﻿630 71. POLYPODIUM. § 6. PLEOPELTIS. b"^. LEPISORUS. 



X. Sori round. (1S7) P. subgeminatum. 



X X. Sori oblong. (1S8) P. papuanum. 



a.a. Substance of the fronds rather thin ; veins distinct. ( ') 



b'. Sori in 1 — 2 regular or irregular rows on each side of th midrib. 

 c'. Fronds dimorphous. 



•$•. Fertile fronds orbicular and barren in the lower, long-linear 

 in the soriferous upper part. (1^9) P- Annabellae. 



•{•.•J". Fertile fronds ligulate, cuneately narrowed at the base. 



(160) P. lycopodioides. 

 c'.c'. Fronds uniform, the fertile sometimes narrower than the barren. 

 d. Fronds rather small, under 20 c.M. long. 



e. Areolae with free veinlets. (161) P. Raapii. 



e'.e'. Areolae without free veinlets. (162) P. zosteriforme. 



d'.d'. Fronds larger, ± 30—60 c.M. long. (165) P. normale. 

 b'.b'. Sori in several rows on each side, or scattered irregularly. (^) 

 1'. Sori superficial. 



3'. Rhizome scales blackish or dark-brown, not squarrose. 



(164a) P. myriocarpum. 



(1646) P. sablanianum. 



2'. 2'. Rhizome scales brown, squarrose. (163) P. glossipes. 



I'.l'.Sori immersed. (166) P. linguaeforme. 



(132) P. holopbyllam, Bis., Journ. of Bot., XVII, 45 (not XXVI, 

 325); (? P. flabellivenium, Bk., C. Chr., Ind. Fil.). 



Rhizome wide-creeping, the scales dense, erecto-patent, minute, linear- 

 subulate. Stipes subdistant, brown, polished, slender, naked, 2 Vj — 5 c.M. long. 

 Fronds roundish or oblong, 8—15 m.M. each way, crenulate round the edge 

 except towards the base. Texture rigid; surfaces naked; no distinct midrib; 

 veins flabellate, forming copious irregular areolae without free veinlets. Sori 

 few, round, superficial, scattered irregularly. 



Borneo. 



(133) P. siibspariiam, Ble., Journ. of Bot., XVIII, 215. 

 Rhizome slender, wide-climbing, firm, flexuose, thinly clothed with small, 



adpressed, bright-brown, lanceolate scales. Stipes distant, stiffly erect, naked, 



(') See also P. revolutum, C. Cfir. 

 (') See also P. normale, Don. 



