AN ENUMERATION OF CULTIVATED FERNS. 153 
or decumlient. Fronds varying from pinnatifid, bipinnatifid, to 
decompound-multifid, 1-6 feet high. Veins simple, or once or 
several times forked, or costaeform and pinnate ; venules free. 
Receptacles punctiform, terminal or medial. Sori round. In- 
dusium reniform or subrotund (as in figure), attached by its 
sinus on the interior side. 
* Vernation uniserial, sarmentose. (Thelypteris.) 
f Fronds lanceolate, bipinnatifid. 
1. L. palustris, J. Sm. Thelypteris palustris, Schott. Lastrea. 
Thelypteris, Fresl ; Lindl. and Moore's Brit. Ferns, 
t. 29 ; Hook. Gen. Fil. t. 45 A 2 ; Sowerby’s Ferns, 
t. 7. Polypodium Thelypteris, Linn. Aspidium 
Thelypteris, Sw.; S cl tic. Fil. t. 52 ; Eng. Bot. t. 1018. 
Nephrodium Thelypteris, Desv.; Hook. Brit. Ferns, 
t. 13. — Europe. 
2. L. Noveboraeensis, Fresl. Polypodium Noveboracense, 
Linn.; Schk. Fil. t. 46. Aspidium Thelypteroides, 
Sw . — North America. 
3. L. invisa, Fresl. Aspidium invisum, Sw. ; Schk. Fil. 1. 18. — 
West Indies. 
4. L. augescens, J. Sm. Aspidium augescens, Link ; Kunze, 
Fil. t. 59 ; Lowe's Ferns, 6, t. 10. Nephrodium 
Ottonianum, Kunze . — Tropical America. 
ft Fronds deltoid, decompound. 
5. L. decomposita, J. Sm. Nephrodium decompositum, 
R. Br. ; Hook. Fil. FI. Nov. Zel. t. 79 (exclus. name, 
glabellum). Aspidium decompositum, Spreng. ; 
Lowe's Ferns, 6, t. 33. — Australia, Tasmania, and 
New Zealand. 
6. L. velutina, J. Sm. Nephrodium (Lastrea) velutinum, 
Hook. Sp. Fil. 4, p. 145 ; Hook. Fil. Nov. Zel. t. 80. 
Aspidium velutinum, A. Rith — New Zealand. 
7. L. pubescens, Fresl. Polypodium pubescens, Linn. Ne- 
phrodium pubescens, Hook, et Grew. Ic. Fil. t. 62. — 
Jamaica. 
8. L. quinquangularis, J. Sm. Aspidium quinquangulare, 
Kunze. Aspidium pubescens, Lowe’s Ferns, 6, t. 25. — 
Native country unknown. 
