Vol. I] STEWART— BOTANY OF THE GALAPAGOS ISLANDS 53 



varies greatly in size at different elevations. Specimens from 

 the moist region are usually much larger than those found in 

 the dry and transition regions. Endemic. 



P. uncinatum Rob. (1), 134.— Narborough Isl. : Snod- 

 grass and Heller. Endemic. 



POLYGONACEAE 



Polygonum L. 



P. acre HBK. Nov. Gen. & Sp. II. 179 (1817).— Chatham 

 Isl. : Wreck Bay, common in pools of water at 1000 ft. (no. 

 1121). Further distr. U. S., Mex., W. Ind., S. Am. 



P. acuminatum HBK. Nov. Gen. & Sp. II. 178 (1817) ; Rob. 

 (1), 134. — Galapagos Ids.: according to Griesb. Fl. W. Ind. 

 161. It is probable that the next species has been mistaken for 

 this one, as the two resemble each other rather closely. Further 

 distr. Mex., W. Ind., S. Am. 



P. galapagense Caruel (1), 624; Rob. (1), 134.— Albe- 

 marle Isl. : Villamil, occasional above 2500 ft. Chatham 

 Isl. : Wreck Bay, common in large bunches 2-4 ft. high in the 

 open grassy country above 1700 ft. (no. 1120). Endemic. 



CHENOPODIACEAE 



Atriplex L. 



A. sp. Rob. (1), 134. — Indefatigable Isl. : north side, low 

 shrubs on sand beaches (no. 1346). Seymour Isl., north: 

 Snodgrass and Heller. All of the specimens are sterile and in- 

 determinate as to species. 



A. sp. Rob. (1), 134. — Wenman Isl.: Snodgrass and 

 Heller. 



Salicornia L. 



S. sp. ( ?). — James Isl. : northeast side, a plant resembling 

 a Salicornia in habit and inflorescence was seen growing on 

 the shores of salt lagoons. No specimens were secured. 



