WEST AMERICAN ASPERIFOLLE. 95 
lanceolate aperture, the fourth with about 6 aculez almost 
distinct, but each dilated and slightly inflated at base, those 
on the opposite margins closely approximate, leaving ex- 
posed only the line of sharp murieation which forms a dorsal 
ridge; the body of all the nutlets muricate ventrally, à. e., 
outside the disk or crown ; even the crown finely muricu- 
late below and among the aculeze. 
The oldest specimens of this in my possession were col- 
lected by myself at Peach Springs, northern Arizona, 2 July, 
1889. They consist of a few dead and dry summer stems 
divested of foliage, but bearing plenty of mature fruit. 
Better ones, showing foliage and flowers as well as perfectly 
formed nutlets, were distributed last year by Messrs. Baker, 
Earle & Tracy, from near Mancos, in south western Colorado. 
In these the herbage is subcinereous with a hirsute pubes- 
cence, the proper leaves linear or oblong.linear; those of 
the loose spikes oval, corollas pale-blue. 
L. DEsERTORUM. Habit of the last, the numerous branches 
equally floriferous from the base, but the inflorescence 
more crowded, the bracts much smaller, not surpassing the 
fruits: nutlets not strongly dissimilar, the long aculex 
dilated below, in one almost disconnected, in three quite 
connected at base and unitedly somewhat vaulted over the 
disk of the nutlet, scarcely or not at all inflated; both faces 
of all the four nutlets strongly muricate, a line of coarser 
murication forming a ridge up and down the disk or dorsal 
side. 
Deserts of central Nevada; described from specimens 
obtained by the writer, near Holborn, 16 July, 1896; and 
there is another in my herbarium, contributed by Mrs. 
Bingham, of California, who picked it up at a railway sta- 
tion, many years since, somewhere to the eastward of the 
State of Nevada, probably in Utah or the eastern part of 
J Wyoming. 
