﻿n. F»OLYE»OI>ILJIVI, l.inni. 



Sori round, oblong or linear, many on each side, superficial or sunk in 

 cavities; the oblong ones often, the linear ones always dorsal, mostly oblique 

 to the costa and margin; the round and oblong ones dorsal, submarginal 

 or on marginal outgrowths, sometimes immersed in saccate, indusium-like de- 

 pressions of the margin, rarely covered by the raised edges of the cavities or 

 by long-stalked, peltate scales. No indusium. 



Rhizome creeping or erect. Stipes articulate to the rhizome, the articu- 

 lation not always visible in the smaller species. Fronds simple, pinnalifid or 

 pinnate, rarely more compoundly divided; surfaces naked, scaly or hairy, the 

 hairs not stellate; veins free or anastomosing variously. 



A very large genus, inhabiting principally the tropics. 



Arrangement of the sections and groups. 



§ 1. EUPOLYPODIUM (incl. Grammihs). Veins free. Sori superficial, or im- 

 mersed in dorsal or submarginal pits, but not as in § 2. Hk. Bk., Syn. 

 Fil., tab. V, fig. 48, a— b; Diels, in Engl. & Prantl. Nat. Pfl.Fam., P, 

 fig. 162. 

 a. Integrifolia^e. Fronds simple, the margin entire, crenate, repand 



or toothed. 

 h. !IFurca.(ae. Fronds typically forked, the brauches simple or forked 



again. 



c. Pinoatifidae. Fronds lobed or pinnatifid. {}) 



d. Pinnatae. Fronds + pinnate. (') 



e. Couipositae. Fronds at least 2-pinnatifid. 



§ 2. PROSAPTIA (incl. Acrosorus) Veins free. Sori terminal on the veins, 

 immersed in + marginal, saccate, indusium-like depressions or in adnate, 

 retroflexed portions of the margin. Fronds simple, crenate, lobed to pinna- 

 tifid, at best once pinnate. Diels, 1. c, fig. 115, G — H (under Davallia). (^) 



(^) The limit between c. PinnatiKdae and d, Pinnatae being not always dis- 

 tinctly marked, it will often be advisable to consult both groups. 



(') Regarding this section see the inlbrmation in Christ, Farnkr. d. Erde, 305 — Cope- 

 land thinks the section would better be ire.ited as 2 distinct genera, Prosaptia & Aero-* 

 sorus. Anyhow, the species of this group are no Davaliiae. 



