﻿640 71. POLYPODIOM. § 6. PLEOPELTIS. b*. LEPISORDS. 



(160) P. lycopodioideis, i., Hk. Bk., Syn. Pil., 5S7; Chrisl, 

 Farnkr. d. Erde, fig. 280; P. lagopodioides, Besv., Berl. Mag., V, 313. 



Rhizome wide-creeping, the scales lanceolate-subulate, imbricate, reddish 

 when young, at length ferrugineous or decolored. Stipes none or short, dis- 

 tant. Fronds dimorphous. Barren fronds 5 — 10 c.M. long, 1 — 3 c.M. broad, 

 ovate-oblong, the apex commonly bluntly rounded, the base narrowed, the 

 edge entire. Texture coriaceous; surfaces naked or the costa slightly scaly; 

 veins moderately visible, forming on each side a first row of narrow, longitu- 

 dinal costal areolae, a second row of large transveral areolae with included, 

 free or anastomosing veinlets, which are directed towards the edge, and near 

 the latter 1 or more rows of small areolae with or without free veinlets. 

 Fertile fronds longer and narrower than the barren ones, narrowed gradually 

 below. Sori large, in 1 row on each side, solitary in the largest areolae 

 (those of the 1^^ row), on the included veinlets. 



Java; Hawaii, Trop. America ^ Africa, Mascarenes. 



* (161) P. Raapii, r. A. r. R., Bull. D^p. Agr. I. N., 4908, XVIU, 

 23, tab. IV, fig. 1, a— b. 



Rhizome creeping, the scales linear-lanceolate, deciduous. Stipes scat- 

 tered, 1 — 5 c.M. long, naked. Fronds lanceolate, + 10 — 12 c.M. long, 

 '/^ — 1'/2 c.M. broad at or a little below the middle, the fertile ones the nar- 

 rowest, narrowed gradually towards both ends, the apex blunt, acute or 

 acuminate, the edge entire. Texture thinly herbaceous or membranaceous; 

 surfaces naked; costa distinct; veins visible, forming 1 — 5 rows of irregular 

 areolae on each side of the costa; areolae with free veinlets. Sori distant, 

 partially round, partially oblong and oblique, placed in 1 row on each side 

 nearer the margin than the midrib, sometimes accompanied by some few 

 (1 — 3) scattered ones. — In swamps and ditches. 



Another (submerged) water-fern, found in Lombok by Dr. Ernst, has the 

 stalks shorter, the fronds a little broader and slightly scaly on the costa be- 

 neath, and the sori placed in 1 — 2 rows nearer the midrib than the edge, 

 whether or not accompanied by a few others placed in a 5'''', outer row (v. 

 A. V. R., 1. c, tab. IV, fig. 2, a— b). 



Baiu Islands (Raap, No. 671). 



(162) P. zoisteriforine, Watt., Hk. Bk., Syn. Pil., 357; Mett., 

 Farng., I, Polypod., tab. I, fig. 26 — 27 ; Pleopellis zoster aeformis, Bedd., Ferns 

 Br.I., I, tab. CXXIII. 



