of the Galapagos Archipelago. 231 



Wholly distinct from any known congener, though allied to a Guayaquil 



species, S. purpurea, L, 



Xanthoxyle^. 



226. Xanthoxylum pterota, H. B. K. DeC. Prodr. vol. i. p. 725. 

 Hab. James Island, Charles Darwin, Esq. West India Islands. 



The specimens are in bud only and very imperfect ; unarmed, as are some 

 of X. pterota in Hook. Herb. 



Zygophylle^. 



227. Tribulus cistoides, L. DeC. Prodr. vol. i. p. 703. 



Hab. Albemarle and James Islands, Charles Darwin, Esq. ^ Mr. Macrae. Tropical 

 America. 



No fruit, and therefore incapable of satisfactory determination. 



Sapindace^, 



228. Cardiospermum molle, H. B. K. DeC. Prodr. vol. i. p. 601. 

 Hab. Chatham Island, Charles Darwin, Esq. Tropical America. 



Byttneriace^. 



229. Waltheria reticulata, Hooh. Jil. ; ramulis divaricatis pubescentibus, 

 foliis cordato-ovatis acntis infra praecipu^ reticulatim venosis margini- 

 bus crenato-dentatis crispatis utrinque appresse velutinis toraentosis, 

 floribus in axillis foliorum 3-5 subfasciculatis breviter pedicellatis, calyce 

 oblongo obtuse 5-dentato, petalis spathulatis calyce \ longioribus. 



Hab. Chatham, James and Albemarle Islands, Charles Darwin, Esq., Mr. Macrae ^ 



Mr. Douglas. 

 Rami cortice fusco tecti, crassitie pennae anatinae. Petioli 4-5 lin. longi. Folia |-1 unc. 



longa, interdum lineari-oblonga, semper venis subtus prominulis reticulata. Flores 



parvi. Calyx 2 lin. longus. Habitus Melochice tomentosce, L. 



Malvace^. 



230. Malachra capitata, L. DeC. Prodr. vol. i. p. 440. 



Hab. James Island, Charles Darwin, Esq. Very common in the West Indies. 



23 1 . GossYPiuM purpurascens, Poir. (an G. Barbadense, Willd. ?) 

 Hab. Chatham and James Islands, Charles Darwin, Esq. 



