BOTANICAL GAZETTE. 127 
gradual transition to L. pinnata, as the Red river valley is 
approached. A number of species of Artemisia were noticed; 
among others A. tridentata, Nutt. (sage-brush), but not extend- 
Ing eastward much beyond Pyramid Park. Senecio lugens, 
Rich., var. Hookeri, Eaton, was common everywhere. Species 
of Hieracium peculiar to the far west were found; also Grin- 
delia squarrosa, Dunal., which extends east into the edge of 
Minnesota. Troximon cuspidatum, Pursh, common in Minnesota, 
was replaced by 7. glaucum, Nutt.; and Iva wanthiifolia, Nutt., 
by I. awillaris, Pursh. Two species of Gaillardia, @. aristata, 
Pursh, and an undetermined one, were collected. Antennaria 
was represented by A. dioica, Gertn., a rather pretty little plant. 
Aphyllon fascicutatum, Gray, of the order Orobanchacee, was 
very common on the dry hill-sides, parasitic on the roots of 
various species of Artemisia. 
Numerous species of Pentstemon and Castilleia made up the 
bulk of the Serophulariacee. 
Only one of the order Labiatw was collected west of the 
Missouri; this was a species of Hedeoma. 
_ Three species of Echinospermum, one Mertensia, and three 
Species of Eritrichium, were noted as representing the Borragi- 
nacec, 
Phlox ccespitosa, Nutt., is first found in going westward near 
the Missouri river, but only on the summit of the highest and 
stoniest hills ; farther west it covers the ground nearly everywhere. 
Aselepias Cornuti, Decaisne, was supplanted by A. speciosa, 
Torr., a closely allied species, rather more handsome though not 
so tall and robust. 
Among the rarer Chenopodiacee, I collected Monolepis cheno- 
podioides, Moq., Eurotia lanata, Moq., Sarcobatus vermiculatus, 
orr. (this only in Pyramid Park), Salicornia herbacea, L., an 
three or four species of Obione. 
Among the Polygonacece, Rumex venosus, Pursh, and several 
“pecies of Eriogonum were of frequent occurence. 
Shepherdia argentea, Nutt., and S. Canadensis, Nutt., com- 
monly called “buffalo berries,” and Eleagnus argentea, Pursh, 
the silver-berry, abounded along the streams. 
A low trailing Juniperus was exceedingly common west of 
= Missouri, growing everywhere upon the sides of the dry 
rocky buttes, 
_ Allium reticulatum, Fraser, two species of Zygadenus, Smila- 
ema stellata, Desf., and Calochortus Gunnisuni, Watson, t is last 
pt extending east of Pyramid Park, aud Yucca angustifolia, 
Pursh, make up the list of Liliacee noted in western Dakota. 
