330 PITTONIA. 
all broad, truncate and mucronate, pubescent: corolla an 
inch long, white or cream-color. ; 
Collected at Mormon Bar, Mariposa Co., California, in 
May, 1895, by Mr. J. W. Congdon. Remarkable for the 
conspicuous pair of unaltered leaves which subtend the 
calyx at some distance below it, and which take the place 
of the bracts which, in typical CONTEN HUN enfold and con- 
ceal the calyx. 
C. ARIDUS. Stems tufted on a branching root, at first 
ascending, at length several feet long, leafy and floriferous 
throughout and strongly twining; herbage somewhat cine- 
reous with a short fine pubescence: all except the lowest 
leaves subsessile, triangular lanceolate, very acute, the base 
shortly sagittate-lobed and clasping: peduncles twice ex- 
ceeding the leaves, 1-flowered: bracts ovate-lanceolate, thin, 
closely investing the calyx, the sepals of which are also 
ovate-lanceolate and acute: cream-colored corolla rather 
large, 14 inches long, and as broad. 
Desert foothills in the interior of southern California ; 
twice distributed by Mr. Parish as C. occidentalis, which is 
an extremely different plant of the seaboard. 
C. NurTALLIL C. occidentalis, var. tenuissimus, Gray, in 
part. With fibrous roots and numerous long trailing or 
twining stems, these with woody and persistent base: herb- 
age with minute and sparse but tomentulose pubescence: 
leaves an inch long or more, petiolate, strongly sagittate or 
hastate, the main blade triangular-lanceolate, the long basal 
lobes from narrow and entire to broader and deeply toothed 
or bifid: flowers solitary, on long and rather stout peduneles: 
bracts closely subtending the calyx, from somewhat larger 
than the sepals to distinctly smaller than them, oval or 
ovate, obtuse or even truncate, mucronate; the sepals very 
similar; corolla whitish, 14 inches long d as broad: the 
small black seeds coarsely tuberculate. 
Common in open ground among the hills along and near 
