EOBINSON. — SPECIES OP MIMOSA. 309 



■»-<■ 4^ 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 M. Jlorihunda, 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. 



5. M. 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. 31. viva, Veil. Fl. Flum. Ic. xi. t. 33 (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, ace. to Hemsley, in pastures at 

 Chojojo, near Mazalenango, 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 M. Velloziana, but the specimen lacks fruit. 



*- -t- Stem at least toward the apex covered with soft usually spreading as well 

 as bristly pubescence or rarely in 21. Jlorihunda merely strigillose. 



•w- 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. 1. c. 391. 

 M. notata, Steud. Flora, 1843, 758, & M. Hostmanni, Benth. in Hook. 

 Lond. Jour. Bot. v. 84, ace. to Benth. — Trop. S. Am. 



