154 PITTONIA. 
theleaves as white with a dense strigose pubescence, their 
outline oblanceolate, all tapering to short slender petioles, 
heads solitary in the smaller plants, fastigiate-corymbose in 
the larger: involuere very regularly imbricated, broadly 
turbinate: rays rather light-yellow: achenes densely ap- 
pressed-silky : outer pappus obvious, indistinctly paleaceous- 
On dry rocky declivities leading to the mesas, at Arboles, 
southern Colorado, C. F. Baker, 5 June, 1899. Related to 
C. hispida, yet very distinct, as the strong ligneous under- 
growth and abundant white indument attest. 
" CHRYSOPSIS PEDUNCULATA. Stems numerous from a sub- 
ligneous branching caudex, short and depressed, forming 
large mats: oblanceolate leaves almost silvery-canescent 
with a fine appressed somewhat strigulose pubescence: 
heads rather large for the genus, solitary or several on long 
almost naked peduncles, these 2 inches long or more, often 
quite as long as the densely leafy stem itself: short outer 
bracts of the broad involucre subulate, the innermost ob- 
long-linear, all equally eanescent with the foliage, often 
purplish on the margin: rays showy, golden-yellow: achenes 
densely silky ; outer pappus eonspicuous, of unequal narrow 
and almost setiform pale. 
Dry hillsides about Pagosa Springs, southern Colorado, 
C. F. Baker, 20 July, 1899. A beautiful species, altogether 
unique among its allies by its short decumbent or assur- 
gent stems, and few long-peduncled heads. 
V GRINDELIA SUBINCISA. Stems apparently several and 
decumbent, a foot high or less, freely and rather loosely 
branched from toward the base, the branches slender, spar- 
ingly leafy, and mostly monocephalous: lowest leaves ob- 
lanceolate, or ligulate-oblanceolate, commonly 3 to 5 inches 
long, rather thin, glabrous or the upper surface obscurely 
scabrous, the margin variously but usually remotely incise- 
serrate or even subpinnatifid, those of the branches oblong- 
