298 PITTONIA. 
My opinion respecting the range of this type species of the 
genus it that occurs only in what is properly denominated 
southern California, namely, from Monterey County to San 
Diego, and in the coast ranges exclusively, where, however, it 
is not the only species. 
2. D. CAUDATA. Shrub apparently slender and the branches 
not rigid, even the maturer dull-brown and striate rather than 
somoth and polished: leaves yery hard and rigid, about 22 
inches long, linear-lanceolate, cafidatel y acuminate, closely erose- 
denticulate, the 3 pairs of veins almost parallel, the lowest pair 
either vanishing at the margin above the middle or more con- 
tinuous, the uppermost pair running to the apex of the leaf, fe 
irregular but always elongated, reticulation occupying interven- 
ing space, this conspicuous on both faces, smoothish above, 
closely muriculate-scabrous beneath: neither flowers nor pods 
known. 
Collected somewhere in California, probably in the region 
of San Luis Obispo, by Mrs. R. W. Summers in 1884; type in 
U. S. Herb., to which it was communicated as a duplicate from 
Herb. Parke, Davis & Co. of Detroit. There is a recent and 
better specimen in U. S. Herb. from the Tassajara Hot Springs, - 
Monterey Co., by A. D. E. Elmer, June, 1901. 
3. D. FASTIGIATA. Shrub with remarkably stout, rigid fasti- 
giately crowded short branches, their bark straw-colored, smooth 
and somewhat polished: leaves hard and rigid, the largest 3 
inches long, lanceolate, the smaller and fascicled ones more 
narrowly lanceolate, all pungently acute, marginally somewhat 
crisped as well as denticulate and distinctly 3-nerved from base 
te apex, the nerves parallel, well back from the margin in the 
larger, very near it in the smaller; reticulation distinct on the 
upper face, less so on the lower, all of it little elevated and per- 
fectly smooth: calyx spherical: corollas ł inch wide. 
San Gorgonio Pass, mountains of Southern California, 4 April; 
1898, J. B. Leiberg; type in U. S. Herb. 
