STANDLEY — TREES AND SHRUBS OF MEXICO. 391 



This tree is very common in some localities. The wood is used in car- 

 pentry. 



Albizsia lophcmtha Benth., a native of Australia, vpith spicate flowers, nar- 

 row leaflets, and small pods, is cultivated in central Mexico. 



13. ENTEBOLOBIUM Mart. Flora 20 ': Beibl, 117. 1837. 



1. Enterolobium cyclocarpum (Jacq.) Griseb. Fl. Brit. W. Ind. 226. 1860. 



Mimosa cyclocarpa Jacq. Fragm. Bot. pi. 34, /• i. 1809. 



Mimosa parota Sesse & Moc. PI. Nov. Hisp. 177. 1887. 



Sinaloa to Tamaulipas, Veracruz, and Chiapas. Central America, West In- 

 dies, and northern South America. 



Large unarmed tree, 12 to 30 meters high or larger, with broad spreading 

 crown, the trunk 0.6 to 2.5 meters in diameter; bark rough; leaves bipinnate, 

 the leaflets very numerous, linear-oblong, 10 to 12 mm. long, acute or obtuse; 

 flowers small, white, sessile in dense heads ; fruit flat, coiled, 8 to 11 em. in 

 diameter, dark brown, lustrous ; seeds dark brown or black, about 12 mm. long ; 

 wood hard, resistant, elastic, grayish tinged with yellow, sometimes livid and 

 mottled. " Orej6n " (Veracruz); " huinecaztle," " huanacaxtle " (Sinaloa); 

 "parota" (Michoacan, Jalisco, Guerrero) ; "piche" (Tabasco) ; " cuanacaztle," 

 "nacazle" (Oaxaca, from the Nahuatl cuau-nacaztli, "ear-tree"); " cascabel 

 sonaja " (Tamaulipas); " guauacaste " (Guatemala, Nicaragua, Honduras, 

 Costa Rica) ; " nacaxtle " (Veracruz); " conacaste " (Guatemala); " anjera," 

 "carito," "carita" (Colombia); " caro hembra " (El Salvador, Venezuela); 

 "oreja de judfo," "arbol de las orejas " (Cuba). 



The tree grows rapidly and makes an excellent shade tree because of its 

 broad top. The large trunks are used for canoes, water troughs, etc., and the 

 wood is very durable in water. It is employed in carpentry and cabinetwork. 

 The pods are said to be an excellent feed for cattle, and the seeds as well as 

 the young pods are sometimes cooked to be used for human food. The fruit 

 and bark are rich in tannin. Rose reports that in Sinaloa the bark and fruit 

 are used as a substitute for soap in washing woolen goods and that a syrup 

 made from the bark is used for colds. The fruit is used as a soap substitute 

 in Venezuela also. The gum which exudes from the trunk is employed in 

 Sinaloa as a remedy for bronchitis. 



14. PITHECOLLOBIUM Marat. Flora 20": Beibl. 114. 1837. 



Reference: Benth. Trans. Linn. Soc. Bot. 30: 570-598. 1875. 



Shrubs or trees, spiny or unarmed ; leaves bipinnate, the leaflets few or 

 numerous, the petioles usually glanduliferous ; peduncles mostly axillary and 

 solitary or fasciculate, or sometimes terminal and racemose, the flowers 

 capitate or spicate; fruit very variable. 



PithecolloMum muJUflorum Benth. has been reported from Mexico at various 

 times, but apparently it is not found there. 



Leaflets large, 0.7 to 2.5 cm. wide or larger, if less than 1 cm. wide the blades 

 rounded and nearly as broad as long; leaflets always few (1 or 2 pairs). 

 Plants very spiny. 



Flowers in long spikes. 



Calyx less than one-fourth as long as the corolla. Stamen tube very 



long-exserted 1. P. macrosiphon. 



Calyx almost or fully half as long as the corolla. 



Stamen tube included or short-exserted ; bracts deltoid, minute, about 

 as broad as long; valves of the fruit comparatively thin. 



2. P. lanceolatum. 

 55268—22 15 



