60 PITTONIA. 
CHRYSOTHAMNUS PINIFOLIUS. About a foot high, branched 
and woody below, the numerous erect and strict leafy and flori- : 
ferous branches 6 or 8 inches long, yellowish-green and glab- 
rous, only slightly resinous: leaves about 13 inches long, very 
narrowly linear, almost filiform, acute, usually suberect on the 
branches: heads forming a small thyrsoid panicle at summit of 
each branch ; inyolucres turbinate, their bracts in 3 series, all : 
glabrous, acute: corollas with clavate throat and short erect 
obtuse teeth ; style-branches short, hirtellous ; achenes slender, | 
nearly linear, rather densely appressed-silky. 
The type specimens of this ally of C. graveolens are of my — 
own collecting at Gunnison, Colo., 1 Sept., 1896. 
CHRYSOTHAMNUS CONSIMILIS. With much the aspect of the — 
preceding, the leafy and floriferous branches, inflorescence, and 
even the almost filiform foliage nearly the same, but the plant — : 
commonly 2 feet high ; heads longer, the involucre bracts thin- — 
ner and. scarcely carinate-conduplicate, the inner obtusish; : 
corollas rather deeply cleft and the segments not erect, rather — 
widely spreading ; style-branches merely barbellate-scabrous: — 
achenes as in the last as to size and form, also appressed -silky i 
but the silkiness shorter, 
Species-known only as collected by myself, in the desert valley 
of the lower Humboldt River, Nevada, at Deeth, 7 Aug., 1895. 
most clearly distinguished from C, pinifolius of Colorado — 
It is 
by the characters of the corolla and of the style-branches. 
CHRYSOTHAMNUS MOQUIANUS. Tufted stem and fastigiate ` 
almost leafless flexuous 
barely 3 inch long, linear, recurved-spreading : heads few and 
large, 5 to 7 in terminal clusters, all on stout, short pedicels; — 
bracts of involucre in 4 series, triangular to subulate-lanceolate, 
acute, recurved-spreading, softly and viscidly villous-ciliate: 
corollas with rather short spr 
hirtellous: achenes not seen. 
eading teeth; style-branches long, 
branches stout, rigid, yellow-green, & : 
foot high, glabrous, or else the woolliness saturated by resinous — 
exudation, becoming apparent only on old wood : the few leaves — 
es eee fit, ETD ea tp SH GS 
