﻿186 22. DRYOPTERIS. § 1. LASTRAEA. 



Hk., Spec, Fil., IV, 108; N. calcarahm Hk., Hk. Bk., Syn Fil., 264; — var. 

 serecia ; L. cnlcar-'ita, Moore, var. sericea, Bedd., Handb. Ind. Ferns. 237 ; L. se- 

 ricea, SclioU, Bedd., Ferns Br.L, 11, tab. CCCVIII. 



Rhizome erect, clothed with few, broad, lanceolate scales. Stipes tufted, 

 4 — TO c.M. long, hairy on the upper side, deciduously scaly near the base. 

 Fronds 10 — 60 c.M. long, 5 — 20 c.M. broad, ovate, the apex acuminate, pin- 

 natifid with linear-oblong, suberect lobes. Pinnae spreading or erecto-patent, 

 sessile or stalked, 1—2 c.M. broad, the lower ones hardly shorter, the apex 

 acute or acuminate, the base cuneate to truncate, the edge cut down ^/j or 

 more to the costa into oblong, acute or bluntish, falcate or suberect lobes 

 1 — 3 m.M. broad, the lowest lobe on the anterior side not rarely elongate, 

 + parallel to the rachis. Texture herbaceous but firm ; rachis and surfaces 

 villous; veins simple, 3 — 8 on a side. Sori medial; indusium hairy or naked, 

 persistent. — A well-marked plant by the often nearly erected lobes. N. fal- 

 cilobum, Hk. is a form with broader pinnae and deeper and more spreading 

 lobes than usual. 



War. sericea: Pinnae short, oblong, 272 — 3 c.M. long, 1 — 2 c.M, 

 broad, obtuse at the apex or ending in a sudden point, never cordate. Indu- 

 sium naked. 



Malaya ; Br. India, Soulh. China, Samoa , — var sericea : Malacca, North. ^ 

 South. India. 



* (18) O. viscosa., O. Htxe, Q,.C[iY.,\\\A.V\\.,lSephrodiuinviscosum, 

 Bk., Hk. Bk., Syn. Fil., 264; Laslraea viscosa, J. Sin., Bedd., Ferns Br.L, II, 

 tab. CCCXXXIV. 



Stipes 15 c.M. or more long, firm, erect, reddish-brown, slightly scaly, 

 finely villose. Fronds 20 — 30 c.M. long, 10 — 15 c.M. broad, oblong-lanceolate. 

 Pinnae close, 5—8 c.M. long, 1 — 172 c.M. broad, cut nearly to the costa into 

 close, spreading, linear-oblong lobes under 2 '/j ni.M. broad. Texture herbaceous; 

 rachises villose; at least the under surface densely glandular; veins 5 — 6 on 

 a side. Sori medial. — Lower pinnae a little shorter and deflexed. 



Malacca, Sumatra, Borneo, Philippines. 



* (19) a>. graeilesceiis, o. Jttxe, C. Chr, Ind. Fil; Aspidium 

 gracilesccns, BL, Rac , Flor. Btz., I, 170., Lastraea gracilescens, Moore, Bedd., 

 Ferns Br.L, II, tab. CCLIII; Ncphrodium gracilescens. Ilk., Hk. Bk., Syn. Fil., 

 262 ; — var. decipiens, Bedd., Handb. Ind. Ferns, Suppl., 5 1 ; var. glanduligera, 

 Bedd., 1. c; A. glanduligerum, Kze., Mett., Farng., IV, Phegop. & Aspid., No. 207. 



