602 standley: a remarkable new geranium 



odea A. Gray, a group confined, so far as known heretofore, to the 

 Hawaiian Islands. Not only in habit but in the form of the leaf blades 

 does Geranium jahnii bear a strong resemblance to members of this 

 group. Most of the species of the section have densely silvery-pubescent 

 leaves, but in G. cuneatiim menziesii A. Gray the leaves are glabrous 

 and in general form much like those of the species here described, 

 except that the blades are relatively broader and larger. Most of the 

 species of the Neurophjdlodea have a more ample inflorescence than 

 the Venezuelan jjlant, but not infrequent^ one-flowered peduncles 

 are found. 



Knuth remarks^ that this section is perhaps related to the group 

 Andina, and the recent discovery of this new species tends to confirm 

 that view. Geranium jahnii, however, is unlike the Andina in habit, 

 and none of the species of that section have similar leaves. The most 

 striking peculiarity of G. jahnii is the apparent articulation of the 

 petiole with the leaf blade, a character not possessed by any other 

 species, so far as the writer can learn, although in some of the densely 

 cespitose species the leaf blade often does break from the petiole, which 

 then persists upon the caudex. 



« Op. cit., p. 216. 



