Vor. I] STEWART—BOTANY OF THE GALAPAGOS ISLANDS 29 
common on the branches of Zanthoxylum Fagara trees at 2150 
ft. (nos. 1023-1024). Further distr. Mex., W. Ind., northern 
S. Am. 
SPERMATOPHYTA 
MONOCOTYLEDONEAE 
POTAMOGETONACEAE 
Potamogeton Journ. 
P. pectinatus L. Sp. Pl. 127 (1753); Rob. (1), 115.—AL- 
BEMARLE Ist.: Iguana Cove, Snodgrass and Heller. Widely 
distributed. 
Ruppia L. 
R. maritima L. Sp. Pl. 127 (1753) ; Rob. (1), 116.—ALBE- 
MARLE Isu.: Elizabeth Bay, Snodgrass and Heller. Widely 
distributed. 
NAJADACEAE 
Najas L. 
N. marina L., var. latifolia A. Br. ex Schum. in Mart. FI. 
Bras: (le piysy 72> (1894); Rob: (1), 116—ALBEMARLE 
Ist.: Iguana Cove, Snodgrass and Heller. Further distr. 
tropical S. Am. 
GRAMINEAE 
Ammophila Host. 
A, arenaria (L.) Link, Hort. Berol. I. 105 (1827). Arundo 
arenaria L. Sp. Pl. 82 (1753).—Srymour Ist., soUTH: form- 
ing a patch about one-fourth mile long on a sand beach on the 
west side of the island. The specimen is sterile and somewhat 
doubtful as to species, (no. 1195). Further distr. N. Am., 
Europe. 
Anthephora Schreb. 
A. hermaphrodita (L.) O. Kze. Rev. Gen. iy 7595 (1894): 
Tripsacum hermaphroditum L. Sp. PI. ed: 2, 1397 (1763)?"4n- 
thephora elegans Schreb. Beschr. Gras. II. 105 t. 44 (1810); 
Rob. (1), 116.—ALsBemar_e Ist.: Tagus Cove, occasional in 
