— 40 — 



P. subdichotomum Rae. differs in having the fronds longer, long-hairy, 

 the segments broader, the sori round or oblong, the capsules often long-setose. 

 Sumatra (Bengkoelen, Lebong Simpang, C. J. Brooks No. 303/S). 



Polypodium clavifer, Hk., Hk. Bk., Syn. Fil., 334; v. A. V.R., Mai. 

 Ferns, 608; Suppl. I, 365. 



Forma typica.— Also in Ceram(Mt. Wo/o^, L. Rutten's Explor. Commiss., 

 Coll. Kornassi No. 704). 



Polypodium gracillimum, Copel., Polypod. Philipp., 121; v. A. V.R., 

 Mai. Ferns & All., Suppl. I, 350. 



Var. setosum: Frondes breviores, latiores; segmenta majora, certe 

 apicem versus setis longis parce clWaia.— Sumatra (Bengkoelen, Lebong 

 Simpang, C.J, Brooks No. 301 /S). 



Polypodium brevivenosum, v.A.v.R. 



Eupoly podium, Pinnata. — Rhizoma erectum,squamulisdensis,ferrugineis, 

 subfiliformi-subulatis, integerrimis, crispatis vestitum. Stipites conferti, cum 

 rachide nigrescentes, 1— 2'/2 cm. longi, cum fronde pilis longis, rubidis 

 ornati. Frondes subcoriaceae, subpellucidae, elongato-lanceolatae, 6 — 9 cm. 

 longae, ^j^ — I'/i — 1'/2 cm. latae, fere ad rachin incisae, apice acuminato 

 subrepando-crenatae, basi paullo angustatae. Pinnae patentes, approximatae 

 vel subremotae, usque ad ^4 cm. longae, I'/a — 2'/2 mm. latae, obtusae, 

 integerrimae, inferiores sat remotae, abbreviatae; costae flexuosae; venae 

 obliquae, simplices, brevissimae, usque ad 5 utrinque, indistinctae. Sori 

 remoti, costae plus minusve approximati, ad venas terminales; capsulae 

 nudae, pilis paucis intermixtae. 



Sumatra {Bengkoelen, Lebong Simpang, C.J. Brooks No. 299/S). 



Polypodium Cesatianum, Bk., Journ. of Bot., XVll, 42 (nom. nud.); 

 v.A.v.R., Mai. Ferns, 603. 



Rhizoma albido-(vix caesio-)pruinosum ; squamulae deciduae, nigro- 

 fuscae, sursum integerrimae, deorsum irregulariter eroso-denticulatae ; stipites 

 (in speciminibus exsiccatis nostris) olivaceo-fusci ; rachis supra canaliculata, 

 subtus teres; pinnae horizontales, margine in sicco recurvatae, partim 

 integerrimae, partim latissime levissimeque crenulatae, inferiores regulariter 

 vel irregulariter abbreviatae, infimae + '/a — ^/a longitudinis centralium 

 metientes et ad stipitem leviter decurrentes. 



It may be possible that the plants gathered by Beccari (the non- 

 described original P. Cesatianum Bk.) and Hallier (described by me as P. 

 Cesatianum Bk.) are not identical and that the former fits Copeland's 

 diagnosis and plate of P. coloratum (Philipp. Journ. Sei., 111^, 347, tab. 

 VI). After the descriptions and the plate mentioned, however, Hallier's 



