of the Galapagos Archipelago. 229 



218. Acacia flexuosa, H. B. K. DeC. Prodr. vol. ii. p. 463. 



Hab. James Island, Dr. Scouler. West Indies and Chili. 



Leaves acute and larger than in the preceding, and peduncles longer. 



219. Acacia tortuosa, j3. glabrior. 



Hab. James Island, Charles Darwin, Esq. ^ Dr. Scouler. Guayaquil, Jamaica and West 

 Indies. 



220. Prosopis dulcis, Kunth, Mimosece, p. 110. tab. 34. DeC. Prodr. vol. ii. 



p. 447. 

 Hab. Charles Island, Charles Darwin, Esq. : eaten by the curious Lizard [Amblyorhynchus] 

 that inhabits this island. Mexico to Mendoza, West Indies, &c. 



221. Cassia picta, Don, Gardener's Diet. vol. ii. p. 444. 



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



Rhamne^. 



222. DiscARiA PAUciFLORA, Hook.Jil. ; ramis ramulisque teretibus spinescen- 

 tibus, foliis sparsis caducis oblongo-obovatis oblongisve integerrimis 

 mucronulatis breviter petiolatis, floribus sparsis solitariis binisve subses- 

 silibus quinquefidis, petalis latissime spathulatis bifidis ungue brevi, 

 ovario biloculari. 



Hab. Albemarle Island, Charles Darwin, Esq. 



Forming thickets generally near the sea. In habit resembling the other 

 species of the genus, from which it is sufficiently distinguished by the very 

 small flowers and bilobed petals. 



Ord. ? 



223. Castela Galapageia, Hook.Jil. ; ramis strictis inermibus cortice glabro 



cinereo rimoso indutis, foliis lineari-lanceolatis acutis vald^ convexis. 

 Hab. Chatham Island, Charles Darwin, Esq. 



I cannot venture to unite the present plant with the C. erecta, Turp., or 

 C Nicholsonii, Hook., one of them having spinous branches, and the other 

 terete and pubescent ones. The latter species indeed is perfectly different, 

 for the flowers are larger, and the filaments longer, narrower, and less hairy. 

 I have never seen specimens of C. erecta, 



2 H 2 



