154 Preussii. 
species grows from Moab Utah on thé Grand river, down the Colorado 
to Nevada and westward to Amargosa desert California and south- 
ward west of the Colorado river to the Mexican line. Most of the 
Utah forms have congested inflorescence and few flowers. ; 
Astragalus Preussii var. Eastwoodz Jones Cont. 6 368 (1894) as 
species. A, Preussii var. sulcatus Jones, Phaca Rydberg. Pods about 
oval, about 1.5 cm. long and 1 cm. high and wide, straight, abruptly 
rounded at both ends, very shortly-stipitate, shortly-apiculate-beaked, 
chartaceous, a little obcompressed, sulcate rather deeply ventrally, 
and variably sulcate dorsally. Flowers few and short-racemose, as 
in the type but banner often erect, and keel tip often erect and 4-5 mm. 
high and triangular. Calyx as in the type, but black-speckled. Ped- 
uncles shorter than the leaves. Leaves very narrow, very many, 1-1.5 
dm. long, strict with about 10 pairs of linear-lanceolate and very acute 
leaflets, 7-20 mm. long. Stems ceespitose, decumbent from a thick 
and woody root, rarely over 2 dm. long, rather slender and with short 
internodes. Growing on bare rocky ledges or outcrops in deserts, 
Lower Temperate life zone from Moab and Thompsons Springs 
and Green River Utah to Monticello. A. Preussii var. latus Jones (var. 
arctus Sheldon) is a similar form with stipe often nearly as long as 
calyx and pods not sulcate. Calyx 3 mm. wide and 1 cm. long, the 
teeth subulate and about one third as long. The leaflets generally 
elliptical and barely acute, often 7 mm. wide, but varying (as they do 
in the var. Eastwoodz) from linear to broadly elliptical even on the 
same plant, the earlier leaflets are broader and the late ones narrower, 
One would hardly be prepared for such extreme variations in leaflets in 
the same species, and in habit, but these are manifestly all forms of 
one species as is shown by similar variations in A. Pattersoni. as well 
as in this species. 
110. Astragalus ampullarius Watson Am. Nat. 7 4 (1873). Pods 
ascending, oval-ovate, about 2 cm. long and 1 cm. wide, about round 
in cross section, conical-beaked and straight, about as in A. ascle- 
piadoides, chartaceous, with filiform stipe about 2 em. long and 
three times as long as calyx. Flowers purple, the banner nearly 
2 cm. long and narrow, much longer than the very obtuse keel. 
Calyx tube campanulate-cylindric, 4-7 mm. long, a little gibbous, teeth 
minute. Spikes short, 2-3 cm. long, as long as the petioles, rather 
dense. Pedicels stout, 2 mm. long in fruit and about as long 
as the bracts. Leaflets 3-5 pairs, obovate to obcordate-spa- 
tulate, 1-1.5 cm. long, smooth above, 7 mm. long, 4 mm. wide. Sti- 
pules not connate, hyaline, 24 mm. long, broad. Stems short and 
and ascending, hardly six inches long. Pubescence short-strigose 
and appressed. Near Kanab, Utah. Mrs. Thompson. Not since 
seen. Lower Temperate life zone, 
111. Astragalus limatus Sheldon Minn. Bot. Stud. 9 126 (1894). 
Pods obliquely oval-oblong 2-2.5 cm. long and about 1 cm. high and 
8 mm. wide, sessile except for the pseudostipe made by drying of 
pulp, finely cross-ribbed with linear meshes, the ventral suture about 
straight or a little convex above and inclined to be shallow-sulcate, 
Pod abruptly rounded at both ends, shortly beaked or conical-apic- 
ulate (the beak nearly in line with the ventral suture), thin and soft 
when fresh. Flowers' as in A. Preussii, but short-spicate and many, 
banner oblong-elliptical, but larger and coarse, nearly 1.5 em. long, 
with sides so closely reflexed as to touch each other and making it 
seem linear, reflexed part 3 mm. wide on each side in the middle; 
groove deep and narrow, white and with deep-purple veins; white 
spot goes nearly to tip; blade: gently arched to erect from end of 
teeth: Wings broadly linear, purple, nearly straight, narrowed above 
the keel, the blade 1 em. long, 3 mm. wide in the middle and 2 mm. 
. "aet tip, obtuse and not notched, overlapping each other beyond keel 
