EOBINSON. — SPECIES OF MIMOSA. 313 



XXX. 394 (whence foregoing description). — Mexico near Actopan, 

 Schiede, ace. to Benth. (Trop. Am.). 



b. Branchlets and peduncles smooth or merely puberulent. 



1. Leaflets ovate or broadly oblong. 



13. M. lactiflua, Delile. Shrub: spines few, scattered, straight : 

 leaflets 3 to 5 pairs, obliquely ovate or oblong, somewhat rigid, glauces- 

 cent beneath, pinuately veined, glabrous ou both surfaces ; margins 

 slightly cartilaginous, incurved, ciliate with rigidulous stramineous 

 setae: flower 4-merous : legume unknown. — Delile ace. to Benth. 

 Trans. Linn. Soc. xxx. 393, & in Mart. Fl. Bras. xv. pt. 2, 311. — 

 Regarding the Mexican occurrence of this species Bentham (from whom 

 the preceding description is compiled) says, " Delile's specimens were 

 from the Botanical Garden of Montpellier, supposed to be of American, 

 perhaps Brazilian origin. In the Berlin Herbarium there is a specimen 

 from Mexico which agrees with the detailed description I had made 

 (now inserted in the Flora Brasiliensis) except that the leaflets are 

 under instead of over ^ in. long." While this species is known to me 

 only from description I would refer to it Mr. Nelson's no. 1845, collected 

 9 km. above Dorainguillo, Oaxaca, altitude 1375 to 1700 m. 



2. Leaflets rather narrowly oblong. 



14. M. sicyocarpa. Shrub, 1 to 2 m. high, sparingly armed 

 with short scattered recurved spines : branches terete : petioles slender, 

 glandless, 5 or 6 cm. in length, usually armed below the middle with 

 a single short recurved spine : pinnae a single pair, 1 dm. in length ; 

 leaflets 9 to 11 pairs, oblong, oblique at the base, subacute, mucronate, 

 dull green and finely soft-pubescent upon both sides, slightly paler 

 beneath, 20 to 25 mm. in length, a third as broad : peduncles axillary, 

 often geminate, finely pubescent, unarmed : flowers 4-merous : legumes 

 lance-oblong, 25 to 30 mm. long, 8 mm. broad, covered upon margin 

 and valves with weak straight spreading stramineous setiform spines. — 

 Collected by I^. W. Nelson on roadside between San Sebastiana and the 

 summit of the mountain known as the Bufo de Mascota, Jalisco, altitude 

 1550 m., 20 March, 1897, no. 4101. The bristling pods crowded in 

 dense globular beads recall the fruit of the star-cucumber. 



15. M. cserulea. Rose. Stems unarmed, nearly or quite glabrous, 

 6 to 9 dm. hio;h, straia^ht and terete : leaflets narrowlv oblonw, 12 mm. 

 in length, acutish, mucronate, green on both sides, appressed setose- 

 ciliolate, minutely appressed-puberulent or sparingly strigose varying 

 to glabrous, reticulate-veiny : peduncles fascicled : flowers purplish, 



