An Enumeration of the Plants collected by Dr. H, H. Rusby in South 



America, 1885-1886, XXXI. 





By H. H. Rusby 



(Continued from Bull. Torr. Club, 27 : 137. 24 Mr. 1900. ) 



Euphorbia pilulifera L. PL Sp. 454. Yungas, 4000 ft., 1885 

 (no. 1945). Also seen at Guanai, where the Indians are said to 

 use it as an instillation to diseased eyes. 



Euphorbia thymifolia L. Sp. PI. 454. Falls of Madeira, Brazil, 

 Oct. 1886 (no. 894). 



Euphorbia cymbiformis Rusby, Mem. Torn Club, 4: 255. 



Yungas, 4000 ft., 1885 (no. 895). 



Pliyllanthus orbicularis L. C. Rich. Act. Soc. Hist. Nat. Par. 

 113. 1792. Falls of Madeira, Brazil, Oct. 1886^0.903). 



Hevea Sprnceana Muell. Arg. Linnaea, 34 : 204? 1865-66. 

 June, of Rivers Beni and Madre de Dios, Aug. 1886 (no. 885) 

 The principal rubber-yielding tree of the Beni district. 



< Jatropha Curcas L. Sp. PL 006. Reis, 1500 ft., June, 1886 

 (no. 889). The plant is used to form hedges and the seeds are 

 used as a purge, under the name " Pinon." 



Croton cJiamaedryfolius Griseb. Fl. Brit. W. Ind. 41. Mapiri, 

 5000 ft., Apr. 1886 (no. 901), and Falls of Madeira, Brazil, Oct. 

 1886 (no. 902). The same as Holton's no. 849. 



Croton mi cans argyrophyllns Linnaea, 34 : 96. 1865-66. 

 Unduavi, 8000 ft, Oct. 1885 (no. 2623). 



Croton Rnsbyi Britton, Mem. Torr. Club, 6: 119. Mapiri, 

 2500 ft., May 1886 (no. 1224). No. 1223 is probably the same ; 



my specimen is very poor. 



Croton Spruceanus Benth. in Hook. Kew. Journ. 6 : 375. 



1854. Falls of Madeira, Brazil, Oct. 1886 (no. 2622). A small 



tree of some 15 ft., growing on the bank of a stream. 



Croton Urncurana Baill. Adansonia, 4:335. 1 863-64. Mapiri, 



2500 ft., May 1886 (no. 1197). Yungas, 4000 ft., 1885 (no. 



1236b), and Unduavi, 8000 ft., Oct. -1885 (no. 900). 



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