2 The Philippine Journal of Science 1915 
HYDROCHARITACEAE 
THALASSIA Solander 
THALASSIA HEMPRICHII (Ehrenb.) Aschers. in Engl. & Prantl Nat. 
Pflanzenfam. 2° (1889) 254. 
Schizotheca hemprichit Ehrenb. in Abh. Akad. Berlin 1 (1832) 429. 
CAVILLI ISLAND, Sulu Sea, Merrill 7180, September, 1910, on coral sand, 
submerged 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. 
Caulinia 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 1.8 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 H. 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. 18875 Curran, June, 1908, 
sterile specimens thrown up by the waves, det. C. H. Ostenfeld. 
This species has previously been reported from Mindanao by Ascherson, 
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 7180A, September, 1910, sterile spec- 
imens mixed with Thalassia hemprichiti Aschers., det. C. H. Ostenfeld. 
This species has already been reported from Mindanao by Graebner, 
lc. 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. | 
