, acute, 
mostly somewhat lanceolate-cuneate, incisely lobed and trifid, 2- 6 inches 
long: flowersin paniculate corymbs: sepals thin, silky, white, 4-6 lines 
long, equaling the stamens: achenes pubescent, tails 1-2 inches long 
Along streams, from N. Cal. to Brit. Columbia and the Rocky Mountains. 
C. brevifolia. C. ligusticifolia var. brevifolia Nutt. T. & G. Fl. 4, 9. 
Stems woody, climbing over brush-and cliffs, 3-18 feet long: leaves nearly 
smooth, mostly 5-foliate, somewhat coriaceous; leaflets broadly ovate to 
lanceolate-ovate, acute or acuminate, usually 3-lobed and coarsely toothed: 
sepals white, thin, 4-6 lines long, equaling the stamens: achenes densely 
pubescent: silky-white tails 1-2 inches long. Along streams, from the 
Blue Mountains in Oregon to Brit. Columbia. ; 
C. Suksdorfii Robinson in Gray’s Syn. Fl.i4. Leaves quinate, glab- 
rous; leaflets 1-14 inches long: sepals widely spreading or reflexed in 
anthesis, velvety-pubescent on the outside: heads of fruit small and few- 
carpelled, not over an inch in diameter at full maturity pagers the 
curling tails : pubescence of the young achenes woolly or felt-like, the hairs 
crinkly, not straight nor silky as in C. ligusticifolia: mature achenes with 
broadly ovate nearly orbicular body and filiform sparsely pubescent tails. 
Klickitat river Washington, coilected and first recognized as distinct by 
W. M. Suksdorf July 16th. 1881. . 
