﻿512 606. DICTYOPTERIS, 



mosing more or less copiously, commonly irregularly, but never as inNepbro- 

 dium. (Aspidium, p. p., C. Chr., Ind. Fil.). (*) 

 Tropical. 



Arrangement of the sections. 



§ 1. ARCYPTERIS. Sori round or suboblong; veins anastomosing generally as 



in Aspidium, rarely as in Campteria or Pleocnemia. Hk. Bk., Syn. 



Fil., tab. V, fig. 48, o (as Dictyopteris). 

 §2. DIGRAMMARIA. Sori oblong, 1 — 3 X os long as broad, simple, or joining 



at the base when the veins fork; veins anastomosing as in Pleocnemia. 



Bau. k Hk., Gen. Fil., tab. XCIV, fig. 1—4 (as Stenosemia). 



§ 1. ARCYPTERIS. , 



a. Sori marginal or nearly so, or placed in arches within the margin, 



)tc. Sori confined lo the margins of the lobes. Venation as in Aspidium. 



(1) D. pteroides. 

 ;tc.^. Son placed in horseshoe-shaped arches. Venation as in Campteria. 



(2) D. andaiensis. 

 «.«. Sori placed in rows parallel to the main veins or costulae. 



h. Fronds 3 — 5-jid or pinnate, hut then the lowest pinnae forked at the 

 base on the lower side. 



c. Stipes winged. (3) D. Bryanti. 



c.c. Stipes not winged. 



d. Included free veinlets few or wanting. 



' (4) D. subdecurrens. 



d.d. Included free veinlets copious. (5) D. Barberi. 



b.b. Fronds deeply pinnalifid or pinnate, but then the lower pinnae pinnatifid 

 or more compoimdly divided. 



§. Fronds pinnatifid. (6) D. Beccariana. 



§.§. Fronds 2-pinnatifid. 



^. Lateral pinnae 5 — 12 on each side. (7) D. saxicola. 



(*) See the note under Plicgopteris. The natural place of this genus is near 

 Pleocnemia and Aspidium, from vv'hich it ditfers by the exindusiale sori only. 



