136 
COPELAND. 
ACROSORUS Copel. 
Acrosorus M err i 1 1 i Copel. n. sp. 
Rhizomata ut in A. exaltatoj frondibus 20-30 cm. longis, ca. 6 mm. 
latis vix ad costam glabram pinnatis, deorsum ad alam nndulatam re- 
ductis, sessilibus, confertissimis, coriaceis, infra minute nigro-punctulatis ; 
segmentis sterilibus obtuse inaequilateraliter triangularibus ; fertilibus 
tortis, lamina reducta. 
Mindoro, ad montem Halcon, ab arboribus permuscosis pendens, 1,300 m. s. 
m. (No. 6002). 
This species has its nearest affinity in its geographically nearest relative, 
A. cxaltatus of Mount Apo, from which it differs in being distinctly smaller 
and more slender, with narrower sterile segments and more reduced and twisted 
fertile segments, giving the fertile apical part of the frond an appearance of 
distinctness wanting in A. exaltatus. In this respect it approaches A. Reineckei 
(Christ), of Samoa. 
PROSAPTIA Presl. 
Prosaptia contigua (Forst.) Presl. 
Epiphytic on mossy trees at 1,800 m. alt. (No. 5998). The typical form 
and the variety m onosora are about equally abundant. 
Malaya to Polynesia. 
Prosaptia polymorpha Copel. n. sp. 
Species P. alatae affinis, nee non ilia segmentis latioribus minus trun- 
catis, soribusque in dentes obtusis immersis nec ad apices segmentorum 
restrictis, diversa ; frondibus usque ad 40 cm. longis, 3 cm. latis, acumi- 
natis, subcoriaceis ; segmentis oblongis, obtusis vel subacutis, deorsum 
sensim in undulas alae 5-8 cm. longae, denrum integrae, in stipitem 
brevem attenuatae elatis ; soris in segmento quoque ca. 5. 
Apud fluminem Alag ad arbores saxaque epiphytica, 150 m. s. m. (No. 5997). 
This material, although for the most part uniform in essentials, shows a 
few wide variations, one frond being in its upper half like P. contigua monosora, 
and a few so like P. alata that if they had been alone, they could have been 
referred to that species. P. polymorpha impresses me as being between P. alata 
and P. Toppingi, differing from the latter in the narrower, sharper sinuses, more 
rounded segments and less coriaceous texture. 
POLY PODIUM Linn. 
Polypodium jagorianum Mett. 
Epiphytic on exposed ridges at 1,400 m. alt. (No. 5966). 
The known range of this species is from Mount Mariveles, Luzon, to Mount 
Silay, Negros, always in the same habitat. 
Polypodium setosum Bl., var. calvum Copel. n. var. 
Costa margineque superficieque pilis sparsissimis vestitis; aliter typi- 
cale. 
Ad arbores moscosos, 2,400 m. s. m. (No. 5965). 
This fern agrees with Blume’s description and with specimens that I believe 
to be correctly determined, in texture, form, sori and pubescence of the stipe. 
