6l4 CALIFORNIA ACADEMY OF SCIENCES. 



scarcely enlarged below; akenes usually obtuse at apex, 

 never acuminate; sparsely pubescent below, much pubes- 

 cent above; tail i' long; mature peduncles about 5' long; 

 leaflets thin, shortly acuminate. 



Clematis verticiUaris DC. has coarsely and sparsely 

 dentate, ovate, shortly acuminate leaflets, which are often 

 trifid; fruiting peduncles 2-3' long, reflexed; akenes 

 1—1 }4" long, obovate, with a broad and flat border, which 

 tapers abruptly into a flat wide tail, which gradually nar- 

 rows upward; akenes nearly equally hair}^ throughout, 

 and sparsely so, nearly twice the size of those of the var. 

 Colmnbiana. 



Clematis Douglasii var. Bigelovii (Torrey, Pac. R. R. 

 Rep., 4, 61). 



Clematis Bigelovii Torrey 1. c. 



I can find no characters which separate this from C. 

 Douglasii. Palmer's specimen from New Mexico has 

 the long peduncle and flower of C . Douglasii, has three 

 distinct pairs of leaflets besides the terminal one ; the 

 lower pairs are again 3-parted, and the divisions stalked 

 (lateral stalks 2" and terminal one 6" long), making the 

 leaf 2-ternate, the leaflets are again cut-toothed or parted 

 into acute segments, whose general outline is ovate to lan- 

 ceolate, 6-12" long; petioles of the main pairs of leaflets 

 i' long; leaflets nearly glabrous; petioles, etc., decidedly 

 pubescent; inner sepals woolly. 



Newberry's specimen from McComb's Expedition has 

 leaflets of Douglasii, but broader, the fruit is that of 

 Douglasii. 



Lemmon's specimen from Arizona has filiform seg- 

 ments, but in other respects is C. Douglasii. 



Shufeldt's specimen from Fort Wingate, New Mexico, 

 has oblong-ovate leaflets, 6" or less long, mostly entire, 

 shortly acute, and giving a wholly different appearance. 



