- 47 - 



mm lata, semifacie superiore integerrima vel obsolète denticulata, 

 basin versus minute denticulata, basi late rotundato-cordata, 

 semifacie inferiore integerrima vel subintegerrima, basi abrupte 

 truncato-cuneata; lateralia ramulurum ullimurum minora, relative 

 multo angustiora, distinctius spurie venulosa, usque ad 21/2 mm 

 longa, minus inacquilatera, semifacie superiore in parte inferiore 

 cuneata sed basi rotundata ; folia intermedia plus minusve erecta; 

 intermedia stipitis remota, late oblonga, integerrima vel obsolète 

 denticulata, acuminata, basi oblique 2-auriculato cordata, auricula 

 exteriore producta, leviter hamato-incurvata; intermedia rachidis 

 primariae similia, magis conferta, maxima ca 13 — 4 mm longa, 

 mucronato acuminata vel breviter cuspidata; intermedia ramulo- 

 rum ultimorum minora, imbricata, basi exteriore rotundato-cordata 

 basi interiore auguste rotundata vel rotundato-cuneata. Spicae 

 quadrangulares, usque ad 2 cm longae, ca II/2 mm crassae; 

 sporophylla isomorpha, ovata, acuta, carinata, integerrima vel 

 parce denticulata; macrosporae flavido-fuscae vel sordide fuscae, 

 latere basai i dense irregulariter rugulosae, costis apicalibus annulo 

 irregulariter rugiformi cinctis, gibbis non raro glauco-pruinosis ; 

 microsporae sordide aurantiacae, latere basali gibbis parsis, conicis 

 vel bacilliformibus ornatae. 



Bornéo [Tenampak, North Bornéo Boundary Commission, 

 Capt. V. Genderen Stort, Amdjah No. 610). 



^ela^'iiiella fiinhrillifera. r\ A, r. ff. 



Heterophyllumj Monostelicae, à^ A scetident es. — Ca,u\es erecti, 

 vel e basi repente ascendentes, ca 15 20 cm longi, parte infe- 

 riore simplices, obtuse quadrangulares, ca 1 mm crassi, subtus 

 convexi, supra in sicco 3-sulcati, parte superiore 3 pinnati, in 

 circuitu rotundi, triangulares vel ovati, rachide primaria foliis 

 lateralibus inclusis 5 — 7 mm lata; pinnae inferiores usque ad 

 ca 7 cm longae, deltoideae; l'amuli ultimi ca 5 — 121/2 mm longi, 

 ca 2 — 3 mm lati. Folia caulina inferiora paullo remota, sub- 

 isomorpha; lateralia late triangulari-ovata, acuta, basi latissime 

 adnata et auguste 2-auriculato-cordata, crebre fimbriatociliata, 

 maxima ca 2 mm longa lataque; intermedia subsimilia, + aequi- 

 longa sed multo angustiora, acuminata; folia partis ramo-ae valde 

 heteromorpha; lateralia + imbricata; lateralia rachidis primariae 

 horizontalia vsl subhorizontalia, subfalcato-oblonga, acuta, utroque 



