24 PITTONIA. 
rd 
M. sPINULOSA. Perennial, the several stoutish erect vir- 
gately racemose stems two feet high: foliage green and 
stems purplish, but the whole minutely puberulent, the in- 
florescence somewhat glandular: radical leaves with oblong 
strongly spinose-dentate blade tapering to a rather slender 
petiole, the cauline linear-lanceolate, saliently serrate-dentate, 
the stout teeth spinulose-tipped: involucres rather small, 
turbinate, their rather narrow bracts in about 4 or 5 series, 
with subsquarrose green tips: rays 7 to 10, rather short and 
inconspicuous, apparently blue. 
Dry hillsides of eastern Oregon, W. C. Cusick, 1897 (n. 
1811). Somewhat allied to M. inornata of northeastern Cal- 
ifornia; but a very well marked species. 
M. MONTANA, Greene, Pitt. iii. 60, excl. syn. Dieteria 
pulverulenta, divaricata and viscosa. This name may now 
stand for the plant of the Californian Sierra which formed 
a part of the original but aggregate M. montana. It is a 
perennial, pale throughout with a cinereous pubescence, the 
involucral bracts being glandular. The leaves are all nota- 
bly and almost pinnately lobed or coarsely toothed, the radi- 
cal of narrowly oblanceolate outline, the cauline broadly 
spatulate-linear. The large heads are corymbose rather than 
racemose; the campanulate involucres well imbricated, the 
bracts with squarrose green tips. 
The species seems to be of only southerly distribution in 
the Sierra; M. Shastensis being its northern homologue. 
M. TEPHRODES. Aster canescens, var. tephrodes, Gray, Syn. 
Fl. 206. Suffrutescent, the leafy and flowering branches 
glabrous below, scabrous above; the long linear-lanceolate 
leaves scabrous beneath and scabrous-ciliolate and with 
scattered short spinescent teeth: heads few, large, hem- 
ispherical, the involucral bracts hoary-tomentulose and not 
at all viscid or glandular, their tips long and subulate- 
attenuate, spreading or scarcely recurved.. 
Mountains of New Mexico and Arizona, 
