Vor. I] STEWART—BOTANY OF THE GALAPAGOS ISLANDS 45 
LEMNACEAE 
Lemna L. 
L. minor L. Sp. Pl. 970 (1753).—ALBEMARLE IsL.: Villa- 
mil, common in pools of slightly brackish water near sea level 
(no. 1100). CHatHAm Ist.: Wreck Bay, abundant on the 
surface of pools and streams, 1000-1800 ft., (no. 1101). 
Widely distributed. 
L. sp., Wolf (1), 284.—Cuartes Ist. 
BROMELIACEAE 
Tillandsia L. 
T. insularis Mez in DC. Monog. IX. 756 (1896) ; Rob. (1), 
130.—ALBEMARLE IsL.: Tagus Cove, rare above 2500 ft. on 
the west side of the mountain; on the southeast side it often 
covers the ground in great profusion over considerable areas ; 
Villamil, common on the branches of trees and on the ground 
in vegetable mold, 350-1300 ft. CHaARLEs IsL.: common on 
bushes, on small trees, among rocks in vegetable mold at 1400 
ft. CHatHAm Ist.: Wreck Bay, among rocks in vegetable 
mold, and covering the branches of Hippomane Mancinella 
trees around 700 ft. Duncan Ist.: on rocks and in vegetable 
mold, 1150-1250 ft. INDEFATIGABLE IsL.: Academy Bay, on 
the branches of trees and in vegetable mold, 350-550 ft., (no. 
1119) ; northwest side, occasional at 550 ft., abundant in the 
region around 700 ft., where it often forms large patches on 
the ground in places where the vegetation is not too dense for 
its growth. JAMmEs IsL.: James Bay, occasional on the sides of 
the bluffs, 1300-1500 ft. NArBorouGH Ist.: south side, upper 
regions acc. to R. H. Beck. This is the only tank epiphyte 
found on the islands. Specimens often contain as much as a 
pint of water, from which they seem to obtain their entire sup- 
ply of moisture during dry weather. The root system is so 
poorly developed that a slight push will uproot a specimen 
when found growing on the ground. Endemic. 
COMMELINACEAE 
Commelina Plum. 
C. nudiflora L. Sp. Pl. 41 (1753); Rob. (1), 130.—Asrinc- 
DON IsL.: common in the upper regions (no. 1122). ALBE- 
