54 PITTONIA. 
pid with deflexed hairs and also villous: nutlets 4, small, about 
î line long, rather narrowly ovate-trigonous, the groove divari- ; 
cately forked and open, the surface rather strongly tuberculate- 
roughened, and with the dense lesser and scabrous muriculation 
very minute, appearing under an ordinary lens as mere white dots. 
Specimens from Shasta Co., California, 25 May, 1894, collected | 
by M. S. Baker and Frank Nutting, and distributed as C. ambigua. 
The nutlets of this, as to their ventral-face characters, respond 
to the figure of those of true Ọ. ambigua ; but their outline, | 
and tuberculation are very different. 
C. SIMULANS. Rather slender, bushily branched from the | 
base or near it, often 2 feet high, the stems and branches only 
scantily strigose-pubescent, the scattered leaves more so beneath, _ 
less so above: spikes lax, in pairs or solitary, often 6 inches | 
long: fruiting calyx 3 lines long or more, narrowly lanceolate, 
attenuate at tip, appressed villous toward the base, and with 
some short deflexed bristles up and down the back: nutlets | 
ovate, abruptly blunt-pointed, sparsely low-tuberculate, and 
very minutely and closely white-muriculate: groove forked at | 
the very base and closed throughout. 
Common in the foothills of the Sierra N evada, California, — 
distributed from Amador Co., by Geo. Hansen in 1896, under 
n. 1903, as to my set. In habit, characters of inflorescence and | 
calyx the species curiously simulates C. Zorreyana, while its {4 
nutlets, (with a slight difference) are those of C. ambigua, mnl 
its allies. 
C. FALLAX. With much the aspect of a slender C. muricu- — 
/ata, less than a foot high, the branches with scattered oblong- 
linear obtuse foliage and terminating in 3 divergent short and 
rather dense spikes; stem sparsely villous-hirsute, the foliage as 
sparingly somewhat strigose, the calyxes with a dense pubescence — 
under the rather few very hispid spreading hairs: calyx-segments — 
lanceolate, short, the tips not attenuate: corolla minute: nut- 
lets ovate-lanceolate from a truncate base, traversed ventrally by — 
$ 
