RANUNCULACEAE. 1 53 



more than 4, petal-like; petals none or minute; stamens numer- 

 ous; pistils numerous, 1-ovuled; styles feathery or naked in fruit. 



Clematis ligusticifolia Nutt. Half-woody climber, the stem 2-10 m. long; 

 leaves pinnately compound, of 5-7 leaflets, or the lower pair ternate; leaflets 

 ovate or lanceolate, sometimes 3-lobed, coarsely incised-dentate or subentire, 

 3-6 cm. long, sparsely pubescent, becoming glabrous; flowers dioecious, in 

 large panicles, the staminate more showy; sepals white, oblong, densely hairy, 

 2 cm. long; akenes pubescent, the long tails plumose. 



Reported from the Willamette Valley, Oregon, but not verified ; common east 

 of the Cascade Mountains and in the Umpqua Valley, Oregon. 



191. ANEMONE. Anemone. Windflower. 



Erect perennial herbs; leaves compound or divided, all radical, 

 except 2 or 3 cauline which form an involucre usually remote 

 from the flower; peduncles 1 -flowered, solitary or in umbels; 

 sepals 4-20, petal-like; petals none; stamens numerous; pistils 

 numerous; akenes flattened, not ribbed; styles short, glabrous 

 or pubescent, never plumose. 



Akenes densely woolly; rootstock short and stout. 



Leaves hairy, the lobes linear. A. hudsoniana. 



Leaves glabrate, the lobes usually cuneate. A. drtimmondii. 



Akenes not woolly; rootstocks slender. 



Involucral leaves simple. A. deltoidea. 



Involucral leaves 3-5-foliolate. 



Flowers 8-12 mm. in diameter, white. A. lyallii. 



Flowers 20-35 mm. in diameter. 



Sepals white. A. piperi. 



Sepals blue. A . oregana. 



Anemone hudsoniana (DC.) Richards. More or less silky-villous; stems 

 20-40 cm. high, 1-3-flowcred; leaves ternate, cleft into linear divisions; sepals 

 yellowish or dull red, about 1 cm. long; head of akenes globose; styles about 

 half as long as the akenes. 



In the mountains, infrequent. 



Anemone drimimondii Wats. Glabrous or becoming so; stems 10-15 cm. 

 high; leaf-segments short, linear or narrowly cuneate; sepals bluish; styles 

 slender, nearly as long as the akene. 



In rock crevices in the mountains at high altitudes, rare. 



Anemone deltoidea Hook. Stems 15-30 cm. high from slender running 

 rootstocks; radical leaves trifoliolate, the leaflets ovate, dentate, acute; sepals 

 white, 1-2 cm. long; akenes ovate, glabrous or nearly so. 



In open woods from Pierce County, Washington, southward. 



Anemone lyallii Britt. Stems very slender, 5-10 cm. high; leaves 3-foli- 

 olate, the leaflets lanceolate to ovate, obtusely toothed; flowers white, small, 

 the sepals 4-6 mm. long. 



In moist mountain woods, rare. 



Anemone piperi Britt. Wood Anemone. Perennial from slender deep- 

 seated white rootstocks; stems erect, 1-flowered, 10-20 cm. tall, smooth or 

 pubescent; radical leaf and the three of the involucre similar, ternate or often 

 5-foliolatc, petiolate, the leaflets or divisions oblong-cuncatc or ovate, acute 

 or acuminate, inciscly toothed or lobed, 3-5 cm. long; sepals 4-7, oval, white; 

 akenes pulverulent, the style short. 



