POLY PODIACEAE 43 
more than one species, or on detached fronds of Hemigramma. 
Hemigramma latifolia Copel. is widely distributed in the Phil- 
ippines at low and medium altitudes. 
- Tilustrative specimens from Antipolo, Rizal Province, Luzon, 
November, 1914 (Merrill: Species Blancoanae No. 628); Mon- 
talban, Rizal Province, Luzon, February, 1916 (Merrill: Species 
Blancoanae No. 984). 
OLEANDRA Cavanilles 
Blechnum colubrinum Blanco FI. Filip. (1837) 834 (sp. nov.) ; ed. 2 (1845) 
576; ed. 3, 3 (1879) 252=0. NERIIFORMIS Cav. (Oleandra colubrina 
Copel.). 
I fail to see how this species can be distinguished from Olean- 
dra nertiformis Cav., the type of which was from “la insula de 
Mauban”, i. e., Mauban, Tayabas Province, Luzon. It is widely 
distributed in the Philippines occurring on most mountains above 
an altitude of 800 meters. 
Illustrative specimen from Mount Maquiling, Laguna Province, 
Luzon, March, 1914 (Merrill: Species Blancoanae No. 490). 
NEPHROLEPIS Schott 
Pteris signata Blanco Fl. Filip. (1837) 830 (sp. nov.) =Polypodium 
signatum Blanco op. cit. ed. 2 (1845) 572 (comb. nov.) ; ed. 3, 3 (1879) 
248—NEPHROLEPIS BISERRATA (Sw.) Schott. 
Polypodium serratum Blanco FI. Filip. (1837) 827; ed. 2 (1845) 572; ed. 3, 
3 (1879) 243, non Willd. nec Aubl.=NEPHROLEPIS BISERRATA 
(Sw.) Schott. 
Blanco’s Pteris signata—Polypodium signatum is very im- 
perfectly described, and the species has been considered a very 
doubtful one. Fernandez-Villar reduced it to Polypodium albido- 
squamatum Blume, which is a species of the mossy forests, while 
Blanco definitely states that his specimens were from Manda- 
loyan, near Manila, a region where Polypodium albido-squamatum 
does not and cannot grow. Blanco’s description, so far as it 
goes, applies perfectly to Nephrolepis biserrata Schott which is 
abundant about Manila, many specimens of which present the | 
white dots on the upper surface mentioned by him. Blanco’s 
Polypodium serratum is certainly the same species, a form with- 
out the manifest white dots on the upper surface. 
Illustrative specimen from Mandaloyon, Rizal Province, Luzon, 
Oetaber, 1914 (Merrill: Species Blancoanae No. 153). 
ATHYRIUM Roth 
Hemionitis incisa Blanco Fl. Filip. (1837) 829 fen: nov.) ; ed. 2 (1845) 
574; ed. 3, 3 (1879) 246—ATHYRIUM ESCULENTUM (Retz.) Copel. 
(Diplazinm esculentum Sw., Callipteris esculenta J. Sm.). 
