﻿7o6 88. osMUNDA. 



§ 1. PLENASIUM. 



• (1) €>. javaiiica, Bl., Rac, Flor. Btz., I, 5; Bedd. Ferns S.I., 

 tab. LXXVII; 0. Bnnlcsiaefolia, Kuhn, Ann. Mus. Bol. L. B., IV, 299; 0. Pres- 

 liana, J. Sm., Diels, in Engl. & Pranll, Nat. Pfl.Fam., I*, fig. 205, A; 0, bro- 

 meliaefolia, CopeL, Philipp. Journ., II, 147. 



Caudex stout, erect, 30 — 50 c.M. high, 10 — 20 c.M. or more thick. 

 Stipes 15 — 30 c.M. long, erect, firm, naked. Fronds to 3 M. long, 50—60 

 c.M. broad, simply pinnate, the lower or central pinnae fertile. Barren pin- 

 nae erecto-patent, 2 — ^% c.M. broad, lanceolate, the point acute, the edge 

 entire, crenate, serrulate or toothed, the base cuneate. Texture coriaceous; 

 rachis and surfaces naked; veins distinct, pinnale, subspreadiiig (erecto-palent 

 in 0. Banksiaefolia, Kithn). 



Trop. Asia, Japan, Kamschalka. 



(2) O. blechnoideis, Zolh, Syst. Verz., 49. 



Very near 0. javanica, BL, but broader and thicker. — A dubious species. 



Java. 



SO. LEPTTOPTER^IS, J»re*I. 



Sori roundish-oblong, dorsal, occupying the lower part of the veins. 



Fronds at least 2-pinnate, thinly membranaceous (+ as in Hymenophyl- 

 lum); pinnae not articulate to the rachis, the fertile ones not contracted; 

 veins free. Diels, in Engl, k Prantl, Nat. Pfl.Fam., P, fig. 204, B— C. 



Almost confined to the south temperate zone. 



^. Fronds 2-pinnate. Pinnulae deeply toothed. (1) L. Wilkesiana. 



■Jf .-:}(:. Fronds 3-pimiali/id. Tertiary segments entire. (^) !<• alpina. 



(1) Ei. l¥ilkesiaiia, Christy Farukv. d. Erde, 534; Todea Wilke- 

 siana, Brack., Wilk., Expl. Exp., XVI, tab. XLIII; T. Fraseri, Hk. & Grev., 

 var. Wilkesiana, Hk. Bk,, Syn. Pil., 427. 



Caudex erect, arborescent, to 2 — 3 M. high. Stipes 15 — 25 c.M. long, 

 firm, naked. Fronds 1—2 M. long, 50—80 c.M. broad, ovate, 2-pinnate. Pin- 



