80 AMERICAN MIDLAND NATURALIST 
together both in woodland and on prairie. Mr. Mackenzie did 
not assign any specific name to his plant as distributed, but in 
the Flora of Jackson County it appears under the name A. cam- 
pestris, but, with Mr. Rydberg’s description of that very different 
species altered as to height of stem and length and shape of leaves— 
and very much altered, too—so as to let this tall long-leaved 
plant into the book under that name. 
6. A. Nebrascensis. Affinis A. neglectae, sed folia dimidio 
minora, superne multo magis tomentosa, indumento tardius 
evanido vel interdum, ad margines praecipue, permanente. Pedun- 
culi plantae femineae 5-unciales; capitula 5 in summo pedunculo 
subsessilia; squamae basi fuscae, apice lacteae, obtusae, integrae. 
Species known only from near Hershey, in western Nebraska 
where they were collected by Mr. C. D. Mell, 5 May, 1903. The 
specimens are excellent, though of the fertile plant only. The 
habitat lies quite beyond the region of low alluvial prairie, and 
is really on the eastern slope or verge of the arid Rocky Mountain 
plains; and the plant shows the influence of its environment in 
a foliage that is of but half the size of that of eastern A. neglecta, 
all the herbage quite hoary with the fine close tomentum which 
is far from being deciduous altogether from the upper face of 
the foliage. The basal and herbaceous part of the involucral 
scales is very dark in comparison with the same in even the more 
properly midland and prairie phase of A. neglecta. The male 
plant though unknown, is probably no rarity; but the locality 
for the species is remote from all centers of botanical field work. 
7. A. CAMPESTRIS, Rydb. Bull. Torr. Club, xxiv. 304 (July, 
1907). Doctor Rydberg when publishing this fourteen years ago 
reported it as occurring only beyond the Mississippi, and there 
is before me now no specimen that brings the range of it to the 
hither side of that river. It is almost a thing of the elevated 
Rocky Mountain plains. In view of a fair sheet of six specimens 
in U. S. Herb., collected and distributed by the discoverer of the 
species there appears a troublesome discrepancy between these 
and the description; for that attributes to the species leaves which 
in age are glabrate above. This character holds good of two 
specimens out of the six, but of the four it is not true; for in their 
young and not half grown state they have not a trace of any 
pubescence of their own. When I say of their own I have reference 
to this, that all around their edges there is seen a narrow line 
