238 BOTANY. 
too young, and in doubt placed here (126, 112), were much frequented by 
a large black insect an inch or more long. . Attached to these were some 
flies engaged in sucking the juices of the larger insect.* We found many 
of the flies still active and adhering to their defunct victims.—Southern 
Arizona (555, 556); Nevada. 
Evuroria Lanata, Mog.—Common throughout the West, where it goes 
among the herdsmen under the name cf White Sage and Winter-fat,—a 
really valuable forage eagerly eaten by stock. 
CorISsPERMUM HyssopiroLium, L.—Colorado (37, 866, 872). 
SPIROSTACHYS OCCIDENTALIS, Watson (Halostachys occidentalis, Watson 
in King’s Report, v, 293).—Nevada, Arizona, and Utah. 
PARONYCHIEE. 
PARONYCHIA PULVINATA, Gray.—South Park, Colorado, at 12-13,000 
feet elevation (46). 
ELAAGNEA. 
SHEPHERDIA CaNnaDEnsIs, Nutt.—Colorado (58, 59). 
ELZAGNUS ARGENTEA, Pursh—Colorado (60). 
URTICE. 
Crextis RETICULATA, Torr. (Ann. N. Y. Lyc. 2, 247, and Nutt. Sylva, 
1, 133, t. 39)—-Leaves somewhat acute, obliquely cordate-ovate, and the 
nearly entire margins somewhat revolute ; veins strongly reticulated on the 
lower surface and deeply impressed on the upper, papillose-scabrous above, 
less rough below; fruiting pedicels longer than the petioles; the pisiform 
berry glaucous, with a somewhat reticulate-rugose nucleus.—Nevada. Not 
having seen a specimen, I have drawn this description largely from 
Planchon, in DC. Prod. 17, p. 178. 
Number 367, from Camp Grant, Arizona, Mr. Watson regards as a new 
species, for which he has indicated the name of C. curtipes. I do not feel 
like attempting a description from the material at hand. It is a tree 20 
feet high, with a diameter of 18 inches, and has a smoothish, white bark. 
Urrtica Gracitis, Ait., San Luis Valley, Colorado (71), and U. eracriis, 
*Since this observation was made in 1874 the relations existing between insects and flowering 
plants have come to be more generally acknowledged, because more fully understood. I now suspect 
that the case given above has a deeper history than appears on the surface. 
