118 PROCEEDINGS OF THE AMERICAN ACADEMY 
oblong-campanulate tube: corolla yellow, the keel tipped with violet ; 
standard obovate, 7-9 lines long, much exceeding the keel: pods 
coriaceous, brown, broadly ovate or globose, very obtuse or abruptly 
pointed, 6-7 lines long, somewhat sulcate on both sutures, pubescent 
with short white woolly hairs. — Ledges and cliffs, Mt. Orizaba, 
9,000 ft. August (no. 262). This species is closely related to 
A. Humboldtii, Gray, but differs essentially in its obtuse or abruptly 
pointed subglobose tomentulose pods. 
DesmMopium (HETEROLOMA) SUBSESSILE. Stem herbaceous, trail- 
ing, branched, somewhat hispid : stipules lanceolate, acuminate, ciliate, 
3 lines long: petioles 1-1} lines in length: lateral leaflets elliptic, 
occasionally with a couple of rounded lateral lobes, the terminal 
leaflets broadly ovate, rounded or retuse at the apex, rounded at 
the base, thinly appressed-pubescent on both surfaces, ciliate: racemes 
terminal and axillary, long-peduncled: bracts ovate, acuminate, cili- 
ate, soon deciduous: pedicels in pairs, distant, spreading, 6—7 lines 
long: flowers about 4 lines in length: pods (immature) 5-6-jointed, 
the margins nearly equally notched; joints orbicular, 14 lines long, 
finely uncinate-pubescent. — Wooded hills near Esperanza, 8,000 ft., 
August (no. 825). Near D. Mexicanum, Wats., but distinguished by 
its foliage. 
PHAsEoLus (DREPANOSPRON) EsPERANZE. Stem procumbent, 
stout, furrowed, hispidulous with reversed hairs, 3 feet or more in 
length: leaflets broadly ovate-triangular, 13-2 inches long, three 
fourths as broad, obtusely and hastately 3-lobed, the. lateral leaf- 
lets often entire or with one large rounded lobe, strigulose above, 
pubescent on the nerves below; the lateral lobes rounded, the ter- 
minal triangular, obtuse, mucronate : racemes loosely many-flowered : 
bracts persistent, ovate-lanceolate, acute, ciliate, 2 lines long, shorter 
than the pedicels: calyx pubescent, 1} lines in length: corolla green- 
ish yellow, tinged with purple, 6 lines long: pods (immature) villous, 
slightly curved, 3 inch long, 2 lines broad. — Wooded hills near 
Esperanza, 8,000 ft., August (no. 371). Closely related to P. pedi- 
cellatus, Benth. (ex char.), but differing in the shorter pedicels and 
pubescent stems and leaves; also near P. leptostachyus, Benth. (ex 
char.), which has rhombic-ovate leaflets. 
Erynerum (PARALLELINERVIA) SEATON, Coulter & Rose, n. sp. 
Stem erect, stout, 3-4 feet high: leaves linear, parallel-nerved ; 
radical leaves 12-15 inches long, 4-5 lines wide, the margin toothed 
With paired spines, one much longer and about equal to the breadth of 
leaf; stem leaves all alternate, with marginal spines often in threes and ; a ; 
