534 CONTEIBUTIONS FROM THE NATIONAL. HERBARIUM. 



7. Zantlioxylum purpusii T, S. Brancleg. Univ. Calif. Publ. Bot. 3: 383. 1909. 

 Known only Irom the type locality, San Luis Tultitlanapa, Puebla. 



Densely branched, spiny shrub, 1 to 2 meters high ; leaflets 5 or 7, 5 to 15 mm. 

 long, crenulate. 



8. Zanthoxylum insulare Rose, U. S. Dept. Agr. N. Amer. Fauna 14: 79. 1899. 

 Tres Marias and Socorro islands ; type from Maria Madre Island. Jamaica ; 



northern South America. 



Glabrous shrub or tree, 4 to 18 meters high, the trunk grayish, armed with 

 corky spines 1.5 to 3 cm. long; branches usually unarmed; leaflets 1.5 to 7 cm. 

 long, coarsely crenate. 



9. Zanthoxylum culantrillo H. B. K. Nov. Gen. & Sp. 6: 2. 1823. 

 Morelos. Guatemala to Peru ; type from Peru. 



Shrub or small tree, pubescent ; leaf rachis winged, the leaflets 0.7 to 3.5 cm, 

 long, crenate or nearly entire; flowers yellowish green. 



10. Zanthoxylum limoncello Planch. & Oerst. ; Triana Si Planch. Ann. Sci. 

 Nat. Y. 14: 312. 1872. 



Zanthoxylum foetidum Rose, Contr. U. S. Nat. Herb. 5: 112. 1897. 



Morelos. Central America ; type from Volcfin de Chiriqui, Panama. 



Shrub or small tree, 2 to 6 meters high, armed with stout prickles ; leaf rachis 

 not winged, the leaflets 2 to 7.5 cm. long, neai'ly glabrous ; flowers greenish, 

 with unpleasant odor. " Limoncillo," " zorrillo " (Costa Rica). 



11. Zanthoxylum caribaeum Lam. Encycl. 2: 39. 1786. 

 Zanthoxylum accident ale Rose. Contr. U. S. Nat. Herb. 5: 164. 1899. 

 Sinaloa and Tepic. West Indies and northern South America ; type from 



Barbados. 



Tree, 5 to 20 meters high, the trunk spiny ; leaf rachis terete, the leaflets 7 to 

 13, 4.5 to 12 cm. long, glabrate, crenate. " Zorrillo " (Sinaloa) ; " espino rubial " 

 (Porto Rico). 



In the West Indies the bitter bark has been used for fevers and venereal dis- 

 eases. The wood is said to be very durable. 



12. Zanthoxylum nelsoni Ro.se, U. S. Dept. Agr. N. Anier. Fauna 14: 79. 1899. 

 Known only from the type locality, Max'Ia Madre Island, Tepic. 



Glabrous tree, 7.5 to 20 meters high ; leaf rachis terete, the leaflets 11 to 15, 

 4.5 to 10 cm. long, crenulate, conspicuously gland-dotted. 



13. Zanthoxylum elephantiasis Macfad. Fl. Jam. 1: 193. 1837. 



Veracruz and perhaps elsewhere. Costa Rica and Panama ; West Indies ; 

 type from Jamaica. 



Tree, 5 to 18 meters high, the trunk sometimes 50 cm. in diameter ; bark 

 grayish, covered with large corky sharp-pointed cushions ; branches prickly ; 

 leaf rachis terete, often prickly, the leaflets 5 to 17, 3.5 to 10.5 cm. long ; flowers 

 greenish yellow; sapwood thick, light brown, or nearly white, the heartwood 

 darker, tinged with yellow, hard, light, fine-grained, taking a good polish, 

 durable in the ground. " Ruda " (Panama) ; " pino macho" (Santo Domingo). 



14. Zanthoxylum bijugum (Engl.) P. Wilson, Bull. Torrey Club 37: 86. 1910. 

 Fagara bijuya Engl. Bot. Jahrb. Engler 21: Beibl. 54: 23. 1896. 



Known only from the type locality, Tlacolula, Oaxaca. 

 Pubescent tree ; leaflets 5, coriaceous, 2.5 to 6 cm. long. 



15. Zanthoxylum melanostictum Schlecht. & Cham. Linnaea 5: 231. 1830. 

 Wagara crassifolia Engl. Bot. Jahrb. Engler 21: Beibl. 54: 21. 1896. 

 Veracruz and probably elsewhere. 



Shrub or tree, unarmed or prickly; leaflets 3 to 7, coriaceous, 6 to 15 cm. 

 long, entire or crenulate. 



