396 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



a good polish. " Coralillo " (Oaxaca) ; " frijolillo " (Veracruz); " loro," 

 *' lorito," "conchido" (Costa Rica); " moruro," " moruro prieto," " tengue " 

 (Cuba); "cojobana," " cojoba " (Porto Rico); "cola de marano," "cola de 

 mico," "quebracho" (Guatemala, Honduras, Blake). 



The wood is said to be of excellent quality, and is much used in some part3 

 of the West Indies and Central America for flooring, ceiling, posts, etc. 



15. Pithecollobium leptophyllum (Cav.) Daveau, Bull. Soc. Bot. France 59: 

 635. 1912. 



Mimosa leptophylla Cav. ; Lag. Gen. & Sp. Nov. 16. 1803. 



Pithecollotium palmeri Hemsl. Diag. PI. Mex. 50. 1880. 



Pithecollobium palmeri recurvattim S. Wats. Proc. Amer. Acad. 23: 272. 1888. 



Durango to San Luis PotosI and Puebla ; perhaps also in Sonora ; type from 

 somewhere in Mexico. 



Shrub, 0.6 to 1.5 meters high, very spiny ; leaves small, the pinnae few, the 

 leaflets numerous, 3 to 4 mm. long; fruit flat, brown, puberulent, curved, 1 to 

 1.5 cm. wide. 



16. Pithecollobium flexicaule (Benth.) Coulter, Bot. Gaz. 15: 270. 1890. 

 Acacia flexicaulis Benth. Lond. Journ. Bot. 1: 505. 1842. 

 Siderocarpos flexicaulis Small, Bull. N. Y. Bot. Gard. 2: 91. 1901. 

 Samanea flexicaulis Macbride, Contr. Gray Herb. n. ser. 59: 2. 1919. 

 Tamaulipas and Nuevo Leon. Southwestern Texas. 



Spiny shrub or tree, sometimes 15 meters high, with a trunk 1.2 meters in 

 diameter, the branches irregular and spreading; leaves persistent, the pinnae 

 2 or 3 pairs, the leaflets 3 to 5 pairs, oblong or obovate, 5 to 12 mm. long, thick, 

 lustrous ; flowers yellow, fragrant ; fruit somewhat flattened, hard and woody, 

 10 to 15 cm. long, 2.5 cm. wide, brown or black; wood hard, close-grained, 

 dark red or purplish brown, with yellowish sapwood, its specific gravity about 

 1.04. "Ebano" (Tamaulipas, Nuevo Leon). 



The wood is very durable and is used for fence posts, wagons, cabinetwork, 

 fuel, etc. The green seeds are cooked and eaten, and when ripe they are often 

 roasted and eaten or used as a substitute for coffee. 



17. Pithecollobium confine Standi. Contr. U. S. Nat. Herb. 20: 191. 1919. 

 Baja California ; type from Cape San Lucas. 



Shrub or small tree, 1.5 to 3 meters high, similar to the last species but 

 with capitate flowers. " Palo fierro." 



18. Pithecollobium schaffneri S. Wats. Proc. Amer. Acad. 17: 352. 1882. 

 Samanea schaffneri Macbride, Contr. Gray Herb. n. ser. 59: 2. 1919. 

 Known only from the mountains about San Luis Potosi. 



Shrub, very spiny, pubescent ; pinnae 2 to 4 pairs, the leaflets 2 to 3 mm. long, 

 acute; fruit 7.5 to 12.5 cm. long, 1 cm. wide, straight or somewhat curved 

 densely pubescent. 



19. Pithecollobium tortum Mart. Herb. Fl. Bras. 114. 1837. 



Baja California and Sonora to Oaxaca ; Veracruz and Yucatiin. Central 

 America, West Indies, and South America ; type from Brazil. 



Slender shrub or tree, 3 to 9 meters high, armed with stout spines, the bark 

 smooth, brown; leaflets oblong. or obovate, 7 to 15 mm. long, pubescent or 

 glabrous; fruit 7 to 10 mm. wide, often 20 cm. long or longer, glabrous. " Pora- 

 lana " (Guerrero); " guayaciln " (Honduras). 



20. Pithecollobium tomentosum Micheli, Mem. Soc. Phj's. Hist. Nat. Gen&ve 

 34: 285. pi. 28. 1903. 



Jalisco to Guerrero; Yucatan ; type from banks of the Espfritu Santo, altitude 

 600 meters. 



