18 PITTONITA 
and glandular, simple to near the summit, then divaricately 
branched, each branch ending in a pair of short almost divari- 
cate circinate spikes: leaves thin and dilicate, pinnate below the 
middle, above it the pinne confluent, all coarsely and somewhat 
incisely toothed: calyx subsessile, its segments broadly (almost 
obovately) oblanceolate, tapering below to a narrow linear base, 
densely villous-hirsute mostly marginally, also glandular, faintly 
1-nerved: corolla pale purplish; stamens long-exserted: cap- 
sule very small, oval, villous; seeds 2, or often 1 only. 
The type of this excellent species is my n. 896, collected near 
Yreka, California, 28 June, 1876, and distributed for P. ramo- 
sissima. It ranges southward in Calif. to Lake Co., where it has 
been collected by Jepson. 
P. BIFURCA. Forani like the last two, but stoutish and 
rigidly erect, paniculately branched at summit or above the 
middle; herbage grayish with a close indument of minute sharp 
hairs from a pustulate base, the stem and branches more sparsely 
clothed with straight spreading hairs, the smaller of them gland- 
tipped: leaves narrow and pinnate or pinnatifid, the pinnules 
oval and incised, the rachis hispidulous; peduncles rigidly as- 
cending, divergently forked, each fork with a pair of divergent 
spikes: sepals with ovate-elliptic blade longer than the slender 
basal portion, this very hispid, but the blade not so except mar- 
ginally, its surface above the middle merely scabrous; corolla 
short, but the limb widely spreading ; anthers exserted: capsule 
ovoid, villous-strigose; seeds 4, long-oval. 
Mountains near Tehachapi, Kin Co., California, 22 June, 
1889; collected by the writer only. 
P. FasTIGIATA. Perennial, allied to the last, evidently larger, 
probably several feet high, upright, stout, fastigiately branched ; 
foliage more ample, greener, the lobes broad and very obtuse; 
pubescence fine and dense, but softer, the hairs not pustulate: 
peduncles very short or obsolete and the spikes in threes; sepals 
notably unequal, one much larger than the others, all oblanceo- _ 
