60 Contributions to Western Botany. 
a little ascending; keel gently rounded from base to tip, 3” long, 
tip erect, blunt, purple, about the shape of that of A. amphioxys; 
calyx tube cylindrical, 24” long, obliquely inserted, straight, 
nigrescent; teeth subulate, 1” long; pedicels 1” long, stout, erect 
in flower and reflexed in fruit; bracts ovate, 1” long; peduncles 
sulcate, straight, 2’ long, slender, floral rachis about 3’ long; 
leaves 3’ long, the petioles of the upper ones about as long as the 
lower leaflets; leaflets elliptical-cuneate, mostly emarginate, peti- 
olulate, 6-9” long, 3-4” wide, 7-9 pairs, thin, contiguous; stipules 
very small, not connate, ovate, green, adnate, 2”’ long above and 
1” long below; stems 1-2° long, tufted from a woody root, sulcate, 
erect but weak and flexuous; lower internodes about 3’ long, the 
upper 6-12” long; pubescence very scanty, appressed, of slender 
and tapering hairs. Eastern Oregon, ia Snake River Canyon, 
near Ballard’s Landing, Cusick. Belongs to the A. arrectus 
group and nearest to A. secaphoides. More material just received 
shows pods rugose, reflexed, stipe often 1’ long, septum intruded 
even 2” deep. 
An examiuation of the type A. arrectus Gray shows that the — 
southern plants referred to it by Watson belong to a closely 
allied species whose extreme form is represented by A. eremiti- 
cus Sheldon, with almost papery pods. The intermediate form 
given below could be referred to either species equally as well, as 
it has the pods nearly of the former and the leaves and habit of 
the latter. There may be intergrades but the writer has seen 
none in twenty years’ field work. In fact none are known 
between this form and A. eremiticus but they are to be expected. 
Should none occur the following variety may be known as A. 
Spencianus. 
A. eremiticus var. Spencianus n. var. This is what has here- 
tofore been regarded as the type of A. arrectus, but that species 
belongs to the Leibergi-Palousensis group and probably includes 
both those species. The present variety is the characteristic 
form of eastern Nevada. Pods barely obcompressed, coriaceous 
and rather rugose, narrowly oblong, 7-12” long, 2-24” wide, 
