Vo1 - 2 POLYGONACEAE 121 



Rafflesia cumingii R. Br. in Trans. Linn. Soc. 19 (1845) 243; Hook. 

 f. in DC. Prodr. 17 (1873) 112; .F.-Vill. Novis. App. (1880) 174; 

 Miq. PL Ind. Bat. 1 2 (1858-59) 684. 

 Luzon (Kalinga, Laguna), Samar, Leyte, B. S. 25353 Yates, Elmer 

 17895, Merrill Sp. Blancoanae 535. Parasitic on roots of Cissus in for- 

 ests at medium altitudes; very local. Endemic. 



RAFFLESIA SCHADENBERGIANA Goppert ex Hieron. in Gartenfiora 

 34 (1885) 3, *. 1177; Solms in Ann. Jard. Bot. Buitenz. 9 (1891) 

 239, t. 26, /. 1-6, 17, Engl. Pflanzenreich 5(1901) 9; Koord. Bot. 

 Overzicht Raffl. Nederl.-Ind. (1918) 81. 



Mindanao (Davao),, Schadenberg & Koch. On roots of Cissus in for- 

 ests, altitude about 800 m. Endemic. 

 Local name: B6-o (Bag.). 



EXCLUDED SPECIES 



Rafflesia patma Blume; F.-Vill. Novis. App. (1880) 174. 

 Brugmansia zippellii Blume ; F.-Vill. 1. c. 



POLYGONACEAE 



1. RUM EX Linnaeus 



RUM EX ACETOSELLA Linn. Sp. PI. (1753) 538; F.-Vill. Novis. App. 

 (1880) 173. 

 Luzon (Benguet). Introduced and thoroughly naturalized at Pauai, 

 altitude about 2,400 m; it is very doubtful if F.-Villar saw actual 

 Philippine specimens. A temperate country weed, native of Europe. 



RUM EX CRISPUS Linn. Sp. PI. (1753) 335. 



Luzon (Benguet), Merrill Jf295, B. S. 32017 Santos, 3527 Mearns. A 

 native of Europe, now a widely distributed weed in temperate countries; 

 in Benguet a recent introduction, but sparingly naturalized, altitude 1,400 

 to 2,200 m. 



DOUBTFUL AND EXCLUDED SPECIES 



Rumex chinensis Champ.; F.-Vill. Novis. App. (1880) 173. 



Rheum muricatum Blanco Fl. Filip. (1837) 327 = Rumex muricatus Blanco 

 op. cit. ed. 2 (1845) 195, ed. 3, 1 (1877) 346; Merr. Sp. Blancoanae 

 (1918) 136. 

 This was described by Blanco from cultivated specimens, and was re- 

 duced by F.-Villar, Novis. App. (1880) 173, to Rumex maritimus Linn, 

 which is probably the correct disposition of it. The species, however, 

 apparently no longer occurs in the Philippines, cultivated or otherwise. 



2. POLYGONUM Tournefort 



POLYGONUM APOENSE Elm. Lead. Philip. Bot. 8 (1915) 2796. 



Mindanao (Davao, Lanao), Elmer 107 5U, F. B. 25230 Alvarez. In open 

 glens in dense forests, altitude 1,000 to 2,000 m; an ally of Polygonum 

 virginianum Linn. Endemic. 



Local name: Karikut (Bag.). 



