VoL 3 RUBIACEAE 537 



Plectronia umbellata K. Schum. in Engl. & Prantl Nat. Pflanzen- 



fam. 4 4 (1891) 92; Merr. in Philip. Journ. Sci. 1 (1906) Suppl. 



131, non Baker. 

 Canthium cumingii Vidal Phan. Cuming. Philip. (1885) 182, Rev. 



PL Vase. Filip. (1886) 156. 

 Plectronia cumingii Elm. Leafl. Philip. Bot. 1 (1906) 28. 

 Plectronia moluccana Merr. in Philip. Bureau Forestry Bull. 1 (1903) 



54, non Canthium moluccanum Roxb. 



Northern Luzon (Cagayan) to Palawan and Mindanao, in most or 

 all islands and provinces. Chiefly in secondary forests at low and me- 

 dium altitudes, ascending to 1,500 m. Endemic. 



Local names: Agilalatum (Ibn.) ; basar-basar (Ilk.) ; batohan (P. Bis.) ; 

 bukog-manok (Mbo.) ; butig-babau (Tag.); damul-damul (P. Bis.); ka- 

 sayrai (Sbl.) ; maguntopi (Bag.); malakape (Tag.); marakulilim (Ilk.); 

 potot (Ig.) ; topas (Bag.); tubo-bato (Tagb.). 



PLECTRONIA HORRIDA (Blume) Benth. & Hook. f. ex Kurz in Journ. 

 As. Soc. Beng. 46 2 (1877) 153; Merr. in Philip. Bureau Forestry 

 Bull. 1 (1903) 54, PI. Manila (1912) 454, Sp. Blancoanae (1918) 

 365; Elm. Leafl. Philip. Bot. 1 (1906) 28. 



Canthium horridum Blume Bijdr. (1826) 966; DC. Prodr. 4 (1830) 

 474; Blanco Fl. Filip. ed. 2 (1845) 116, ed. 3, 1 (1877) 208, 

 t. 57; Miq. FL Ind. Bat. 2 (1857) 255; Vidal Sinopsis Atlas (1883) 

 29, t. 57, f. I, Rev. PL Vase. Filip. (1886) 155. 



Canthium pauciflorum Blanco Fl. Filip. (1837) 165. 



Canthium hebecladum DC. Prodr. 4 (1830) 474; Miq. Fl. Ind. Bat. 2 

 (1857) 256; F.-Vill. Novis. App. (1880) 110. 



Canthium parviflorum Bartl. ex DC. 1. c. in syn., non Lam. 



Luzon (Pangasinan, Zambales, Bulacan, Rizal, Camarines, Sorsogon), 

 F. B. 17842 Otanes, 6129 Robinson & Merritt, 6761 Robinson, Ahem 254, 

 819, Merrill 2999, 2856, 2719, Sp. Blancoanae US, Phil. PI. 732, Elmer 

 174-01, 17435. In dry thickets at low altitudes. Burma to Malaya. 



Local names: Anonot-ti-babui (Pang.); barsik (Ilk.); dayap-dayap 

 (Bik.) ; kuliak-daga (Tag.); mimisam (Ilk.); suliak-daga (Tag.). 



PLECTRONIA LEYTENSIS Merr. in Philip. Journ. Sci. 8 (1913) Bot. 49. 



Luzon . (Tayabas, east coast), Leyte, B. S. 15383 Ramos, 20892 Escritor. 

 In primary forests, probably at about 1,000 m altitude. Endemic. 



PLECTRONIA MABESAE Elm. Leafl. Philip. Bot. 8 (1919) 3099. 



Luzon (Ilocos Norte, Rizal, Bataan, Laguna, Batangas), Panay, Elmer 

 17427, Whitford 1263, F. B. 26175 Mabesa, 3036 Borden, B. S. 22344, 

 32840 Ramos, 32422 McGregor. In thickets and secondary forests at low 

 altitudes. Endemic. 



PLECTRONIA MEGACARPA Merr. in Philip. Journ. Sci. 4 (1909) Bot. 326; 

 Elm. Leafl. Philip. Bot. 3 (1911) 1008. 



Luzon (Cagayan, Benguet, Zambales, Tayabas), F. B. 8232 Curran & 

 Merritt, 21775 Barros, 23006 Aguilar, B. S. 22043 Ramos. In forests at 

 low altitudes. Endemic. 



Local name: Puni (Ibn.). 



