138 
COPELAND. 
Polypodium subfalcatum Bl. 
With the preceding (No. 5972). 
India, Malaya. 
These specimens are very small, but otherwise agree perfectly with Bitime’s 
description. The most similar fern hitherto known from the Philippines is 
P. macrum, which is 'more slender, more glabrous, repand instead of toothed, 
and has the sori decidedly farther from the costa. 
Polypodium subfalcatum Bl., var. semiintegrum Copel. n. var. 
Forma nana alpina a typo pinnis plus recurvis margine basicopicia 
pinnarum integra cliversa. 
Ad arbores muscosos, 1,900 m. s. m. (No. 5971). 
This is very distinct in aspect, well marked by the margins of the pinnae, 
the usually sterile basiscopic half being entire, while the acroscopic half is 
crenulate-toothed ; but the material is too scant to warrant the description, as 
a distinct species, of a plant whose affinity is so clear and close. The longest 
fronds measure less than 10 cm. 
Polypodium erythrotrichum Copel. 
On mossy trees at 2,400 m. alt. (No. 5970). 
Already known from Mount Apo and Mount Data. Very near P. venulosum Bl. 
Polypodium obliquatum Bl. 
On ledges in the ridge forest at 450 m. alt. (No. 5969). 
In the Philippines this is the commonest fern in its group. 
India, Malaya. 
Polypodium celebicum Bl. 
On mossy trees at 1,800 m. alt. (No. 5975). 
Not hitherto known from north of Mindanao. 
Malaya. 
Polypodium decrescens Christ. 
Terrestrial, on ridges in the mossy forest at 2,200 m. alt. (No. 5974). 
Previously known only from the type locality in Celebes and from Mount 
Data, Luzon. Related to P. celebicum. 
Polypodium halconense Copel. n. sp. (PI. II, Fig. B.) 
Rhizomate ad terram repente, 15 mm. crasso, paleis griseo-fuligineis 
lanceolatis 2 mm. longis vestito ; stipitibus inter se proximis, ca. 5 cm. 
altis, rhachibnsqne pilis rectis badiis 0.5-1 mm. longis vestitis; fronde 
20 cm. alta, 45 mm. lata, ntrinqne abrupte acuminata, pinnata; pinnis 
rectis vel recurvis, decurrentibus nec nisi supremis confluentibus 25 mm. 
longis, 3.5 mm. latis, obtusis, ■£ vel § ad costam in dentes divergentes 
3 mm. inter se remotos incisis, infimis in auriculas abrupte diminutis 
eoriaceo-papyraceis, infra pallidis, ad costas apicesque dentium setiferis, 
aliter glabris ; venulis simplicibus, occultis; soris ad baseos venularum 
superficialibus pleurumque oppositis et trans costam confluentibus. 
In silvis muscosis, 2,300 m. s. m. (No. 5976). 
A relative of P. solidum as shown by the palese, color, texture and form, but 
much larger and in all respects more delicate. 
