WEST AMERICAN ASPERIFOLLE. 11 
in Eritrichium : and it is precisely these modifications of the 
fruiting calyx and its stalklet, whose value has been conceded 
in generifying Old World Asperifolim, which both British 
and American authors have ignored in their treatment of the 
West American Eritrichiew. The pedicels of Allocarya are 
from the first turbinate beneath the calyx, become indurated 
with age, and are persistent until the whole plant decays. In 
Krynitzkia, when duly restricted we shall have still a large 
genus in which the pedicels are filiform and so neatly articu- 
lated with the branchlet as to fall away promptly, on the ma- 
turing of the fruit, leaving a naked rachis. Allocarya is, in 
truth, much more nearly allied to Plagiobothrys than to 
Krynitzkia. Its nutlets are in general, not very different, 
being rugose, keeled more or less both dorsally and ventrally, 
and showing distinct lateral angles. In the first two species 
of the proposed new genus these angles are not se a 
owing to a singular misplacement of them, if one may say so 
for they are drawn forward, as it were, and folded one over 
the other, in front of, and thus entirely conceal the proper 
scar or point of insertion, as well as the lower part of the ven- 
tral keel. In the third species they come forward after the 
same fashion, but only far enough to form a narrow groove 
in which the sear and keel lie exposed. In most of the other 
species the lateral angles are, as in Plagiobothrys, where 
lateral angles ought to be. In Krynitzkia the scar is itself a 
groove; ho species have a keeled nutlet, and lateral angles 
are exceptional; for most of the so called Krynitzkias which 
have that appendage are probably to be excluded from the 
genus. In regard to the species of Allocarya, my long con- 
tinued field observations lead me to suspect them of hybrid- 
izing freely, in some localities ; or, as most botanical writers 
would say, they are confluent, or very hard to define. They 
are, however, less so than the Amsinckias, and their nutlets, 
if the scar and ventral keel be carefully considered, furnish 
fair characters. The genus Sonnea is taken out of Plagio- 
bothrys on account of the peculiar, softer than cartilaginous, 
earuneular scar. This is the same thing in the two groups 
