KOBINSON. — SPECIES OF MIMOSA. 315 



*+ ++ Spines numerous, small, recurved, somewhat 4-seriate : pinnae 4 to 5 pairs : 



fruit 2 cm. broad. 



18. M. leptocarpa, Rose. A straggling shrub with long lax 

 glabrous branches: pinnae 4 to 5 pairs, often alternate; leaflets 8 to 11 

 pairs, oblong, obtuse, minutely puberulent (under lens) : legume 12 or 

 15 cm. long, 2 cm. broad; replura armed with a few short firm recurved 

 prickles. — Contrib. U. S. Nat. Herb. i. 326. — Manzanillo, Palmer, 

 no. 1341 (December, 1890). An anomalous species known only in 

 fruit, so that even its generic affinities are subject to some doubt. Dr. 

 Rose has found the remains of five stamens clinging about the base of 

 the legumes. The fruit is of course extraordinarily large for Eamimosa, 

 but seems to possess the distinctive characters of the genus. 



Subg. 3. Habbasia, DC. (as extended by Benth.). Stamens twice 

 as many as the lobes of the corolla. — DC. Mem. Leg. xii. 418 & 

 Prodr. ii. 428; Benth. Trans. Linn. Soc. xxx. 389, 411. 



* Flowers in cylindrical lax or dense elongated or rarely (in M. adenantherokles) 



subcapitate spikes. — Leptostuchijce, Benth. 1. c. 389, 412. 

 -I- Leaflets 1 to 5 rarely 7 pairs, elliptical, ovate, or obovate, not twice as long 



as broad. 



t-t- Leaflets and younger parts tomentose or tomentulose. 

 = Leaflets 15 mm. or more in length. 



19. M. spirocarpa. Rose. Showy tomentose shrub, sparingly 

 armed with scattered spines : pinnas 2 to 4 pairs ; leaflets 1 to (less 

 frequently) 3 pairs, broadly obovate : short-peduncled spikes numerous, 

 rather slender, 7.5 cm. in length, purplish turning white : corolla 5-lobed : 

 pods small, light-colored, tomentulose, soon coiled through 1 to 1^ 

 revolutions. — Contrib. U. S. Nat. Herb. iii. 316, t. 11. — Sinaloa, 

 Culiacan, Palmer, no. 1476, H., and later between Rosario and Colomas, 

 Rose, no. 1606. Notwithstanding the exceptional form of the fruit 

 there can be no doubt that Dr. Rose has correctly determined the 

 affinities of the species. 



20. M. gnatemalensis, Benth. Fulvous-tomentose shrub armed 

 with a few scattered straight spines : pinnte 3 to 6 pairs ; leaflets 3 to 

 6 pairs, elliptical : spikes 5 cm. long on peduncles half as long ; flowers 

 silky- villous : legume still unknown. — Bot. Sulph. 89, «fe in Hook. 

 Lond. Jour. Bot. v. 89. Inga ? Guatemalensis, Hook. & Arn. Bot. 

 Beech. 419. — W. Mexico, Cerro de Pinal, Seemayin, Tepic, Barclay 

 (ace. to Hemsl.), Lamb, no. 583, near Colomas, Rose, no. 3200 ; Realejo, 

 Nicaragua, Sinclair. 



