238 PITTONIA. 
peduneled somewhat drooping heads: leaves subcordate- 
deltoid, 2 inches long, serrate-toothed except at the slender 
and attenuate apical acumination, the petioles less than 
+ inch long: terminal cymose panicle rather naked, the 
heads solitary or in pairs on elongated slender peduncles 
and mostly drooping, fully $ inch long, the outer ovate 
bracts caudate-acuminate, the inner very numerous, thin, 
lance-linear, acute: achenes slender, subclavate, the ribs 
setulose-pubescent; pappus deciduous. 
Common in the middle Sierra Nevada, California; well 
represented in Bolander’s n. 5,030, from Clark’s Ranch. 
The true C. grandiflorus seems to occur in northern Califor- 
nia, and its type from still farther north differs greatly from 
C. gracilipes in having large often subhastate-ovate 3-nerved 
and doubly serrate leaves, together with far more numerous 
much smaller short-peduncled and erect heads. Its achenes 
are short, quite cylindrie, and much more setulose. 
/ COLEOSANTHUS POPULIFOLIUSs. Herbaceous and allied to 
C. grandiflorus, but the thin long-petioled leaves broadly 
deltoid, abruptly acuminate, exactly crenate though coarsely 
so, minutely glandular-dotted especially beneath, but glab- 
rous, the stem puberulent: heads in subumbellate clusters 
of 3 to 7 terminating leafy and subcorymbose branches: 
involucres subcampanulate, less than } inch high, the 
thinnish bracts oblong-ovate and oblong-lanceolate all 
acutish, 4-nerved, ciliolate: achenes cylindric, pubescent; 
pappus deciduous (as in all near allies of C. grandiflorus). 
Eagle Rock, Barry Co., Missouri, 21 Sept., 1896, B. F. 
Bush, the specimens distributed for C. grandiflorus, from 
which its deltoid and crenate foliage completely distin- 
guishes it. 
" COLEOSANTHUS UMBELLATUS. Akin to C. grandiflorus, 
