‘Bulletin University of New Mexico—No. 49 
P. Atigopuytuuvs, collected by Pres. C. L. Herrick 
in Tijeras Canon in July 708. Seems te be similar to 
P. Candidus but leaflets 5 to 7. Very similar to the 
last also but the calyx seemls to be glabrous. My P. 
Macrostachus may belong here. 
P. Purpureous, has short, crowded, oblong head. 
“Sandia Mts.” June 1898. C. S. Herrick. 
9. Rosia, L. Locust. 
Trees or shrubs with prickly spines for stipules, the 
ovate or oblong leaflets stipellate, showy flowers in a 
large axillary raceme, and a flat thin pod margied on 
one edge. The Hastern Locust (R. Pseudacacia) with 
white flowers and the Clammy Locust (R. viscosa) 
with pale rose-colored flowers are commonlv planted. 
R. Nzo-Mextcana, Gray. Shrub 4 to 10 feet high; 
peduncles and short crowded racemes hispid with 
straight gladiferous hairs; calyx finely hispid; corolla 
rose-color. Especially in the Quercus undulata jamesii 
Soc. of the Sandia Mts. but also lower down where it 
is much taller. 
10. Oxytroris, D. Mountain Loco. 
O. tamBerti, Pursh. Silky with fine appressed 
hairs; leaflets mostly linear, flowers rather large, pur- 
ple, violet or sometimes white; pod firm! in texture, 
silky erect, lanceolate or cylindraceous and long point- 
ed, almost 2-celled by intrusian of the ventral suture. 
On the prairies of Rim-Rock. 
11. Astraeuius, Tourn. Milk Vetch. Loco. 
Pods with oneor both sutures turned in, sometimes 
dividing the cell into two leigthwise. A large and dif- 
ficult genus. Mature pods should be secured before 
indentification is attempted in most species. 
*Pod turgid, at least partly 2-celled by the infolding 
of the dorsal suture the ventral being not at all or less 
deeply inflexed. 
Pod ALA ane succulent, thick and fleshy 
- - (1) a. MEXICANUS. 
Pod dry, coriacous, cartilaginous, or membraneous. 
Completely 2-celled, sessile. 
Ovate or sai pan glabrous 
(-2) A. DIPHYSUS. 
Narrowly oblong; deals silky 
- (3) A. MOLLISSIMUS. 
Not ronnadely patted: 
(63) 
