﻿192 S2. DRYOPTERIS. § 1. LASTRAEA. 



the higher ones simple. Sori ± terminal on the acropetal veinlets, + medial 

 between the costulae and the edge. 



Malaya ; Burmah. • 



(32) W. singalaiiensifS, C. Chr., Ind. Fil.; Lastraea singalanensis, 

 Bedd., Handb. Ind. Perns, Suppl., 54; Neplirodium singalanense, Bk., Journ. of 

 Bol., XVIII, 212. 



Stipes densely tufted, grey, slender, to ± 30 c.M. long, with a few small, 

 linear, brown scales near the base. Fronds lanceolate-oblong, 2-pinnate, 45 — 65 

 c.M. long, 13 — 30 c.M. broad. Pinnae lanceolate, sessile, the central ones 

 6'/2 — 17 c.M. long, 2 — 2 '/a c.M. broad, the lower a little reduced, cut down 

 nearly to the costa into lanceolate, entire or crenate lobes 2 — 4 m.M. broad. 

 Texture rather thin; rachis substramineous and minutely pubescent; surfaces 

 finely pubescent; veins 8 — 10-jugate, distinct, chiefly forked. Sori small, medial. 



Sumatra, Malacca. 



* (53) D. IWigmanii, C. Chr., Ind. Fil.; Aspidium Wigmanii, Rac, 

 Bull. Ac. Crac, d902, 61; Nephrodium Wigmanii, Rac, MS. in Herb. Bog. 



Caudex erect, clothed like the lower part of the stipes with castaneous, 

 lanceolate-subulate, deflexed scales. Stipes ± 50 c.M. long, canaliculate, densely 

 clothed like the whole frond (costae, veins and parenchyma) with erected or 

 spreading, pale-coloured or whitish, glufinose fibrils. Fronds 100 — 150 c.M. 

 long, 30 — 40 c.M. broad. Pinnae numerous, rather approximate, opposite, 

 linear-lanceolate, acuminate, sessile or stalked, erecto-patent, to 25 c M. long, 

 the lower deflexed, 2V2 — 4'/^ c.M. broad in the barren, o*^ — ^^j c.M. broad 

 in the fertile fronds, deeply pinnatifid. Lobes close, 4 — 5 m.M. broad, crenate 

 or serrate, linear-oblong, the base often slightly narrowed. Texture herbaceous; 

 main veins pinnate with 4—8 pairs of mostly forked veins. The lowest 

 posterior lobe mostly shorter than the lowest anterior one. — Fertile fronds 

 with the lobes deeper, narrower, more distant, repando-crenate. Sori numerous, 

 1 — 2 to a crenation; indusium reniform. 



Aru Islands. 



* D. filix. iiiafS, Schott, C. Chr., Ind. Fil.; Aspidium Filix-mas, Sw., 

 Christ, Farnkr. d. Erde, 256; Laslraea Filix-mas. Pr., Bedd., Handb. Ind. 

 Ferns, 248; L. odontoloma, Moore, Bedd., Ferns S.I., tab. CXIV; Nephrodium 

 Filix-mas, Rich., Hk. Bk., Syn. Fil., 272; — var. parallelogramma; wr. /?fer«7/osa, 

 Christ, in Ann. Btz., XV, 127; A parallelogrammum, Kze, Linn., XIII, 146; — 



