1890.] Botany. 779 
win diameter, bearing the conidia occogenously. Conidia ellipsoid to 
elliptico-spheroid, 4— 5 = 2— 2% p. Spicules with cell-walls some- : 
what thickened, often septate prolonged, sometimes roo » beyond the 
surface of the globose capitulum, 
Hab. On putrid orange-skin among bacteria, Minneapolis, Minn. 
It should be noted in passing that the specimens of ActHinoceps besseyi 
observed by us were sometimes grown over by a cobwebby network of 
Diplosporium filaments, which bore occasional spores, but were col- 
lected more abundantly on the wet paper in the bottom of the moist 
chamber, where they formed a luxuriant growth. The Diplosporium 
was referred doubtfully to D. album Bon., from which it differs slightly 
in the spore measurements. 
The Actinoceps above described is dedicated to Dr. Charles E. 
Bessey, the well-known botanist—Conway MacMILLan, University 
of Minnesota. 
Notes on the Canyon Flora of Northwest Nebraska.—Our 
party left Lincoln June 17th, and arrived at the Pine Ridge Tunnel 
early on the morning of the 18th. In the walk from there to Craw- 
ford about the only thing of interest found wasa very large form of 
Viola canadense L. with a very small flower. In many places this was 
almost entirely killed by „Zeidium viole. In many cases the plant 
leaves and stems were twisted all out of shape by the fungus. 
From Crawford to Harrison brought nothing of interest. Leaving 
Harrison we pitched our tent in War Bonnet Cafion. Here new things 
and new variations were continually turning up. One peculiarity of 
the cafion flora quite noticeable was the differertce—in many cases very 
pronounced—between the floras of the different side cafions. Many 
plants were found in one cafion and in that one only, though there 
were many cafions very similar to it. In one cañon Pyrola chlorantha 
Schwarz was found in a considerable quantity, but in one only. In 
another Pyrola secunda L. grew. Some cafions have any quantity of 
Populus tremuloides Michx., others scarcely any. 
In nearly all of the cafions, especially the damper, darker ones, 
Corallorhiza multiflora Nutt. grew quite plentifully ; while only the 
darkest cations afforded the rare C. innata R. Br. In a small cafíon 
at the head of Jim creek was found a lavender-yellow variety of the 
former species. Habenaria bracteata R. Br. grew in abundance alohg 
the low banks of all the cafion streams. The dry cliffs and slopes of 
the cafions were covered with the lovely Calochortus nuttallii Torr. and 
Gray. Fritillaria atropurpurea Nutt. occurred plentifully in a few 
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