^oii ARACEAE 175 



4. ACORUS Liinnaeus 



ACORUS CALAMUS Linn. Sp. PI. (1753) 324; Miq. Fl. Ind. Bat. 3 (1856) 



175; Naves Novis. App. (1882) 287; Engl, in DC. Monog. Phan. 



2 (1879) 216, Pflanzenreich 21 (1905) 309; Merr. Fl. Manila 



(1912) 130. 



Luzon (Bontoc, Benguet), Merrill Phil. PL 1789, Vanoverbergh 2585. 



In swamps, altitude about 1,300 m, here native or thoroughly naturalized; 



cultivated here and there at low altitudes. North temperate regions 



generally. 



Local names: Acoro (Sp.) ; bueng (Pamp.) ; dalau (Ilk.); darau (Ilk.); 



dengau (Bon.); lubigan (Tag.). 



ACORUS GRAMINEUS Soland. in Ait. Hort. Kew 1 (1789) 474; Engl. 

 Pflanzenreich 21 (1905) 312; Merr. in Philip. Journ. Sci. 10 

 (1915) Bot. 288. 

 Luzon (Laguna), B. S. 14H9 Ramos. On rocks or ledges in beds of 

 small streams at low or medium altitudes. Japan to southern China. 



5. RHAPHIDOPHORAHasskarl 



RHAPHIDOPHORA ACUMINATA Merr. in Philip. Journ. Sci. 10 (1915) 

 Bot. 265. 

 Luzon (Batangas, Sorsogon), Leyte, Wenzel 1139, B. S. 23300 Ramos, 

 22669 Ramos & Deroy. In primary forests at low altitudes. Endemic. 



RHAPHIDOPHORA COPELANDIl Engl, in Bot. Jahrb. 37 (1905) 115; 

 Engl, ex Krause in Pflanzenreich 37 (1908) 49. 

 Rhaphidophora trinervia Elm. Leafl. Philip. Bot. 8 (1919) 3073. 

 Luzon (Benguet, Ifugao, Laguna), Mindanao (Davao), Copelaiid 1193, 

 Merrill 7700, Williams 2605, Elmer 18057, B. S. 19706 McGregor. In 

 forests and on ledges in thickets, altitudes 400 to 1,600 m. Endemic. 



RHAPHIDOPHORA ELMERI Engl. & Krause in Engl. Bot. Jahrb. 44 

 (1910) Beibl. 101: IL 

 Luzon (Tayabas, Sorsogon), Negros, Elmer (9286, 9268), 10135a, 15116. 

 In forests at medium altitudes. Endemic. 



RHAPHIDOPHORA GRANDIFOLIA Krause in Engl. Bot. Jahrb. 44 (1910) 

 Beibl. 101: 11. 

 Negros, Elmer 9^6^. In forests. Endemic. 

 Local name: Dakoling (C. Bis.). 



RHAPHIDOPHORA LAGUNENSIS Elm. Leafl. Philip. Bot. 8 (1919) 2072. 

 Luzon (Laguna), Elmer 17812, Pascasio. In the mossy forest, summit 

 of Mt. Maquiling, altitude about 1,100 m. Endemic. 



RHAPHIDOPHORA MERRILLII Engl. Bot. Jahrb. 37 (1905) 115; Engl. 



& Krause in Engl. Pflanzenreich 37 (1908) 51; Merr. in Philip. 



Journ. Sci. 1 (1906) Suppl. 32, 5 (1910) Bot. 335, Fl. Manila 



(1912) 129, Sp. Blancoanae (1918) 90. 



Pothos pinnata Blanco Fl. Filip. (1837) 646, ed. 2 (1845) 450, ed. 



3, 3 (1879) 48, t. 339, non Linn. 

 Epipremnum merrillii Engl. & Krause in Engl. Pflanzenreich 37 

 (1908) 137. 



