A DECADE or New GUTIERREZIAS. 
Representatives of the genus Gutierrezia are abundant on 
all elevated plains and arid mountain slopes from Texas to 
the Dakotas, and westward to the Pacific; but the critical 
study of them has never been taken up at all seriously since 
the time of Nuttall and the elder De Candolle. It is easy to 
say that twenty or thirty seeming species, gathered out of as 
many different and often widely separated climatic regions, 
are all but so many modifications of *Gutierrezia Euthamie,” 
much easier than it is to carefully work out their specific 
characters. But the more difficult alternative is the only 
one that gives promise of results satisfactory to the travelled 
and observant student. 
The following are some of the species which I am able to 
make out from material existing in my own herbarium, 
collected largely by myself during many years of field work 
in the West. 
G. DIVERSIFOLIA. Stems 4to 8 inches high, loosely rather 
than densely tufted on a short stout ligneous crown of the 
root, angled and scabrous but hardly glutinous: lowest 
leaves somewhat oblanceolate, the short blade tapering to a 
long winged and hispid-ciliolate petiole, this again gradually 
widening to the base; only the uppermost truly linear and 
these not narrowly so: inflorescence of large and rather 
broadly turbinate involucres formed into an open more or . 
less dichotomous and not flat-topped cyme: bracts of the — 
involucre in only about 3 series, with thick obtuse green . 
tips: rays 5 or 6, disk-flowers 8 or 10: pappus-palez in the 
disk-flowers 8 to 12, very narrow and acute, those of the disk 
fsi is nanak] in the genus) less than half as long. 
... Prrrowia, Vor. IV. Pages 53-72. M. July, 1899. 
