390 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



4. Lysiloma aurita (Schlecht.) Benth. Lond. Journ. Bot. 3: 83. 1844. 

 Acacia aurita Schlecht. Linnaea 12: 572. 1838. 



Veracruz and Chiapas ; type from Malpais de Naulinco, Veracruz. Guatemala 

 and Nicaragua. 



Leaves pubescent, tlie leaflets about 3 mm. long ; fruit 10 to 12 cm. long, 2 to 

 2.5 cm. wide, dark reddish brown. 



5. Lysiloma microphylla Benth. Lond. Journ. Bot. 3: 83. 1844. 

 Guanajuato to Chiapas; type from L6on, Guanajuato. 



Tree, 9 meters high ; leaflets 4 to 6 mm. long ; fruit about 13 cm. long and 2.5 

 cm. wide. 



Most of the material recently referred to this species is rather L. divaricata, 

 if Bentham's descriptions are reliable. 



6. Lysiloma watsoni Rose, Contr. U. S. Nat. Herb. 1 : 99. 1891. 

 Known only from the vicinity of the type locality, Alamos, Sonora. 



Shrub or small tree, 3 meters high, the trunk 7.5 cm. in diameter ; leaflets 5 

 mm. long; fruit 2.5 cm. wide. 



7. Lysiloma divaricata ( Jacq.) Macbride, Contr. Gray Herb. n. ser. 59: 6. 1919. 

 Mimosa divaricata Jacq. PI. Hort. Schoenbr. 3: 76. pi. 395. 1798. 



Lysiloma schiedeana Benth. Lond. Journ. Bot. 3: 83. 1844. 



Baja California and Sonora to Veracruz and Oaxaca. Reported from Nicara- 

 gua and Costa Rica. 



Shrub or tree, 3 to 18 meters high, the trunk sometimes almost a meter in 

 diameter, the wood very hard ; flowers white ; fruit 9 to 15 cm. long, 1.5 to 3 cm. 

 wide. " Quiebracha " (Michoacan, Guerrero) ;" tepeguaje " (Sinaloa). 



The wood is used for various purposes and the bark is employed for tanning. 



8. Lysiloma bahamensis Benth. Lond. Journ. Bot. 3: 82. 1844. 

 Yucatan. V^est Indies and southern Florida ; type from the Bahamas. 

 Tree, sometimes 16 meters high, with a trunk 1.2 meters in diameter, the 



crown broad, the bark smooth, gray or brownish ; flowers white ; fruits 8 to 15 

 cm. long, 2.5 cm. wide ; wood hard, tough, close-grained, dark reddish brown, 

 its specific gravity about 0.64. 



The wood is used in the West Indies for making boats. The species has been 

 reported from YucatS,n as L. latisiliqua (L.) Benth. 



9. Lysiloma sabicu Benth. Kew Journ. Bot. 6: 236. 1854. 

 Reported from Yucatan. Cuba (type locality) and the Bahamas. 



Tree 6 meters high; wood hard, heavy, compact, fine-grained, brown, Its 

 specific gravity said to be about 0.90. " Xiaxek " (Yucatan, Maya) ; " sabicti," 

 " jigile," "jigiie bianco," " moruro de costa " (Cuba), 



The vpood is of good quality and very durable in water. Formerly it was 

 much used in Cuba for shipbuilding, and was exported to England to be 

 used for the same purpose, as well as for making bobbins and shuttles. It is 

 employed also for cabinetwork. 



12. ALBIZZIA Durazz. Mag. Tosc. 34: 11. 1772. 



Some of the Old World species yield useful gums and others furnish tan- 

 bark. 

 1. Albizzia occidentalis T. S. Brandeg. Proc. Calif. Acad. II. 3: 222. 1892. 



Baja California and Sinaloa ; Tres Marias Islands ; type from San Jos6 del 

 Cabo, Baja California. 



Tree 5 to 15 meters high, with a trunk sometimes 80 cm. in diameter, the 

 bark smooth, gray; leaves bipinnate, the pinnae about 4 pairs, the leaflets 

 few, obliquely oblong or oval, 2 to 4.5 cm. long, nearly glabrous; flowers yel- 

 lowish white, capitate; fruit flat, 13 to 20 cm. long, 3 to 4 cm. wide. "Palo 

 escopeta" (Baja California) ; " palo fierro," " bolillo," " arellano " (Sinaloa). 



