380 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



" quisache tepano " (Michoacau, Guerrero); " algarroba " or " algarrobo " 

 (Sonora, Oaxaca) ; " espino " (Sinaloa). 



The bark is sometimes employed as a remedy for indigestion, and tlie wood 

 for making charcoal. 



40. Acacia crassifolia A. Gray, Mem. Amer. Acad. 5: 317. 1854. 

 Coahiiila and San Luis PotosI ; type from La Pena, Coahuila. 



Branches reddish brown, glaucous when young, armed with few very small 

 spines; leaflets rounded or subren^form, 2 to 5 cm. wide, glabrous, very thick, 

 with prominent venation ; heads racemose ; fruit thick, about 7 cm. long and 2 

 cm. wide, slightly curved, glaucous. 



41. Acacia rosei Standi. Contr. U. S. Nat. Herb. 20: 187. 1919. 

 Sinaloa ; type locality, Mazatlan. 



Pinnae 2 pairs, the leaflets oval, 2 to 4.5 cm. long, thin, glabrate; flowers 

 white; fruit flat, very thin, about 1 cm. wide. "Day." 



42. Acacia crinita T. S. Brandeg. Zoe 5: 198. 1905. 

 Sonora and Sinaloa; type from Culiac^n. 



Low shrub, the stems covered with stiff yellowish hairs 5 mm. long; leaf- 

 lets oval, 1.2 to 2 cm. long, glabrous, pale beneath ; flowers white. 



43. Acacia anisophylla S. Wats. Proc. Amer. Acad. 21: 452. 1886. 



Known only from the type locality, mountain canyons near JimuWo, Coa- 

 huila. 



Small tree, sparsely armed with short straight spines ; pinnae 1 to 3 pairs, 

 the leaflets 4 to 7 pairs, oblong, 6 to 14 mm. long; fruit compressed but very 

 thick, 10 to 12 cm. long, somewhat glaucous. 



44. Acacia polypodioides Standi. Contr. U. S. Nat. Herb. 20: 184. 1919. 

 Oaxaca and Chiapas ; type from Chiapa, Chiapas. Nicaragua. 



Unarmed shrub, copiously pilose ; leaflets numerous, 3 to 5 mm. long ; 

 flowers white ; fruit flat, thin, 8 to 11 mm. wide, pubescent. 



45. Acacia leucothrix Standi. Contr. U. S. Nat. Herb. 20: 185. 1919. 

 Tamaulipas and San Luis Potosi; type from San Dieguito, San Luis PotosI. 

 Shrub, copiously hirsute; leaflets few, about 3 mm. long; flowers white, the 



heads axillary, slender-pedunculate; fruit flat, thin, about 4.5 cm. long and 

 7 mm. wide, brown, glabrate. 



46. Acacia villosa (Swartz) Willd. Sp. PI. 4: 1067. 1806. 

 Mimosa villosa Swartz, Fl. Ind. Occ. 2: 982. 1800. 

 Acacia hirsuta Schlecht. Linnaea 12: 572. 1838. 



"i Acacia stipellata Schlecht. Linnaea 12: 574. 1838. 



Coahuila and Nuevo Leon to Oaxaca and Chiapas. West Indies and Central 

 America ; southern United States ; type from Jamaica. 



Erect unarmed shrub, pubescent or glabrate ; leaflets linear, 3 to 5 mm. long ; 

 flowers white; fruit flat, thin. 



47. Acacia filicioides (Cav.) Trel. Rep. Ark. Geol. Surv. 1888*: 178. 1891. 

 Mimosa filicioides Cav. Icon. PI. 1: 55. i)L 7S. 1791. 



Acacia filicina AVilld. Sp. PI. 4: 1072. 1806. 



Acacia carbonaria Schlecht. Linnaea 12: 571. 1838. 



Guerrero to Veracruz ; type from somewhere in Mexico. 



Shrub, more or less hirsute throughout ; leaflets oblong-linear, 3 to 5 mm. 

 long; flowers white; fruit flat, thin, about 5 cm. long and 1 cm. wide. 



It is possible that the name filicioides really applies to the plant here listed 

 as A. villosa, but Cavanilles's plate seems to agree better with the present 

 plant. 



