Vor. IJ STEWART—BOTANY OF THE GALAPAGOS ISLANDS 25 
P. pleiosoros Hook. f. (3), 166 (as pleiosorum) ; Rob. (1), 
113.—James Ist.: Darwin. Endemic. 
P. polypodioides (L.) Hitchcock, Rep. Mo. Bot. Gard. IV. 
156 (1893). Acrostichum polypodioides L. Sp. Pl. 1068 
(1753). Pincanum. Sw. Prod. 131 (1788); Rob. (C1), 112: 
—ALBEMARLE IsL.: Villamil, common on the trunks of trees 
at 600 ft. (no. 944). Cuartves IsLt.: Darwin. INDEFATIGA- 
BLE Ist.: Academy Bay, on the trunks and branches of trees 
above 425 ft. (no. 942); southeast side, common on tree 
trunks at 625 ft. (no. 943). Widely distributed. 
P. squamatum L. Sp. Pl. 1086 (1753); Rob. (1), 113.— 
ABINGDON IsL.: common on rocks at 450 ft., occasional on 
the trunks and branches of trees on the upper parts of the 
island, (no. 978). ALBEMARLE IsL.: Iguana Cove, Snodgrass 
and Heller; Tagus Cove, common in lava crevices at 2800 ft. 
(no. 986); Villamil, common on recent lava near the shore 
and in woodland above 350 ft. BINpLoe IsL.: common on 
lava in the upper interior parts of the island (no. 971). 
CHARLES IsL.: occasional in open woodland at 1000 ft., 
abundant at 1400 ft., (no. 972). CuHatTHAm IsL.: Basso 
Point, first seen at 900 ft.; Wreck Bay, abundant in shady 
woodland at 600 ft., fairly common in open country at 1700 
ft., occasional at 2100 ft., (nos. 973-974). Duncan ISL.: 
occurs first at 1000 ft. on the north side of the island, and at 
700 ft. on the south side where the vegetation is bathed by 
the fog-laden wind, common at 1300 ft. on the south side, 
(no. 975). Hoop Ist.: occasional on the southeast side of 
cliffs at 600 ft. (no. 979). INDEFATIGABLE IsL.: Academy 
Bay, occasional at 50 ft., abundant, covering rocks in open 
woodland, at 350-500 ft., (no. 985); northwest side, occa- 
sional at 650 ft.; southeast side, occasional at 600 ft., forming 
low brakes around 700 ft., (no. 987). James Ist.: James 
Bay, abundant on recent lava beds above 500 ft., apparently 
one of the first vascular plants to invade the recent lava above 
this elevation, (no. 977). Jervis IsL.: occasional in a very 
limited area around 1050 ft. (no. 984). NaArporoucH IsL.: 
south side, common in the upper regions. Further distr. Mex., 
W. Ind., northern S. Am. 
