Vol. 2 



POLYGONACEAE 123 



Luzon, (Benguet), B. S. 31811 Santos, 14127 Robinson, Merrill 4428, 

 Phil. PI. 7Jf.lt, 1712, Williams 998 bis. In open wet places, along streams, 

 in old rice paddies, etc., altitude 1,200 to 2,000 m. Warmer parts of the 

 world. 



Local names: Agagat (Bon.); buding (Ig 1 .) ; tuba (Bon.). 



POLYGONUM LANIGERUM R. Br. Prodr. (1810) 419; Meisn. in DC. 



Prodr. 14 (1857) 117 (var. indica Meisn.); F.-Vill. Novis. App. 



(1880) 172; Vidal Phan. Cuming. Philip. (1885) 137, Rev. PI. Vase. 



Filip. (1886) 217. 



Luzon (Cagayan, Ilocos Norte, Ifugao), Cuming 1377, B. S. 7902 Ramos, 



2262 M earns, Tbppijng 875. In open wet lands, near streams, etc., at low 



and medium altitudes. India to Africa, China, and Formosa, southward 



to Australia. 



POLYGONUM MEARNSII Elm. Lean. Philip. Bot. 1 (1908) 289. 



Luzon (Benguet), Elmer 8357, Williams 1355. In thickets, damp for- 

 ests, altitude about 2,200 m. An endemic species of which the fruits are 

 unknown; it is apparently very closely allied to Polygonum posumbu Ham. 

 but has very narrow leaves. 



POLYGONUM MINUS Huds. Fl. Angl. (1762) 148; Meisn. in DC. Prodr. 



14 1 (1856) 111; Gage ex King & Gamble in Journ. As. Soc. Beng. 



75 * (1912) 19. 

 Luzon (Bontoc, Benguet), Merrill 9679, Phil. PI. 745, Vanoverbergh 80, 

 2206, B. S. 6000 Ramos, 14.121 Robinson. In open wet places, altitude 1,200 

 to 1,500 m. Europe, temperate and tropical Asia southward to Australia; 

 introduced in North America. 



POLYGONUM ORIENTALE Linn. Sp. PI. (1753) 343; Meisn. in DC. 

 Prodr. 14 (1857) 123. 



Luzon (Pampanga, Rizal), Mindanao (Lanao, Bukidnon), B. S. 26100 

 Fertix, Merrill Phil. PI. 310, Parker 49. In open wet places along streams 

 at low and medium altitudes. India to Japan southward to Australia. 



POLYGONUM PEDUNCULARE Wall. Cat. (1829) No. 1718, nomen nudum; 

 Meisn. in DC. Prodr. 14 (1857) 133; Gage ex King & Gamble in 

 Journ. As. Soc. Beng. 75 1 (1912) 23. 

 Polygonum strigosum F.-Vill. Novis. App. (1880) 172; Vidal Phan. 

 Cuming. Philip. (1885) 137, Rev. PI. Vase. Filip. (1886) 217, 

 non R. Br. 



Luzon (Benguet, Laguna), Mindoro, Mindanao, Cuming 484, Elmer 7729, 

 18313, McGregor 173, Clemens 196, B. S. 24997. In open wet lands, swamps, 

 etc., at low and medium altitudes, in Benguet ascending to 1,400 m. India 

 to China southward to Australia. 



POLYGONUM PERFOLIATUM Linn. Syst. ed. 10 (1759) 1005; Meisn. in 

 DC. Prodr. 14 (1857) 132; Rolfe in Journ. Bot. 23 (1885) 215; 

 Vidal Rev. PI. Vase. Filip. (1886) 217; Ceron Cat. PI. Herb. 

 Manila (1892) 138. 



Luzon (Lepanto, Bontoc, Benguet), Mindanao (Bukidnon), Elmer 5793, 

 Merrill Phil. PI. 747, B. S. 5897 Ramos, 39020 Ramos & Edaiio. Sprawling 



