- 
ROBINSON. — SPECIES OF MIMOSA. 309 
++ ++ Shrub, moderately armed with small scattered light-colored recurved spines : 
margin of legume bearing very short incurved bristles; valves strigillose and 
also finely pubescent. 
# 4. M. manzanilloana, Rose. Branches sometimes slightly stri- 
gose, mostly glabrous, terete, slender, at length verrucose: leaflets 
oblong, acutish or obtusish and mucronate, glabrous above, setose on 
the edge and lower surface; petioles slender, glabrous, slightly armed: 
peduncles slender, 2.5 cm. or more in length: buds considerably exceeding 
the very small and inconspicuous bracts. — Contrib. U. S. Nat. Herb. i. 
326, — Manzanillo, Mexico, December, 1890, Palmer, no. 905. Near 
the common VM. floribunda, Willd., but essentially glabrous and of much 
more slender habit. 
“+ ++ ++ Scandent shrub copiously armed with recurved more or less 4-seriate 
spines: margin of legume covered with long straight acicular bristles; valves 
glabrous. 
ee es Velloziana, Mart. Glabrous except for the strigose bristles 
of the stipules and leaflets : petioles stout, copiously armed with retrorse 
spines : peduncles short, 12 to 16 mm. in length: bracts in the young 
heads conspicuous, setose-ciliate, equalling or exceeding the buds. — 
Herb. Fl. Bras. 185, & Flora, xxii. pt. 1, Beibl. 9; Benth. Trans. Linn. 
Soc. xxx. 390. M. viva, Vell. Fl. Flum. Ic. xi, t.83 (where leaflets are 
figured with too fine and copious pubescence), not L.— Isthmus of 
Panama, Seemann, no. 100 (in herb. Gray), and at Chagres, 19 Febru- 
ary, 1850, Fendler, no. 91. Also, acc. to Hemsley, in pastures at 
Chojojo, near Mazatenango, Guatemala, Bernoulli, no. 60, and at Guana- 
caste, Costa Rica, Oersted. (Also S..Am.) No. 4133 of Captain J. D. 
Smith’s distribution, collected at Malpais, Dept. Santa Rosa, Guatemala, 
and determined as this species by Micheli, differs in its less armed stems 
and petioles, longer peduncles, and inconspicuous floral. bracts. It is 
undoubtedly distinct from MZ. Velloziana, but the specimen lacks fruit. 
+ Stem at least toward the apex covered with soft usually spreading as well 
as bristly pubescence or rarely in M. floribunda merely strigillose. 
*+ Slender, herbaceous or suffrutescent: leaflets obovate to oblong, rounded and 
mucronulate at the apex, appressed-villous or setulose upon both surfaces: 
legume copiously setose on valves and margin. 
6. M. debilis, H. & B. Scarcely armed: pubescence fine, spreading : 
petioles long and slender, unarmed: pods copiously setose on margins 
and valves. H. & B, in Willd. Spec. iv. 1029; Benth. I. ¢, 391. 
- notata, Steud. Flora, 1843, 758, & M. Hostmanni, Benth. in Hook. 
Lond. Jour. Bot, y. 84, ace. to Benth. — Trop. S. Am. 
