116 PITTONIA. 
it, and in default of that, it remains as far as publication is 
concerned, little if at all better than a name only. 
S. Wanpr. Dwarf and compactly tufted, barely 3 inches 
high, herbage glabrous, slightly succulent: basal leaves 
erect, obovate-lanceolate, entire or crenate, } to $ inch long, 
on petioles twice as long: bracts or reduced leaves of the 
scapiform stems triangular-lanceolate, sessile by a very 
broad base, the margin more or less deeply crenate: heads 
small, numerous, short-pedicelled, forming a rather dense 
and nearly hemispherical cluster; reduced bractlets of the 
pedicels lanate on the margin (the only pubescence): in- 
volucral bracts 10 or 12, broadly and somewhat elliptically 
lanceolate: rays few and broad, 3 or 4-nerved. 
Collected somewhere in Utah, in the year 1875, by L. F. 
Ward; the specimen deposited in the U. 8. Herbarium and 
labelled “S. aureus, var. alpinus, Gray,” which means S. pe- 
treus, Klatt; but the plant is no near ally of that species. 
It may or may not be alpine. 
S.pETROCALLIS. S. petrophilus, Greene, Pitt. iii.171. This 
is a second attempt on my part to assign to the Rocky 
Mountain S. petrzus, Klatt, a tenable name. Even & pe- 
trophilus had been used by Klatt, apparently in the early 
nineties, for another species. 
S.MILLEFLORUS. Nearest S. atratus, similarly tufted, more 
than twice as large, the leafy and very copiously floriferous 
stems a yard high more or less: whole plant hoary with a 
loose but persistent tomentum : leaves of sterile basal shoots 
commonly a foot long including the short petiole, lanceolate 
and oblong-lanceolate, mucronately acute, rather remotely 
dentate, the teeth callous-pointed; cauline leaves half as 
large, lanceolate, sessile, more deeplv dentate: heads ex- 
cessively numerous in a very large compound and some- 
what fastigiate cyme; involucres narrow, cylindrieal, about 
