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data, postice curvato-excisa; costulae subtiis setulosae; venae subascendentes, 

 usque ad 3—5 iitrinque, saepe furcatae. Sori relative magni, 1— 4 utrinque, 

 submediales; indusium obscure fiiscum, tenuie, evaiiescens. 



Near C. Robinsonii Copel. 



Luzon {Sorso^ron, M. Ramos, Philipp. Bur. of Sci, No. 23411). 



C y a t h e a a m p h i c o s m i o i d e s, v. A. v. R. 



Stipites sursum aculeolati et minute puncticulati, cum racliide subfiisci, 

 pallide brunneo-furfuracei, glabrescentes; spinulae breviter conicae, acutae, 

 castaneae. Frondes (stipite includente?) 4: 2 m. longae, 3-pinnatipartitae; 

 achides parce aculeolatae, subpuncticulatae, subtus pallide brunneo-furfiir- 

 aceae, glabrescentes, supra rufo-pubescentes. Piiinae ascendentes, maximae 

 breviter petiolulatae, usque ad + 65 cm. longae et 20 cm. latae, acuminatae. 

 Pinnulae firmiter herbaceae, glabrae, patentes vel subhorizontales, longe 

 lanceolato-ovatae; pinnulae inframediales maximae, breviter petiolulatae, 

 usque ad 10 cm, longae et 2'/4 cm. latae, obtusiusculae ad subacuminatae, 

 profunde pinnatipartiiae, bas! paullo angustatae ; costa supra rufo-pubescens, 

 subtus parce frufuracea et squamulosa, glabrescens, squamulis parvis, 

 lanceolato-ovatis, brunneis. Segmenta patentia, subremota, lineari-oblonga, 

 usque ad 1 cm. longa et 2'/2 — 3 mm. lata, obtusa, apicem versus dentato-cren- 

 ata, inferiora paullo abbreviata, interdum libéra; venae usque ad + 10 

 utrinque, furcatae, interdum 3-furcatae. Sori costulares; indusium castaneum, 

 minutum, juvénile cupuliforme, demum subplano-patelliforme, iiiaequilaterum, 

 subhemitelioideum. 



Forest; ait. 900 m. 



Sumatra {Dell, Petani River, J. A. Lôrzing No. 5782, 9 July 1918). 



Cyathea callosa, Christ, in Bull. Herb. Boiss., 2e Série, VI, 

 1008; V. A, V. R., Mal. Ferns, 787; Copel., in Philipp. Journ. Sci., IVS 31, 

 50; ? Hemitelia. 



Fragments of plants received from the Philippines and labelled C. 

 callosa Christ agrée very well with the diagnosis given by Copeland. It may 

 be possible that the sori of tliis species have the indusium at first complète 

 (i. e. cyatheoid), as Copeland says in his key, but in the spécimens received 

 the numerous ripe sori have the indusium without exception hemitelioid. 



Cyathea d e n s i s o r a, v. A. v. R. 



Stipites cum rachidibus principalibus castanei, aculeati, ferrugineo-fur- 

 furacei ; aculei partim breviores, partim longiores, superiores rachidum sensim 

 abbreviati, punctiformes. Pinnae patentes; pinnae fertiles breviter petiolatae, 

 lanceolatae, + 40 cm. longae et 12'/2 cm. latae, relative longe acuminatae, 

 pinnatae, basi paullo angustatae, truncatae. Pinnulae subconfertae, horiz- 

 ontales, infra apicem serrato-denatum usque ad + 35 utrinque ; pinnulae 

 superiores simplices, brèves, adnatae vel sessiles et basi truncatae, antice 

 subauriculatae ; pinnulae centrales m.aximae, lineari-lanceolatae, subsessiles, 

 usque ad 6'/4 cm. longae et ad basin truncatam IV4 cm. latae, acuminatae, 



