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auricula iiiterdum ohso'ete mucroiuil.'ita ; pinnulae maximae 2— 3 cm. longae, 

 3/4 — 1'/4 cm. latae. Sori costam quam margiiiem magis approximati; indusium 

 minutissimiim, iiiter capsulas mox absconditum, deciduum. 



Forest; ait. 1200 m. 



Sumatra {Dell, Bandar-baroc, J.A. Lorzing No. 5743, 16 Juiie 1918). 



P o 1 y s t i c h u m p u n c t i c u 1 a t u m. v. A. v. *R. 



Rhizoma brève, erectum; squamae longae, auguste subulalo-laiiceolatae, 

 filiformi-acumiiiatae. integerrimae, rufae vel obscure fuscae. Stipites aggreg- 

 ati, 30—40 cm. longi, cum raciiide in sicco pallide fusci, squamosi; squamae 

 inferiores densae, squamis rhizomatis similes, superiores sparsae, in squamulas 

 racliidis sensim transientes, deciduac, basibus persistentibus, punctiformibus, 

 brunneis. Frondes ovatae, 25—30 cm. longae, 15 — 20 cm. latae, acuminatae, 

 basi 3-pinnatae; rachis primaria squamulis graciiibus, piiiformibus, deciduis 

 munita, demum puncticulata. Pinnae asceiidentes, infimae maximae, petiolatae, 

 ovato-lanceolatae, 15—18 cm. longae, inaequilaterae, postice quam antice 

 latiores. Pinnulae ascendentes, lanceolato-subrhomboideae. Segmenta tertiaria 

 coriacea, subtus parce piliformi-squamulosa, glabrescentia, rhomboideo- 

 oblonga, lobato-crenata ad serrata, non aristata, infima antica maxima, 

 usqne ad 2'/2 cm. longa et 1 cm. lata, basi antica lobo lineari-oblongo, 

 obtuso, sublibero munita. Sori mediales; indusium specie carens, minutis- 

 simum, rudimentare, caducum. 



Forest; ait. 1500 m. 



Sumatra {Mt. Malintang, H. A. B. Bunnemeijer No. 4236, 1 August 1918). 



Pteris reducta, Bk., in Journ. of Bot., XVIll, 211; v. A v. R., Mal. 

 Ferns, 353; Suppiem. I, 246; Pt. biaurita, L., var., C. Chr., Ind. Fil., 

 593, 606. 



C. G. Matthew's No. 683a from Mount Sago and C. J. Brook's Nos. 

 77/S and 431 /S from Lebong Tandai and Tambang Sawafi prove that 

 Baker's original diagnosis lias been made aîter young plants and that 

 Pt. salakensis v.A.v.R. is a fully developed form of this species. 



Caudex short, clothed vvith small, brown, subulate, subsetiform, sub- 

 denticulate squamules. Stipes fasciculate, 20 — 65 cm. long, stramineous 

 or dirty-pale-fuscous, deciduously, miuutely fibrillose, at length more or 

 less punctato-asperulous. Fronds either 1-foliolate or 2 — 3-foliolate with 

 a latéral leaflet (on one side or on both sides) below a terminal one. 

 Single or terminal leaflet ovate or linear-lanceolate from a broad, truncate 

 base, 20 — 35 cm. long, 5—13 cm. broad, narrowed gradually towards 

 the shortiy subcaudate ape}^^ pinnatipartite nearly to the costa; latéral 

 leaflets similar to the termincU one but smaller, more or less remote from 

 it, sessile or shortiy petiolulate^, not forked at the base. Lobes horizontal, 

 linear or linear-oblong, 2V2 — 6\'2 cm. long, those of the barren fronds 

 close or somewhat imbricate, 1 — IV2 cm. broad, entire, broadly rounded 

 and whether or not somewhat emarginate at the apex, those of the fertile 

 fronds mostly approximate or somewhat remote, often narrower. Texture 



