515 606. DICTTOPTERIS. 



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

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

 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, 2 — 3 X ^s long as broad, simple, or joining 



at tbe base wben tbe veins fork; veins anastomosing as in Pleocnemia. 



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



§ 1. ARCYPTERIS. 



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



:ie.. Sori confined to the margins of the lobes. Venation as in Aspidium. 



(1) D. pteroides. 

 >(c.*. Sort placed in horseshoe-shaped arches, or vernation as in Campteria 



or Pleocnemia. (2) d. andaiensis. 



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

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

 base on the lower side. 



e. 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. 



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

 or more compoundly divided. 



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



$.$. Fronds 2-pinnatifid. 



^. Lateral pinnae 5—rl2 on each side. (7) D. saxicola. 



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

 Pleocnemia and Aspidium, from which it differs by the exindusiale sori only. 



