34 Engelmann and Gray, 
230. AstracaLus caryocarpus, Ker. Prairies west of San 
Felipe. April. 
231. Lupinus suscarnosus, Hook. Prairies. April. Plant 
5 to 15 inches high, branching from the base, with rather 
smaller and paler flowers and more silky or woolly inflo- 
rescence than the nearly related L. Texensis,—of which a 
few specimens were intermixed in the collection. 
232. Cassta Cuammcrista, var. cineEREA, Torr. & Gr. 
Sandy places in woods along the Colorado, August. The 
leaves bear setaceous glands between the 4 to 6 lower pairs 
of leaflets; the gland below the lowest pair is stipitate ; and 
the 5 alternate anthers are shorter. 
233. Auearopia GLanpULosA, Torr. & Gr. FI. I. p. 399. 
“This shrub, or small tree, about 10 feet high, with a stem 
6-8 inches in diameter, either grows sparsely or forms thickets 
in the low prairies. It is called musket-tree by the Texans. 
It is first found as a low shrub on the San Bernardo prairie, 
west of San Felipe, but becomes larger and more frequent 
westwardly, giving a new character to the vegetation, as in the 
musket-thickets on the Colorado, along the borders of which 
several Cacti, hereafter enumerated, are abundantly met with. 
It ripens its pods at the end of August.” Lindheitmer.—The 
leaflets vary, often on the same specimen, from narrow linear 
to oblong, and even broadly elliptical. Lindheimer’s speci- 
mens are some of them in fine fruit, showing that the species 
is totally distinct from A. dulcis, (of which Bentham con- 
jectured it might perhaps be a variety,) and also ‘presenting 
some peculiarities that call for more particular remark. The 
mature legumes are from 5 to 7 inches long, raised on a stipe 
which is often an inch in length: they are narrowly linear, 
more or less curved or falcate, very slightly compressed, 
strongly torose, and from 9 to 20-seeded : the epicarp is char- 
taceo-membranaceous, and contains a considerable quantity of 
sweet farinaceous pulp which surrounds the seeds, or rather 
the coriaceous investment in which the seeds are singly con- 
tained. For each seed is enclosed in a distinct and almost 
