﻿772 93. OPHIOGLOSSUM. 



Arrangement of the sections. 



§1. EU-OPHIOGLOSSUM. Fertile spike single, mostly simple, rarely 2—3- 

 partite, arising from the base of the barren segment, which is sometimes 

 wanting or rudimentary. Rhizome naked, hypogeous. Hk. Bk., Syn. Pil., 

 tab. IX, fig. 73; Diels, in Engl. & Prantl, Nat. Pfl.Fam., I*, fig. 259, 

 A & C. 



§2. OPHIODERMA. Fertile spike as in § 1, but arising from the centre of 

 the barren segment. Rhizome papillose, epiphytical. Diels, 1. c, fig. 265, A. 



§ 3. CHEiROGLOSSA. Fertile spikes many or numerous, springing from the 

 base and margin of the barren segment. Rhizome long-hairy, epiphyti- 

 cal. Diels, 1. c, fig. 263, B— C. (Not in Malaya). 



§ I. EU-OPHIGGLOSSUM. 



a. Barren segment wanting or rudimentary. (l) 0. simplex. 



a.a. Barren segment distinctly developed. 



h. Barren segment linear or linear-lanceolate, more than 5 \ as long as broad. 



X. Fronds + 4\ c.M. high, the barren segment i — i^a ^-M- long, 



i — 2 m.M. broad. (2) 0. gramineum. 



x.x. Fronds 7 — 20 c.M. high, the barren segment + i'/i — ^ ^•^• 



long, 2—6 m.M. broad. (3) 0. inconspicuum. 



b.b. Barren segment lanceolate or oblong, less than 5 X '^•^ ^ong as broad. 



c. Barren segment cuneate at the base. 



d. Barren segment small, mostly '/^ — d c.M. long. 



§. Barren segment roundish, nearly as broad as long. 



(4) 0. pumilum. 

 $.$. Barren segment elongate, ± ^2 X <^s broad as long. 



(5) 0. macrorrhizum. 

 d.d. Barren segment '^larger, mostly i — 5 c.M. long. 



e. Barren segment placed quite at the base of the whole 

 frond. (6) 0. fibrosum. 



e.e. Barren segment placed above the base of the frond. 

 f. Veins indistinct. 



+. The whole plant 5 — dO c.M. high, with the 



• barren segment ± ovale, broadest at or below 



the middle. (7) 0. parvifolium. 



