Astragalus Orizabae var. Irolanus N.Var. Podsovate and short- 
ly acuminate, 2 cm. long. 1 cm. wide, shallow-sulcate at both sutures, 
Leaflets sharply acute at both ends, 1.5-2 cm. long, inclined to be sil- 
ky pubescent. Leaves 3-4 dm. long. Peduncles often 4 dm. long. 
Flowers often 2-3 cm. long. Collected near Irola Mexico by J. N, 
Rose, June 14 1899, Nat. Herb. No. 346530, the upper plant on the 
sheet. Another specimen is from near Lajos Hidalgo, Aug. 5 1905 by 
Rose, Nat. Herb. No. 452656. 
194 Astragalus anisus Jones Cont. 4 34 (1893). Pods about 1.5 
cm. long, oval, completely 2-celled by a thin partition, chartaceous, 
rather spongy and thinly fleshy when green, finely reticulated, a little 
sulcate at both sutures, hardly oblique, few. Flowers spreading, 6-10, 
subcapitate, but short-spicate in fruit. Calyx tube 1 cm. long, with 
the subulate teeth about 2mm.long. Bracts and pedicels about equal 
and 4 mm. long. Peduncles shorter than the leaves, about 2.5 cm. long, 
stout.and erect. Leaves about 5 cm. long, with petioles fully as long 
as the rachis. Leaflets 3-6 pairs, obovate to oval, rounded, 4-7 mm, 
long, contiguous. Stems very short, with internodes hardly as long 
as the lanceolate stipules. Whole plant silvery with rather long and 
echinate and slender hairs fixed by the middle, the calyx only nigres- 
cent. A unique species only a few inches high, never found but once, 
and then only in fruit, near Pueblo Colorado, Lower Temperate life 
zone. 
195 Astragalus orthanthus Gray Proc. Am. Acad. 6 195 (1864), 
Pods about 3.5 em. long, few on the short rachis, inclined to be sul- 
cate at both sutures, finely reticulated and cross-ribbed, completely 2- 
celled. Flowers red, about 3 cm: long, loosely short-spicate, very nar- 
row and with elongated and exserted claws. Banner lanceolate and 
hardly arcuate. Wings linear, hardly as long as the oblanceolate keel 
whose tip is only slightly arcuate and acutish much after the style of 
A. coccineus and giganteus. Calyx tube about 1 cm long, 3mm. wide 
and a little narrowed above, the base obliquely triangular and fleshy 
and rather unequally inserted, the subulate teeth about 3-4 mm. long. 
Bracts and pedicels about equal and 3 mm. long. Peduncles shorter 
than the leaves, 1-2 dm. long. Leaves narrow, almost sessile, with 
12-15 pairs of narrowly elliptical and acutish but not contiguous leaf- 
lets which are nearly 2 cm. long and velvety-hairy to nearly smooth, 
with appressed hairs fixed by the base. Stems 1-4dm. long, ascend- 
ing, internodes rarely 5cm. long. Stipules rather large, triangular. 
Near Saltillo and in Coahuila Mexico, in rocky places, blooming in 
summer, lower part of the Lower Temperate life zone. 
