AN ENUMERATION OF CULTIVATED FERNS. 



75 



2. HUMATA, Cav. 



Rhizome surculose, slender, squamiferous. Fronds linear- 

 lanceolate, entire, sinuose, pinnatifid or 

 deltoid bipinnatifid, smooth, coriaceous. 

 Veins simple or forked ; venules free, 

 often thickened and clavate. Receptacles 

 terminal, punctiform, on all or only on 

 the anterior venules of each fascicle. 

 Sori marginal or anti-marginal. Indu- 

 sium sub-rotund or reniform, coriaceous, Genus 2. Portion of fertile 

 interiorly attached by its base only, fond-under We. No. i. 

 shorter or equal with the margin, and forming with it a bila- 

 biate vertical or sometimes oblique cyst. 



1. H. heterophylla, J. 8m. ; Hook, et Bauer, Gen. Fil. 1. 114. 



Humata ophioglossa, Cav. Humata pinnatifida, Cav. 

 Davallia heterophylla, Hook, et Grev.Ic. Fil t. 230; 

 Hook. Fil. Exot. t. 27 ; Lowe's Ferns, 8, 1 19 ; Hook. 

 Sp.Fil. I,/. 152. Malayan Archipelago. 



2. H. pedata, /. Sm. Davallia pedata, 8m. ; Hook. Sp. Fil. 1, 



t. 45 A; Hook. Gard. Ferns, t. 7. Pachypleura 

 pedata, Presl. Malayan Archipelago. 



3. H. Cumingii, J. Sm. Davallia Cumingii, Hook. Sp. Fil. 



1, t. 45 B. Philippine Islands, Ceylon. 



3. DAVALLIA, Sm. 



Rhizome surculose creeping, or sub-erect and sub-frutescent 

 Fronds generally 

 deltoid, pinnate, 

 bi-tripinnate, or 

 multifid, smooth, ,. 

 often coriaceous. 

 Veins forked; 

 venules free, the 

 fertile ones often 

 very short. Re- Genus 3. Pinnule of fertile frond under side. No. 7. 

 ceptacles puncti- 

 form, terminal. Sori sub-rotund or vertically oblong, marginal. 

 Indusium scariose, its sides adnate, forming an urceolate or 

 tubular vertical cyst, open exteriorly. 



