: De o PITTONIA. 
P. CEPHALOPHORUM. Root not large, nearly or quite per- 
pendicular, several inches long, hard and woody-looking, 
scarcely chaffy, not contorted but merely tortuous, crowned 
by a somewhat tuberiform subglobose enlargement, this sup- 
porting the small basal leaves and rather slender erect stems, 
14 feet high: lowest leaves firm, lance-linear or oblong- 
linear, 1 to 3 inches long including the short petiole, the 
few and reduced cauline ones attenuate at apex, all scabrous 
pubescent beneath; ocreæ 1 inch long, cylindric, closely 
sheathing the stem, herbaceous throughout: flowers in a 
dense hemispherical and capitiform spike, or this sometimes 
a little longer and ovoid; bracts short, thin, inconspicuous, 
ovate, merely acute. 
The type specimens are in my own herbarium, and were 
collected in the Sierra Nevada, Calif.; on Mt. Conness, 3 
Aug., 1890, by W. G. Harford. 
P. vutcanicum. Two feet high and stoutish, from a thick 
and short horizontal superficially seated straight root: low- 
est leaves 8 to 10 inches long, erect, long-petioled, the 
oblong blade tapering very gradually to the petiole, some 
what cuspidately acute at the broad summit, thin, bright- 
green, and glabrous, not revolute nor obviously venulose, 
the midvein beneath broad, liguliform, striate, the cauline 
small, sessile, amplexicaul, their ocreæ 2 inches long, alto- 
gether herbaceous: spike solitary, subglobose and capiti- 
form, about 1 inch broad; flowers white. 
Upper Camp Spring, Crater Lake, Oregon, 14 Aug., 1896, 
E. T. Applegate; the specimen in U. S. Herbarium. 
P. sexuNuM. Root thick and contorted: stems very slender, 
5 to 10 inches high: lowest leaves lance-linear, oblong-linear, 
and linear, the largest 2 inches long; on short and slender 
petioles, of firm texture, scaberulous beneath, the flat mid- 
vein pervaded by a single median nerve, transverse veinlets | 
