454 93. OPHIOGLOSSUM. § 1. EU-OPHIOGLOSSUM. 



apiculate. Texture flaccid; costa very slender, disappearing towards the 

 apex;. veins fine; marginal cells straight. Fertile spikes 2 — 15 mm. long, 

 with the peduncle to + S'/j cm. long. 

 Java. 



(4a) O. Schlechtefi, Bt-uu., in Lautb., Beitr. Flor. Pap., I, 

 58, fig. 3 E. 



Rhizome cyhndrical. Whole plant 2 — 5 '/o cm. high. Fronds 1 — 2. Barren 

 segment often placed a little above the middle, ovate or cordate from a 

 short, broadly cuneate base, 3 — 4 mm. long, 2 — 3'/2 mm. broad, entire 

 or slightly crenate. Texture fleshy ; veins hidden ; costa indistinct towards 

 the apex. Fertile spike with the penduncle dilated gradually from the 

 base to the sporangiferous region which is + 1^/4 mm. broad. 



New Guinea. 



% 2. OPHIODERMA. 



(12a) O. lloultoni, Copel., in Journ. Str. Br. R. A. Soc, LXIII, 72. 



Fronds lanceolate, 25 — 30 cm. long, 5 cm. broad, narrowed gradually 

 towards both ends, the stipe about as long as the frond, winged. Fertile 

 spike to 10 cm. long, shortly pedunculate. 



Borneo. 



(126) See also No. 13. 



(13) O. pendulum, £. 



Stipes commonly flattened when dry, with thin fronds. 



A form gathered in Neio Guinea (forma nutans) has the fronds rather 

 short, spreading, falcate (nutant), and a form cultivated in the Buitenzorg 

 Gardens (forma angustata) differs from the type in having the fronds or 

 the fork-branches very narrow, at best 1 cm. broad. 



OS. BOTK.YCHIUM, Stcm-ts. 



% 2. PHYLLOTRICHUM. 



(1) B. daucifoliuni, Wall.} — var. parvum, v. A. v. R., in 



Bull. Btz., 1911, I, 3. 



