190 ENUMERATION OF PHILIPPINE PLANTS 1922 



LEMNACEAE 



1. SPIRODELA Schleiden 



SPIRODELA POLYRRHIZA (Linn.) Schleid. in Linnaea 13 (1839) 392; 

 Hegelm. Monogr. Lemn. (1868) 151, 156; Engl. Bot. Jahrb. 21 

 (1895) 284; Merr. Fl. Manila (1912) 134. 

 Lemna polyrrhiza Linn. Sp. PI. (1753) 970; Naves Novis. App. (1882) 

 296; Usteri Beitr. Ken. Philip. Veg. (1905) 131. 



Northern Luzon to Mindanao, F. B. 11622 Curran, Merrill 5121, AM5. 

 Floating on stagnant fresh water at low and medium altitudes. Tem- 

 perate and tropical regions of both hemispheres. 



2. LEMNA Linnaeus 



LEMNA PAUCICOSTATA Hegelm. Lemn. (1868) 294, Engl. Bot. Jahrb. 



21 (1895) 294; Usteri Beitr. Ken. Philip. Veg. (1905) 131; Merr. 



Fl. Manila (1912) 134, Sp. Blancoanae (1918) 93. 

 Lemna gibba Blanco Fl. Filip. (1837) 672, ed. 2 (1845) 468, ed. 3, 3 



(1879) 78; Naves Novis. App. (1882) 296, non Linn. 

 Lemna oligorrhiza Naves Novis. App. (1882) 296, non Kurz. 



Luzon to Mindanao, floating on stagnant fresh water at low and medium 

 altitudes, often abundant. Widely distributed in the warmer parts of 

 both hemispheres. 



Local names: Inalia (Tag.); lia (Tag.); liya (Tag.). 



LEMNA TRISULCA Linn. Sp. PL (1753) 970; Naves Novis. App. (1882) 



296; Hegelm. Lemn. (1868) 134, Engl. Bot. Jahrb. 21 (1895) 293. 



Luzon (Benguet), Mindanao (Lanao), Clemens, B. S. 8782 McGregor. 



Floating on stagnant fresh water at medium altitudes. Widely scattered 



in both hemispheres. 



EXCLUDED SPECIES 



Lemna minor Linn.; Naves Novis. App. (1882) 296. 



3. WOLFFIA Horkel 



WOLFFIA ARRH1ZA (Linn.) Wimm. Fl. Schles. (1857) 140; Hegelm. 

 Monogr. Lemn. (1868) 124, Engl. Bot. Jahrb. 21 (1895) 301; Naves 

 Novis. App. (1882) 296. 

 Lemna arrhiza Linn. Mant. 2 (1771) 294. 



Luzon (Pampanga, Bulacan, Rizal), Merrill U2UU. Floating on stagnant 

 fresh-water pools at low altitudes. Warmer parts of both hemispheres. 

 Local names: Dugman (Bis.); lia (Tag.). 



EXCLUDED SPECIES 



Wolffia delilii Schleid. ; Naves Novis. App. (1882) 296. 



Wolffia shleideni Miq. ; Naves 1. c. 



FLAGELLARIACEAE 



1. JOINVILLEA Gaudichaud 



JOINVILLEA BORNEENSIS Becc. Nelle Foreste di Borneo (1902) 198. 

 Joinvillea malayana Ridley in Journ. Str. Branch Roy. As. Soc. 44 

 (1905) 199; Merr. in Philip. Journ. Sci. 1 (1906) Suppl. 181. 



