- 26 — 



majoribus intermixtis asperi; squamulae longe filiformes, leviter crispatae, 

 brunneae vel castaneae; furfur ferrugineus. Frondes 3-pinnatifidae. Pinnae 

 sessiles, basi articuiatae, usque ad 50 cm. vel plus longae, acuminatae; 

 rachides secundariae supra pilis castaneis, incurvatis hirsutae, ceterum 

 racliide primaria similes. Pinnulae numerosae, sessiles, basi articuiatae, 

 firmiter herbaceae, glabrae, e basi late truncata lanceolatae, centrales max- 

 imae, 8 — 9 cm. longae, + ^^U cm. latae, fere usque ad costam pinnat- 

 ipartitae, apice relative abrupte longe acuminatae et serrato-dentatae; costae 

 supra ferrugineo-hirsutae, subtus squamulosae; squamulae inferiores planae, 

 longe subulatae, brunneae, squamulis minoribus, piliformibus, paucisinter- 

 mixtae; squamulae superiores sensim buUatae, ovatae, acuminatae, ferrug- 

 ineae. Lobi patentes, falcati vel subfalcati, inferiores fere usque ad 1 cm. 

 longi, +2 — 2 Va mm. lati, obtusi, crenati; costulae supra glabrae, subtus 

 certe basin versus parce builato-squamulosae; venae usque ad 10 — 12 

 utrinque, furcatae, superiores simplices. Sori usque ad + 6 utrinque, sub- 

 costulares, ad venas inferiores positi; indusium rudimentäre, brunneum. 

 Sumatra {Mt. Kaboeng, H.A.B. Bünnemeijer No. 1219). 



Hemitelia arfakensis (Gepp), v. A. V.R.; Alsophila arfakensis, Gepp, 

 in Gibbs, Contr., 70. 



Indusium present, breaking down irregularly, at length consisting of a 

 half whorl of red-brown, fibril-like fragments. 



New Guinea. 



Histiopteris incisa (Thb.), j. Sm., Hist. Fil., 295; v. A. V.R., Mai. 

 Ferns, 349; P.eris incisa, Thb., Prod. Flor, Cap., 171. 



Var. fibriilosa: Forma typica similis sed pinnulis - subtus ad venas 

 pilis articulatis fibrillosis. — Sumatra (Bengkoelen, Lebong Simpang, C. J. 

 Brooks No. 290/S). 



Histiopteris reniformis, v.A.v.R. 



Pinnulae basilares stipuliformes parvae, reniformes; pinnulae ceterae 

 remotae, horizontales, herbaceae, glabrae, sessiles, maximae in specimine 

 usque ad 8 cm. longae et infra medium 2 cm. latae, integerrimae, apicem 

 obtusiusculum vel acutiusculum (non acuminatum) versus angustatae, basi 

 cordatae et interdum auriculatae ; areolae elongato-hexagonae, oblique 

 patentes, venulis liberis carentibus vel rarissiniis. Sori ? 



Sumatra {Bengkoelen, Lebong Simpang, C. J. Brooks No. 289/S). 



Humata pusilloides, Copel, in Saraw, Mus. Journ., il (111), 338. 



This species is unknown to me since we do not possess authentic 

 material and Copeland's diagnosis of it. We have in the Buitenzorg Her- 

 barium 3 plants from Borneo (all determined by Christ as Davallia alpina 



