4, Muhlenbergia, Volume 8 



org-an here being straight, continuous without articulation or 

 bend, and in fruit wholly persistent and plumose; whereas in 

 Geum it is short, stiff, jointed and bent at or near the middle, 

 the upper portion eventually falling away." 



Piper (13), Rydberg (14), and Nelson (16) have accepted 

 Sieversia as a genus, and in their generic kc)s all use the main 

 characters of the style emphasized by Greene, as quoted above. 



Now let us see what may be shown by. my study of the 

 material at hand, beginning with E. ciliata and taking each 

 form in turn. 



E. ciliata: 79 specimens, 45 in fruit, of which 33 (73 and 

 a third per cent.) are decidedly hooked, bent, or articulated, 6 

 not distinctly so (summing 862-3 per cent, evidently so), 2 prob- 

 ably not so, 4 evidently not so, and 23 (50 per cent.) with pro- 

 nounced evidence of the deciduousness of the portion bevond the 

 joint or bend. 



E. nhata ornata: 3 specimens, none in fruit, hence can not 

 be judged as to the style. 



E. dissecta: 12 specimens, only 4 in fruit, i evidently joint- 

 ed, I evidently unjointed, and 2 difficult of classification, but i 

 of these with missiug tips. 



E flavula: 2 specimens, the types, both with fruit, i evi- 

 dently jointed, the other questionably so, both with terminal 

 portions deciduous. 



E. aiistralis: i specimen, the t\ pe, jointed and deciduous. 

 {S&& plate I.) 



E. brevifolia: 5 specimens, 4 with fruit, 3 evidently jointed, 

 I uncertain, the 4 deciduous. 



E. campaniilata: i specimen, the t}'pe, in flower (jnly. 



E. trifiora: 20 specimens, 16 in fruit, all unjointed and 

 wholly persistent, also in all of the next seven foruis. 



E. ajfinis: 2 specimens, type and co-t\pe, both in fruit. 



E. {Hartman yoo): i specimen, in fruit. 



E. arisonica: 7 specimens, 5 in fruit, including the type 

 and a co-type. • 



E. tride.ntata: 3 specimens, all Palmer jo6 (t)'pe and co- 

 types)^ 



E. cincrnsccns: 6 specimens, 3 in fruit. 



