Vol. 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 Tourn. 



P. pectinatus L. Sp. PI. 127 (1753); Rob. (1), 115.— Al- 

 bemarle IsL. : Iguana Cove, Snodgrass and Heller. Widely 

 distributed. 



Ruppia L. 



R. maritima L. Sp. PI. 127 (1753) ; Rob. (1), 116.— Albe- 

 marle IsL. : Elizabeth Bay, Snodgrass and Heller. Widely 

 distributed. 



NAJADACEAE 



Najas L. 



N. marina L., var. latifolia A. Br. ex Schum. in Mart. Fl. 

 Bras. III. pt. 3, 725 (1894); Rob. (1), 116.— Albemarle 

 IsL. : 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. PI. 82 (1753). — Seymour Isl.^ 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. II. 759 (1891). 

 Tripsacum hermaphroditum L. Sp. PI. ed. 2, 1397 (1763). An- 

 thephora elegans Schreb. Beschr. Gras. II. 105 t. 44 (1810) ; 

 Rob. (1), 116. — Albemarle Isl. : Tagus Cove, occasional in 



