292 
COPELAND. 
and Benguet are the teeth cleft at the apex, and the wing, decurrent from the 
lowest acroscopic pinnule, which occupies the angle between the main rachis and 
that of a pinna. 
Benguet, Elmer 6548, Copeland 1948, Bur. Sci. 4184 M earns; Mount Data, 
Copeland' 1811. 
13. Athyrium Elmeri Copel. sp. nova. 
Affine A. opaco (Don) Copel., quo stipite sub vi ride, rhacliidibus viri- 
dibus, fronde nmlto minore, graciliore, pinnulis obtusis, segmentis in- 
tegris, sinubus apertis differt. 
Rhizomate subereeto radices rigidas griseo-atras emittente, paleis fuseis 
lanceolatis coronato : stipite ca. 20 cm alto ; apud basin paleaceo ; fronde 
30-40 cm alta, 15-20 cm lata, tripinnatifida, membranacea, glabra, 
pinnis acuminatis, infimis sequentibus aequalibus vel paullo diminutis; 
pinnulis infhnis brevistipitatis, sequentibus anguste adnatis, majoribus 
ultra mediam laminam incisis, apices versus fere integris; soris brevibus, 
irregularibus, prope costam pinnulae ; indusio nullo. 
On mossy waterworn rocks in ravines, Horn of Negros Mountain, altitude 
1,200 m, May, 1908, Elmer 10168. 
14. Athyrium stramineum Copeland sp. nova. 
Athyrium gregis A. nigripedis, rhachide sicc-o sorisque perpallidis, 
lamina membranacea nigra distinctum. 
Radicibus rigidis ut videtur carentibus; stipite 30 cm alto ad basin 
paleis brunneis paucis vestito, aliter- glabro, vivo succulente, rhachideque 
viridibus; fronde 50 cm alta, 20 cm lata; pinnis pinnatis utroque latere 
ca. 8, stipitatis, majoribus 15 cm longis, 5 cm latis, acuminatis, infimis 
paullo reductis suberectis; pinnulis subobliquis, 25 mm longis, 14 mm 
latis, obtusis, fere ad costam incisis, medialibus anguste adnatis, distalibus 
decurrentibus, tenuissime membranaceis, infra saturate viridibus, supra 
fere nigris; segmentis oblongis, denticulatis ; soris usque ad 3 mm longis, 
oblongis, costalibus, sparsis, indusiis angustis virido-albis fere omnibus 
asplenioideis ; sporangiis pallide brunneis. 
Damp fertile soil, altitude 750 m, Horn of Negros Mountain, April, 1908, 
Elmer 9103. 
15. Athyrium platyphyllum Copeland sp. nova. 
Species distinctissima gregis A. nigripedis, pinnulis majoribus sym- 
metricis amplis, pinnis longe stipitatis. 
Rhizomate ut videtur horizontale, 1 cm crasso, radices nigras rigidas 
emittente, apice basique nigra stipitis paleis fusco-nigris angustis 6 
mm longis vestitis; stipite 25-50 cm alto, fere glabro rhachidibusque 
stramineis; fronde grande fere 60 cm alta, 40 cm lata, subdeltoidea, 
acuminata, tripinnatifida ; pinnis 45°-60° distantibus, acuminatis, pedi- 
cellis pinnarum infimarum usque ad 4 cm longis ; pinnulis plerumque 
aiigulo recto distantibus pedicellatis sed superioribus adnatis et supremis 
coadunatis, majoribus 7 cm longis, ultra 2 cm latis, basin versus fere ad 
costam lobatis; segmentis usque ad 5 mm latis, subfalcatis, sinu aperto 
