ROBINSON. — SPECIES OF MIMOSA. 323 
++ + Pubescence not rufous: pod surrounded by a lacerate wing; valves neither 
etose nor spinose 
fA 40. M.lacerata, Rosr. Stout shrub, 15 to 25 dm. high, armed 
with pairs of dark brown laterally compressed very broad based infra- 
stipular spines : pinne 5 to 9 pairs; leaflets 8 to 17 pairs, canescent- 
puberulent: legumes brown, oblong, obtuse at the apex and base, 4 to 
5 cm. long, 1.5 em. broad, including the lacerate wings. — Contrib. 
U. S. Nat. Herb. v. 141. — Vicinity of Piaxtla, Puebla, at 1200 m. 
altitude, , Nelson, no. 2008; also on limestone hills between Tehuacan, 
Puebla, at 1850 m. altitude, Pringle, no. 624: 6247 (distributed by clerical 
error as M. lacerans). 
++ ++ ++ Pubescence rufous, dense. 
41. M. mollis, BentH. Pinne 4 to 5 pairs ; leaflets 6 to 10 pairs, 
oblong, villous upon both sides, 8 to 12 mm. long: heads fascicled at the 
nodes ; flowers villous. — Benth. in Hook. Jour. Bot. iv. 408, & Trans. 
Linn. Soc. xxx. 429. — Mexico, Andrieux, no. 400. Species not seen 
by the writer; the description compiled. 
+ 42. M. Galeottii, Benru. Tall shrub or small tree, 3.5 to 4.5 m. 
high, with stoutish flexuous branches: branchlets densely covered with 
short rufous thickish hairs: spines infra-stipular and geminate or soli- 
tary: leaves subsessile, 6 to 10 cm. long; pinne 20 to 25 pairs, 10 to 
18 mm. long ; leaflets about 16 pairs, 2 to 3 mm. long, nearly glabrous 
€xcept upon the shortly ciliate margins: peduncles fascicled in the axils, 
14 to 17 mm. long, copiously and retrorsely pubescent with thick tawny 
hairs: flowers yellowish turning roseate: pod (acc. to Benth.) broadly 
linear, glandular-puberulent, setove-prickly upon the sutures, almost 
naked on the valves. — Benth. in Hook. Lond. Jour. Bot. v. 92, & Trans. 
Linn. Soc. xxx. 429. Acacia hirta, Mart. & Gal. Bull. Acad. Brux. 
xX. pt. 2, 318.— Forests of Yolotepeque, western Cordillera of Oaxaca, 
altitude 2460 m., Galeotti, no. 3165. It cannot be doubted that this 
Species is also sepeeabants by Mr. Pringle’s no. 6384 collected on moun- 
tain sides above Cuernavaca at 2150 m. altitude. This number was 
unfortunately distributed as J. lacerans, Rose, n. sp.? 
++ ++ ++ ++ Pubescence not rufous: pod (still unknown in M. tenuiflora) often 
nigel 4 upon the margin, but neither surrounded by a wing nor setose upon 
= Pinne a sie pair; leaflets 1 pair on each secondary rhachis, obovate, or 
suborbicular, 2 to 4 mm. in length. 
o. 438. Me zygophylla, Bent. Small much-branched shrub with 
Single intra-nodal spines: petioles short, thickish, somewhat flattened ; 
