2 The Philippine Journal of Science i9i6 



HYDROCHARITACEAE 



THALASSIA Solander 



THALASSIA HEMPRICHII (Ehrenb.) Aschers. in Engl. & Prantl Nat. 

 Pflanzenfam. 2' (1889) 254. 



Schizotheca hemprichii Ehrenb. in Abh. Akad. Berlin 1 (1832) 429. 



Cavilli Island, Sulu Sea, Merrill 7180, September, 1910, on coral sand, 

 Bubmergfed at low tide; sterile specimens, det. C. H. Ostenfeld. Luzon. 

 Manila Bay, Merrill, August, 1911, washed up on Pasay beach. 



Not previously recorded from the Philippines; widely distributed along 

 the tropical shores of the Indian and Pacific Oceans. 



HALOPHILA Thouars 



HALOPHILA OVALIS (R. Br.) Hook. f. Fl. Tasm. 2 (1860) 45. 



Cauliniu ovalis R. Br. Prodr. (1810) 339. 



Bancoran Island, Sulu Sea, Merrill 7155, September, 1910, sterile 

 specimens growing on coral sand in shallow water, 0.4 to 1.3 m deep at 

 low tide, det. C. H. Ostenfeld. 



This species has previously been recorded from the Philippines by 

 Naves,* but the record has not before been verified. It is to be noted that 

 Halophila ovalis Hook. f. is quite distinct from //. ovata Gaudich. For 

 a consideration of the latter see Ostenfeld's paper.* 



Widely distributed along tropical shores of the Indian and Pacific 

 Oceans. 



HALOPHILA SPINULOSA (R. Br.) Aschers. in Neumayer Anleit. Wis- 

 sensch. Beob. 368, ed. 3 (1905) 396; Benth. Fl. Austral. 7 (1878) 

 183. 

 Caulinia spinulosa R. Br. Prodr. (1810) 339. 



Luzon, Province of Camarines, For. Bur. 13375 Curran, June, 1908, 

 sterile specimens thrown up by the waves, det. C. H. OstenfeW. 



This species has previously been reported from Mindanao by Aschocson, 

 1. c. ed. 3, as indicated to my by Dr. Ostenfeld. 



Eastern and northern coasts of Australia, the Philippines, and Java. 



POTAMOGETONACEAE 



CYMODOCEA Koenig 



CYMODOCEA ROTUNDATA (Ehrb. & Hempr.) Asch. & Schweinf. in 

 Sitzber. Ges. Freunde Berlin (1870) 84; Graebner in Engl. Pflan- 

 zenreich 31 (1907) 147. 

 Phucagrostis rotundata Ehrb. & Hempr. Symb. Phys. Bot. t. 11. 

 Cavilli Island, Sulu Sea, Merrill 7 180 A, September, 1910, sterile spec- 

 imens mixed with Thalassia hemprichii Aschers., det. C. H. Ostenfeld. 



This species has already been reported from Mindanao by Graebner, 

 1. c. It extends from the shores of the Red Sea southward to Madagascar 

 and eastward to Mindanao, Timor, and Australia. 



•Novis. App. (1880) 298. 



•Philip. Journ. Sci. 4 (1910) Bot. 68. 



