﻿606. DICTYOPTERIS. § 1. ARCYPTERIS. 519 



(t46) D. ISoliSteri, v. A. v. JR.} Aspidium Bolsferi, Copel. Philipp. 

 Journ., I, Suppl., 252; ? Tectaria Bryanii, Copel., 1. c. II, 412, p. p. 



Rhizome rather ascending, woody, the extremity clothed with rather 

 long, apiculate, caslaneous scales. Stipes close, ± 50 c.M. long, long-winged, 

 the unwinged base ± 5 c.M. long, the wing ± 1 % c.M. broad. Fronds 

 60 — 80 c.M. long, ovate in outline, pinnatifid. Lobes ± 5-jugate, ovate, spread- 

 ing, + 30 c.M. long, + 10 c.M. broad, acuminate, entire, distinctly nar- 

 rowed at the base, the costal wing I'/j — 3 c.M. broad. Texture coriaceo-pa- 

 pyraceous ; surfaces naked ; main veins reaching nearly the margin, arcuate ; 

 transversing veins inconspicuous in the fertile region. Sori superficial, in 2 

 rows between the transversing veins, 4 — 10 to a row, occupying the whole 

 under surface of the fertile segments. 



Mindanao. 



» (15) ». pentapliylla, v. A. v. «., Bull. Dep. Agr. I. N., i908, 

 XVIII, 16; Aspidium pentaphyllum, v. A. v. R., 1. c. 



Stipes + 50 c.M. long, like the rachis brown or blackish-purpureous, 

 minutely fibrillose and deciduously scaly, the scales few, scattered, lanceolate- 

 subulate, brown or purpureous. Fronds 30 — 45 c.M. long, 15 — 25 c.M. broad, 

 with a terminal pinna and 2 lateral ones on each side. Terminal pinna 

 15 — 20 c.M. long, simple, broadly ovate, acuminate, the edge undulate with 

 rounded or sharp lobes, the base broadly cuneate or rounded, not rarely 

 purveyed with 1 — 2 lanceolate, bluntly rounded or acuminate, erecto-patent 

 segments. Lateral pinnae erecto-patent, distant, broadly lanceolate, unequal- 

 sided, the lower side broader than the upper, the apex acuminate, the 

 edge entire or undulate, the base broadly cuneate to rounded ; lower pinnae 

 with an oblong or sublanceolate, blunt or acuminate lobe at the l)ase on the 

 lower side. Texture subcoriaceous, subpellucid; costae and main veins promi- 

 nent; veins visible; areolae numerous, with free veinlets; surfaces naked. Sori 

 numerous, scattered irregularly, often confluent. — According to Copeland's 

 conception of the generic name this plant should he cnUeA Tectaria pentaphylla, 

 V. A. V. R. 



New Guinea (Treub). 



(16) I>. ^l¥hitfordi, v. A. v. n.,- Aspidium Whilfordi, Copel., Polj- 

 pod. Philipp., 55; C. Chr., Ind. Fil.; Tectaria irregularis, Copel. ,^\i\\\^^.iow.Ti\., 

 II, 416, p. p. 



Rhizome short, suberect, densely scaly at the apex. Stipes 20 — 50 c.M. 



