Voz. 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.—NarsporouGcH Isu.: Snod- 
grass and Heller. Endemic. 
POLYGONACEAE 
Polygonum L. 
P. acre HBK. Nov. Gen. & Sp. IT. 179 (1817).—CuatHam 
Ist.: Wreck Bay, common in pools of water at 1000 ft. (no. 
1121) yy Burther distr: (U.S. Mex., W. Ind. S. Am, 
P. acuminatum HBK. Nov. Gen. & Sp. IT. 178 (1817) ; Rob. 
(1), 134.—Gatapacos Ibs.: 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 Isxt.: Villamil, occasional above 2500 ft. CHATHAM 
Ist.: 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-—WeEnman Isi.: Snodgrass and 
Heller. 
Salicornia L. 
S. sp. (?).—JAmes Ist.: northeast side, a plant resembling 
a Salicornia in habit and inflorescence was seen growing on 
the shores of salt lagoons. No specimens were secured. 
