﻿776 95. OPHIOGLOSSDM. § 1. EU-OPHIOGLOSSUM. 



6 — 25 c.M. high. Barren segment placed (often considerably) below the middle, 

 ovate, lanceolate, oval or rarely subrhomboidal, + 1 '/^ — 9 c.M long, ± 

 1 — 4 c.M. broad, sessile or with a haft, the broadest part below the middle, 

 the base broadly cuneate, rounded or subtruncate, rarely + cordate, the 

 apex obtuse or subacute, whether or not apiculate, the marginal cells with 

 the outer wall convex. Texture flaccid or subcarnose, thin when dry; veins 

 distinct; costa flexuose, somewhat stouter near the base, often indistinct to- 

 wards the apex. Fertile spike with the peduncle to + 3 X longer than the 

 barren segment. 



l^ar. lanceolatum : Whole plant 10—18 c.M. high. Barren seg- 

 ment lanceolate, 3 — 4 c.M. long, to 1 c.M. broad, placed a little below the 



middle, acute at both ends; marginal cells ?; peduncle ± 3 — 5 c.M. 



long. 



Trop. Asia, Australia, New Zealand, New Caledonia, Japan; — var. lan- 

 ceolatum: Java. 



• (11) O. reticulaluiii, i., Hk. Bk., Syn. Fil., 446; Prantl, 0- 

 phiogl, 330, tab. VIII, fig. 32; Bedd., Ferns S.I., tab. LXX; Hk. & Grev., Ic. 

 Fil., tab. XX; Christ, Farnkr. d. Erde, fig. 1137. 



Rhizome not tuberous. Fronds 1 — 1, the whole plant 10—30 c.M. high. 

 Barren segment placed at or sometimes considerably below the middle, 2 — 8 

 c.M. long, 1 ^2 — 7 c.M. broad, with a haft, oblong, rarely reniform, the apex 

 obtuse, often rounded, rarely subacute, often apiculate, the base cordate, ra- 

 lely subtruncate, the margin quite continuous, i. e. the marginal cells with 

 the outer wall straight. Texture mostly thin, rarely rigid; veins distinct, the 

 midrib somewhat stouter near the base, flexuose, becoming finer towards the 

 apex. Fertile spike ± S'/j — 4 c.M. long, on a slender peduncle often 3X 

 as long as the barren segment. 



Pantropical. 



% ± OPHIODERMA. 



Fronds erect, iO — 20 c.M. long. (12) 0. intermedium. 



-.Fronds pendulous, 30 — i50 c.M. long. (13) 0. pendulum. 



* (12) O. interniediuiM, Hfc., Hk. Bk., Syn. Fil., 446; Hk., Icon 

 PL, X, tab. CMXCV. 



