192 PITTONIA. 
it from the same vicinity as early as 1882, supposing it 
to represent A. suffrutescens, to which it is truly related, 
but is a many times larger plant, with long racemes of 
pods; and it has not at all the notably ligneous stem of 
that species. 
While all the foregoing are characterized, as a group, by 
their deflected or refracted pods, those next succeeding ex- 
hibit siliques borne more or less horizontally on usually 
stout and divaricate pedials. They are largely segregates 
of the so-called A. arcuata, Gray, which name is not tenable 
for any American Arabis, being preoccupied for an European 
species, or subspecies of A. alpestris, published much earlier 
by Shuttleworth. 
/ À. MAXIMA. Streptanthus arcuatus, Nutt. T. & G. Fl. i, 77. 
Arabis arcuata, Gray, in part. Stems stoutish and tall (2 
feet high or more), numerous, one from each branch of & 
multicipitous woody caudex: basal leaves numerous and 
tufted, commonly 14 to 3 inches long, oblanceolate, often 
very narrow, conspicuously toothed or subentire, marked 
with a strong white midvein, canescent on both faces with 
short branched hairs; cauline 1 to 14 inches long, lanceo- 
late, acuminate, sagittate-clasping, with the usual pubes- 
cence, this extending to the stem, pedicels and calyx: 
flowers large (about 3 inch long); calyx purplish, corolla 
deep red-purple. 
Mountains of southern California, from Santa Barbara 
and Mariposa Counties southward to the peninsula. The 
long pods are distinctly curved, though less notably so than 
in some of the succeeding species which were erroneously’ 
referred here by A. Gray. 
‘A. CAMPYLOLOBA. Perennial, but lacking the freely 
