— 37 — 



Stipites remoti, 1 — 15 cm, longi, glabri, frondium sterilium breviores, 

 frondium fertilium longiores. Frondes heteromorphae, glabrae. Frondes 

 steriles coriaceae (rigidae vel flaccidae), oblongae, ovatae vel lanceolatae, 

 2—10 cm. longae (raro longiores), 1— 3'72 cm. latae, apice late rotun- 

 datae vel obtuse acuminatae, margine cartilagineo saepe anguste recurvatae, 

 subintegerrimae vel late (non profunde) crenulatae, basi cuneatae et leviter 

 decurrentes; costa supra saepe plus minusve sulcata, subtus prominens; 

 costulae (main veins) in frondibus rigidis sat absconditae, in frondibus 

 flaccidis sat conspicuae, ascendentes, marginem non attingentes; areolae 

 absconditae, Frondes fertiles anguste lineares, T'/a— 25 cm. longae, 2—3 

 mm. latae, in vivo crassissimae, supra in sicco conspicue concavo-canalic- 

 ulatae, apice obtusae vel obtusiusculae, margine integerrimae, subrepandulae, 

 basi longe decurrentes. Sori magni, remoti, utrinque 1-seriati, oblongi, 

 costae paralleli, submarginales, specie laterales, sat superficiales. 

 Near PI. de Kockii v.A.v.R. 



Sumatra (Mt. Talamau, H. A. B. Bünnemeijer No. 772). 



Pleopeltis Gibbsiae, v.A.v.R,; Polypodium argyropus, Gepp (not Ridl.), 

 in Gibbs, Contrib., 75. 



Ridley's P. argyropus is unknown to me but Miss Gibbs' No. 5689, 

 from Mt. Arfak, does not agree with Ridley's incomplete diagnosis, A 

 duplicate of Miss Gibbs' plant, which is very near PI. de Kockii v. ^4. v./?., 

 is distinguished by the following characters: 



Eupleopeltis, Pleuridium. — Rhizoma firmum, in sicco brunneum, albido- 

 pruinosum, squamis suberectis, e basi lata peltataque subulatis, graciliter 

 subcrispato-acuminatis,minutissime denticulatis,ferrugineis,demum decoloratis 

 dense vestitum, Stipites remoti, '/2 — 3 cm. longi, frondium fertilium longiores, 

 glabri, basi frondium anguste alati vel 2-marginati, Frondes dimorphae, 

 Frondes steriles coriaceae, glabrae, ovatae ad lineari-lanceolatae, + 4— 8 cm, 

 longae, 1 — 2V2 cm, latae, obtusae vel obtusiusculae, margine incrassatae, 

 recurvatae et late crenulatae, basi cuneatae vel rotundato-cuneatae; costa supra 

 leviter sulcata, subtus prominens; venae primariae + 10 — 20 utrinque, marginem 

 fere attingentes, ascendentes, prominentes; vena« secundariae absconditae vel 

 prominentes. Frondes fertiles lineares, + 12'/2 cm. longae, 3 — 5 mm. latae, 

 in sicco planae vel canaliculato-complicatae, apicem et basin versus sensim 

 angustatae, costa marginibusque iis frondium similibus. Sori magni, oblongi, 

 superficiales, utrinque 1-seriales, costae paralleli. 



Very near PI. pseudo-lateralis v. A. v. R. 



New Guinea. 



Pleopeltis Beccarii, v.A.v.R., Bull. Dép. Agr. 1. N., 1909, XXVIl, 4; 

 Polypodium Beccarii, v.A.v.R., 1908, XVlli, 22; Mai. Ferns, 633. 



