STANDLEY TREES AND SHRUBS OF MEXICO. 369 



The Chiapas plant { knowu as " uaxi " or " guacis " ) has very short fruit, 

 and is perhaps distinct. The seeds are eaten raw when they are green. 



11. Leucaena greggii S. Wats. Proc. Amer. Acad. 23: 272. 1888. 

 Coahuila and Niievo Leon ; type from Rinconada. Southwestern Texas. 

 Shrub or small tree, 3 to 4.5 meters high; leaflets 5 to 7 ram. long, acute, 



glaucous ; flower heads 1.5 cm. in diameter ; fruit 14 to 19 cm. long, 1 cm. wide ; 

 wood hard, close-grained, brown, its specific gravity about 0.92. 



12. Leucaena pulverulenta (Schlecht.) Benth. in Hook. .Tourn. Bot. 4: 417. 

 1842. 



Acacia pulverulenta Schlecht. Linnaea 12: 571. 1838. 



Nuevo Le6n, Taniaulipas. and Vei'acruz ; type from San Antonio, Veracruz. 

 Southwestern Texas. 



Tree, sometimes 18 meters higli, the tall straight trunk sometimes 50 cm. in 

 diameter, covered with cinnamon-brown bark ; leaflets 3 to 4 mm. long, glabi'ate ; 

 flowers white, sweet-scented ; fruit 11 to 18 cm. long, about 1.5 cm. wide ; wood 

 hard, heavy, close-grained, of a rich, dark brown color, the sapwood bright clear 

 yellow, the specific gravity about 0.67. " Tei>eguaje," " quiebra-hacha " (Tamau- 

 lipas ) . 



The tree is a source of lumber, which is employed for general purposes. 



13. Leucaena glauca (L.) Benth. in Hook. Journ. Bot. 4: 416. 1842. 

 Mimosa glauca L. Sp. PL 520. 1753. 



Jalisco to Michoacan, Chiapas, and Yucatan. Widely distributed in tropical 

 and subtropical America. 



Shrub or tree, sometimes 10 meters high, with a trunk 10 cm. in diameter, tlie 

 bark dark brown, somewhat scaly ; leaves 10 to 30 cm. long ; flowers whitish ; 

 fruit 10 to 15 cm. long, 1.5 cm. wide; wood hard, close-grained, light brown. 

 "Xaxim" (Yucatan, Maya); "uaxi," •' guacis " (Chiapas); "aroma blanca " 

 (Cuba) ; " hediondilla " (Porto Rico) ; "granaliuo" (Santo Domingo). 



There is a prevalent belief in tropical America that if horses, mules, or pigs 

 eat any part of the plant their hair will fall out. Cattle are said not to be 

 affected, and in Mauritius the plant is considered valuable as forage for goats. 

 The seeds are sometimes used for making necklaces, bracelets, and other articles. 

 Grosourdy reports that the roots have emmenagogue and abortive properties. 

 The plant has been introduced into the tropics of the old World, where it is 

 sometimes planted for hedges. It grows readily from cuttings. Its most com- 

 mon English name is "lead-tree," but in the Bahamas it is known as " jumby- 

 bean." 



14. Leucaena brachycarpa Urban, Symb. Autill. 2: 265. 19iX). 

 Veracruz. Described from plants cultivated in Jamaica. 



Tree, 7.5 meters high ; flower heads 1 cm. in diameter ; fruit 10 to 11 cm. long, 

 1.2 cm. wide. 



15. Leucaena stenocarpa Urban, Symb. Antill. 2: 266. 1900. 

 Oaxaca ; type from foothills of the Sierra de San Felipe. 



Small tree, 4.5 meters high ; fruit about 10 cm. long and 1.2 cm. wide. 



DOUBTFUL SPECIES. 



Leucaena laxifoi.ia Urban, Symb. Antill. 2: 296, 1900. Described from Mex- 

 ico. Closely related to L. dirersi folia (Schlecht.) Benth. 



Leucaena teichandra (Zucc.) Urban, Symb. Antill. 2: 267. 1900. Acacia tri- 

 Chandra Zucc. Abb. Akad. Wiss. Miinchen 2: 349. 1838. Described from culti- 

 vated specimens, probably of Mexican origin. Very closely related to L. diversi- 

 foUa, and doubtfully distinct. Bentham considered it synonymous with that 

 species. 



