110 - PITTONIA. 
specimens very usually fall far short of showing the full 
characteristics of the vegetative organs, I have deferred 
from year to year any attempt to segregate the forms; wish- | 
ing first to use all possible diligence in the field-study of 
them; and their territory is vast. I have, by using the op- 
portunities afforded by several more seasons of extensive 
travel now satisfied myself of the perfect distinctness of 
those which follow. Nuttall's type is easily distinguished 
from all the rest by its broad and very obtuse or even retuse 
radical leaves, its small stature, and simple stem. Its rather 
elongated and straight nutlets are beset on the back by short 
and distinct transverse bars, with many intervening tuber- 
culations. Hooker’s figure of Myosotis glomerata does not 
represent Nuttall’s type, but another species, while his de- 
scription is evidently drawn from an aggregate of several. 
OREOCARYA AFFINIS. Biennial, about a foot high, with — 
the main stem erect, stout, well surpassing the several 
more slender ascending ones arising from around its base: 
radical leaves obovate-lanceolate, obtuse, canescent with 4 
subtomentose indument intermixed with long and appressed 
bristly hairs having a conspicuously pustulate base, the 
lower cauline twice or thrice larger, green, and, with the 
stems and inflorescence, hispid: the short axillary forked 
racemes an inch long or more, forming a subcylindri¢ 
thyrsus for two-thirds the length of the stem: corolla-tube 
about equalling the calyx: elongated and somewhat acu- 
minate nutlets covered on the back with low subconie. 
tubercles, or these occasionally somewhat confluent into 
transverse ridges, a more minute tuberculation or granula- 
tion apparent only near the margin. o 
Sandy hills near Red Buttes, Wyoming, 5 July, 1896. : 
The figure in Hooker's Flora (of Myosotis glomerata) seems 
to represent a narrower-leaved form of this, in all save the 
character of the nutlets, 
