z + x 
#% ¢ 
p17 J = thy. oO, . 
* 
long. Leaves smooth; the common petiole — indies long, and terminated 
by a spinescent point ; leaflets from half an inch to an inch long, and 1—2 
lines broad, somewhat coricaceous, sparingly but prominently veined under-. 
neath. Spikes. 2—4 inches long, and about one-third of an inch in diameter. 
Flowers yellow, very fragrant, arly sessile on the rachis. yx cam- 
fpside. te ay s-toothed, smooth. Peta Is ovate-obl ng, hairy 
of septum, which divides the pulp into two parts. Seeds ovate Saiaertien, 
c Feamiesde! 2 smooth and hard. aye yellowish, surrounded witha 
“thiralbum 
; A characteristic tree in the mountainous part of Northern California, par- 
a —e along the Mohahve and Virgen rivers, flowering the latter part of 
A 
his nA belongs to the section strombocarpa of Mr. Bentham,* 
ck es the Acacia strombulifera of Wildenow. In the structure 
fed. a is so remarkable that we at one time regarded it as a distinct 
." “genus, to which we gave the name of Spirolobium. 
ere are numerous other Leguminoste in the collection, including, as 
be gia Sees species of Lupinus, Astragalus, Oxytropis, and 
AL e new; also, Thermopsis rhombifolia and mon- 
shrubby Psoralea (or ene allied genus) covered with. 
a beautiful 
‘ bight miata 
Cowanta pricata. D. Don. (7° 
a Specimens of this plant, without a ticket, were in tk the collection; denbe- 
on 2 themapper waters of the 
d perhaps be regarded as 
Re a) 
| a cLAvzrormis. Torr.and Frém. 
or oblong, tee or postion merce at By dg 
3 sca ith several sma Ul le: — 
clava 
