ROBINSON. — SPECIES OF MIMOSA. 331 



strigose pubescence, and strikingly different fruit. — H. & B. in AVilld. 

 Spec. iv. 1035; Benth. Trans. Linn. Soc. xxx. 435. M. hitmilis, H. & 

 B. 1. c. 1037. 31. intermedia, Kunth, Mini. 16, t. 6. — Near Tapachula, 

 Chiapas, Nelson., no. 3851 ; Central America, Herb. Pavon, ace. to 

 Hemsl. (Trop. Am.) 



++ ++ -w Ascending or erect, siiffruticose : leaf-rhacliis usually armed by pairs of 

 spines between the pinnae ; pods oblong, elongated, 4 to 9 cm. in length. 



67. M. asperata, L. Strigose-birsute: branches thickish, sub-herba- 

 ceous, pithy, armed with scattered or opposite, laterally compressed broad- 

 based brown or light gray spines : pinnne 4 to 9 jiairs; leaflets 12 to 

 40 pairs, linear-oblong, acutish, crowded, puberulent, ciliolate : peduncles 

 rather stout, 2 to 5 cm. long ; pods oblong, rounded and mucronate at 

 the apex, covered throughout by short stiffish upcurved tawny hairs •• 

 valves dividing into 15 to 20 short broad segments. — Syst. Nat. ed. 10, 

 1312 ; Benth. 1. c. 437 (where extensive synonymy is cited) ; M. pigra, 

 L. 1. c. M. poIyacantha,hispida, & canescens, Willd. Spec. iv. 1034—1038. 

 31. peUita,Ii. & B. in Willd. I. c. 1037; Kunth, Mim. 27, t. 9. — 

 Widely spread in the tropics of both hemispheres. Mexico, between 

 San Luis Potosi and Tampico, Palmer, no. 1037 (coll. of 1878-1879) ; 

 Jalisco, W. G. Wright, no. 1335, Rose, nos. 1422, 1564, Nelson, no. 

 4136 ; Colima, Palmer, no. 1377 ; Vera Cruz, Bourgeau, no. 2209, 

 Nelson, no. 526, 0. L. Smith, no. 998 ; borders of Oaxaca, Nelson, nos. 

 2333, 2856; Guatemala, nos. 1735 and 3294 of J. D. Smith's sets; 

 Panama, Fendler, no. 98, Seemann, no. 527. 



Var. Berlandieri. Less pubescent: stems merely strigillose : 

 leaves shorter than in the typical form ; pinnae 4 to 6 pairs ; primary 

 rhachis only 3 to 5 cm. long, mostly unarmed : pods sparingly hispid 

 with short more or less strigose hairs, segments of the valves 8 to 15. 

 — 3i. Berlandieri., Gray in Torr. Bot. Mex. Bound. 61; Benth. I.e. 

 423. — Valley of the Rio Grande, near Matamoras, Berlandier, no. 

 3146 ; Micos, San Luis Potosi, Pringle, no. 3798. Careful search fails 

 to show any significant or constant difference between this and 31. aspe- 

 rata, which can be regarded as a specific distinction. Mueller's no. 90 

 from Vera Cruz, Hartmann's no. 519 and Lamb's no. 511 from Sinaloa, 

 show clear transitions to the typical form. 



