156 Rydberg : Studies on the 



nodia, a very unfortunate distinction, for in most of the West 

 American forms both conditions exist. The filaments of the outer 

 stamens are flattened and more or less petaloid. In some cases 

 the outermost have no anthers (true staminodia), but often all are 

 antheriferous. The present species is therefore placed in both 

 species by Kuntze. Atragene occidcntalis differs, however, from the 

 eastern A. Americana in the fact that the staminodia as far as I 

 knovv always are linear, while they are in A. Americana decidedly 

 spatulate. A. occidcntalis is common from British Columbia and 

 the Canadian Rockies south to California and Colorado. 



Atragene grosseserrata 



Trailing or climbing over bushes : leaves ternate ; petioles 

 5-8 cm. long; petiolules 1-2 cm. long; blades broadly ovate, 

 oblique, somewhat cordate at the base, 3-4 cm. long, coarsely 

 toothed and often somewhat lobed : peduncles 5-10 cm. long: 

 sepals lanceolate, about 4 cm. long, 10-13 mm. wide, acute : stami- 

 nodia about 18 mm. long, decidedly spatulate, a little exceeding 

 the stamens : achenes small, sparingly hirsute : tails about 3 cm. 

 long, plumose throughout. 



This is closest related to the eastern A. Americana; but the leaves 

 are deeper serrate and the sepals are longer, lanceolate, and resem- 

 ble more those of A. teniiiloba. From A. occidcntalis it differs in 

 the spatulate staminodia, the shorter leaflets, which are coarsely 

 serrate except the very base. In A. occidcntalis the leaflets are en- 

 tire or merely crenate above the middle. 



Idaho : Palouse county and about Lake Coeur d'Alene, 1892, 

 G. B. Alton (type in Herb. N. Y. Bot. Garden, flower). 



Washington : Cascade Mountains, 1882, F. Tweedy (fruit). 



Atragene repens (Kuntze) 



Clematis alpiiia a occidcntalis 2 rcpcns Kuntze, Verh. Bot. 

 Ver. Brandenberg, 27, 161, in part. 1884. 



Plant trailing : leaves biternate, glabrous, firmer than in the 

 two preceding : petioles 5-8 cm. long : secondary leaflets sub- 

 sessile except the terminal, which is short-stalked, broadly ovate, 

 coarsely toothed with broadly ovate teeth, 3-4 cm. long, abruptly 

 short acuminate at the apex : peduncles over i dm. long : sepals 

 ovate-lanceolate, about 4 cm. long, acute : staminodia linear : 

 achenes about 5 mm. long, pubescent : tails about 4 cm. long, 

 plumose throughout. 



