Voz. I] STEWART—BOTANY OF THE GALAPAGOS ISLANDS SI 
lower parts (no. 1224); northeast side, abundant on the flat 
area near the shore (no. 1222); northwest side, common in 
tufaceous soil (no. 1225). James Ist.: James Bay, Snodgrass 
and Heller; northeast side, occasional in sand and in lava crev- 
ices (no. 1226). Narsoroucu Ist.: north side, abundant in 
lava crevices (no. 1227). Srymour Ips., NorRTH and souTH: 
Snodgrass and Heller. Further distr. S. Am. This is one of 
the most abundant and wide spread grasses of the dry region. 
It occurs commonly where the soil is too porous to support 
much large vegetation, and in such situations it often covers 
considerable areas. 
A. villosa Rob. & Greenm. (1), 144, 149; Rob. (1), 117.— 
Duncan IsL.: abundant on the lower and dry parts of the 
island (nos. 1228-1229). Jervis Ist.: Baur. Endemic. 
_ Bouteloua Lag. 
B. pilosa (Hook. f.) Benth. acc. to Watson, Proc. Am. Acad. 
XVIII. 179 (1883). Eutriana pilosa Hook. f. (3), 173. B. 
pilosa Benth. 1. c.: Rob. (1), 117.—Asinepon Ist.: occa- 
sional in open places at 1050 ft. (no. 1230). ALBEMARLE IsL.: 
Iguana Cove, in spreading bunches among thick vegetation at 
250 ft. (no. 1231) ; Tagus Cove, abundant in tufaceous soil on 
the lower parts of the island (no. 1232); Villamil, occasional 
in woodland at 250 ft. (no. 1233). Barrinecron Ist.: Snod- 
grass and Heller. CHATHAM Ist.: north side, Andersson. 
INDEFATIGABLE Isxt.: north side, Snodgrass and Heller. 
James Ist.: James Bay, Snodgrass and Heller. Jervis Ist.: 
Baur. NaArsorouGH Ist.: north side, abundant on lava beds 
near the shore (no. 1234). SrEyMour Ibs., NorTH and souTH: 
Snodgrass and Heller. Endemic. 
Cenchrus L. 
C. distichophyllus Griesb. Cat. Pl. Cub. 234 (1866); Rob. 
(1), 118—A.sBemarte Isx.: Villamil, Baur. CHatHam Ist.: 
Sappho Cove, forming dense mats on sand beaches (no. 1236). 
Hoop Ist.: fairly common on sand beaches (no. 1235). Fur- 
ther distr. Cuba. 
C. granularis Anderss. (1), 140, and (2), 47; Rob. (1), 
118.—ALBEMARLE IsL.: Tagus Cove, common at 100-4000 ft. 
