AN ENUMERATION OP CULTIVATED FERNS. 149 
generally below its apex. Receptacles punctiform. Sori round. 
Indusium orbicular or subreniform. 
§ 1. Vernation fasciculate, caudex erect. 
(Polystichum verum.) 
* Fronds pinnate. 
1. P. acrostichoides, Schott. Aspidium 
acrostichoides, Sw. ; Lowe’s Ferns, 
6, 1. 19. Aspidium auriculatum, 
Sclik. Fil. t. 30. — North America. 
2. P. falcinellum, Presl. Aspidium falci- 
nellum, Sw.; Lowe’s Ferns, 6, t. 7. 
Hoolc. Fil. Exot. t. 53. — Madeira. 
3. P. mucronatum, Presl. Aspidium 
mueronatum, Sw. ; Schh. Fil. 
t. 29 B, C ; Hook. Sp. Fil. 4, 
t. 216.- — Jamaica. 
4. P. Lonchitis, Roth; Schott, Gen.Fil.t.9; 
Hindi, and Moore’s Brit. Ferns, 
t. 9 ; Sowerby’s Ferns, 1. 15. Poly- 
podium Lonchitis, Linn.; Eng. 
Bot.t.797. Aspidium Lonchitis, 
Sw. ; Schh. Fil. t. 29 ; Hoolc. 
Brit. Ferns, t. 9. — Europe, 
Britain. 
5. P. triangulum , Fee. Polypodium 
triangulum, Linn. (Plum. Fil. 
t. 72). Aspidium triangulum, 
Sw. ; Hook. Fil. Exot, t. 33. 
Aspidium trapezoides, Siv. As- 
pidium mucronatum, Lowe’s 
Ferns, 6, t. 31 B (non Sw.). 
Var. laxum, Lowe’s New Ferns, p. 143. — 
West Indies. 
6. P. obliquum, J. Sm. Aspidium obliquum, Bon, Aspidium 
casspitosum, Wall. ; Hoolc. Sp. Fil. 4, t. 213. — Nepal, 
Japan. 
** Fronds bipinnate. 
7. P. aculeatum, Roth; Hindi, and Moore’s Brit. Ferns, 
<.10; Sowerby’s Ferns, 1. 17. Polystichum aculeatum, 
Genus 74. — Portion of 
mature frond, under 
side. No. 11. 
