275 ^'"  Micranthi. 
246. Astragalus Greggii Watson Proc. Am. Acad. 17 343 
(1882). ,Pods sessile, 1-2 cm. long, 2-3 mm. high, 1 mm. wide, 
broadly linear, reticulated, narrowly and shallow sulcate dorsally 
equally arcuate or arched most below, triangular-acute, smooth, 
laterally flattened, completely 2-celled, erect, inclined to be nar- 
rowed below and résembling A. leptocarpus. Flowers 6-9 mm. long, 
2-4 in a head or short raceme, light-purple, much arched as in A. 
junceus. Banner round, 5 mm. long, abruptly erect. Wings ob- 
liquely obovate, 2 mm. shorter than banner. Keel arched in a half 
circle and 1-2 mm. shorter than the wings. Calyx woolly, oblique, 
with teeth subulate, unequal, curved and as long as tube. Bracts 
small, ovate. Pedicels almost none.  Peduncles subterminal, slen- 
der, 3-7 cm. long. Leaves 2-5 cm. long. Leaflets 4-8 pairs, con- 
tiguous, greener above, obovate to oval or oblong, obtuse to notched, 
woolly to nearly smooth, 2-7 mm. long. Stipules connate below, 
triangular. Internodes 2-3 cm. long. Stems very slender, flexuous, 
about a foot long or more, prostrate to spreading, seemingly peren- 
nial from underground stems, dense and woolly and white on the 
stems and young parts, the hairs spreading or reflexed. This has 
the habit of A. Nuttallianus but pods are higher and the pubescence 
is woolly, also like A. Lindheimeri but with smaller pods and flowers 
and loose pubescence, the pods are about those of A. leptocarpus. In 
the oe of Coahuila, Zacatecas and Nuovo Leon, Mexico, 
ropical. 
. 247. Astragalus Luisanus n. sp. Pods oblong-ovate to broadly 
linear, 7-10 mm. long, a little arcuate, 2-3 mm. high and wide, 
sometimes 5 mm. wide, rather obcompressed, nearly smooth when 
ripe, tapering into a sharp and upturned beak about 2 mm. long, 
suleate dorsally. Flowers 5-7 mm. long, broad, few. Banner oval, 
about 4-7 mm. long, arched abruptly at calyx tips to erect, with 
sides reflexed about 1 mm. wide below. Wings broadly linear, to 
lanceolate, about straight and as long as banner, or arched to 45°, 
about 1 mm. wide and 2 mm. longer than keel. Keel about 4 mm. 
long and 3 mm. high, arched nearly from base to over a half circle, 
the very obtuse tip rather hooked. Calyx nigrescent, about equally 
inserted, about 2 mm. long, campanulate, teeth triangular and 
about as long as tube. Bracts hyaline, hairy, nearly as long as 
calyx tube. Pedicels almost none. Peduncles filiform, 5-7 cm. long. 
Leaves 3-4 cm. long, the upper sessile. Leaflets elliptical, obtuse 
to barely acute, silvery-silky with fine and closely appressed rather 
long hairs, 5-8 pairs. Stipules connate above, small. Stems slender, 
Weak, a tew incnes long, from a woody base and stout root, rather 
densely leafy and with short internodes. Central Mexico, blooming 
in June, probably Middle Temperate life zone, The types are 
Purpus plants Nos. 3208 from near Oaxaca Mexico, and 2477 from 
Esperanza in the State of Puebla. 
