﻿21. Pleocnemia. 171 



of the same group slightly so, fonning 1 — 2 rows of irregular areolae near the 

 costae and costulae without included free veinlets, the rest free. Diels, in 

 Engl, k Prantl, Nat. Pll.Pam,, I*, fig. 97, D. (Aspidium, p.p., C. Chr., Ind. Fil). 

 Tropical Asia, Polynesia. 



a. Fronds simple, lobed or pinnali/id. (1) P. heterophylla. 



«.«. Fronds at least 2-pinTiati/id. 

 b. Texture rather coriaceous. 

 1. Lower pinnae pinnalifid. 



2. Surfaces slightly hairy on the veins. (2) P. excellens. 



2.2. Surfaces naked, or the upper one slightly scaly . (3) P. raegalocarpa. 

 ±.1. Lower pinnae pinnate, at least on the lower side. (4) P. Leuzeana. 

 h.h. Texture rather herbaceous or membranaceous. 



c. Lower pinnae pinnatifid. (5) P. gigantea. 



c.c. Lower pinnae pinnatifid with the lowest basiscopical segment pinnatifid 



again. (6) P. membrani folia. 



c.c.c. Lowest pinnae pinnate at the base, the lowest basiscopical segment 



pinnatifid or pinnate at the base. 



d. Indusinm cordato-reniform. (7) P. Bakeri. 



d.d. Indusium peltate. (8) P. devexa. 



(1) ■*. he(eiN»p1iyllffi, v. A. ». jr. ,• Nephrodium heterophyllum, Hk., 

 Hk. Bk., Syn. Fil., 295 ; Aspidium heterophyllum, Mett., Copel., Polypod. Philipp., 

 39., Hk., Icon. PI., X, tab. CMXX; Dryopteris canescens, C. Chr., var., C. Ghr., 

 Ind. Fil. 



Rhizome creeping. Stipes 5 — 10 c.M. long, densely villose, scaly towards 

 the base. Fronds 12^15 c.M. long, + 2'/^ c.M. broad, simple, acuminate, 

 the edge lobed '/i — Vs'Way down into numerous, oblong, blunt, slightly 

 falcate lohes. Texture coriaceous; surfaces villose especially on the edges 

 and the midribs beneath; main veins pinnate in the lobes, those of the 

 barren fronds forming 1 — 2 rows of costal and constular areolae, those in the 

 fertile fronds anastomosing + as in Nephrodium, 5 — 6 on each side. Sori 

 medial on the veins; indusium small, fugacious. 



Philippines. 



(2) 1*. ex.cellciiis, ». A. V. R.; Nephrodium excellens, Hk., Hk. Bk., 

 Syn. Fil., 295; Aspidium excellens, BL, Enum., 160; C. Chr., lud. Fil. 



