AN ENUMERATION OF CULTIVATED FEUNS. 153 



or decumbent. 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 subrotimd (as in figure), attached by>its 

 sinus on the interior side. 



* Vernation uniserial, sarmmtose. (Thelypteris.) 

 f Fronds lanceolate, bipinnatifid. 



1. L. palustris, /. Sm. Thelypteris palustris, Sclwtt. Lastr< 



Thelypteris, Presl ; Idndl. and Moore's Brit. Fern 

 t. 29 ; Hook. Gen. Fil. t. 45 A 2 ; Sowerby's Ferns, 

 t. 7. Polypodium Thelypteris, Linn. Aspidinm 

 Thelypteris, Sw.; Schk. Fil. t. 52 ; Fng. Bot. t. 1018. 

 Nephrodium Thelypteris, Desv.; Hook. Brit. Ferns, 

 t. 13. — Europe. 



2. L. Noveboracensis, Presl. Polypodium Noveboracense, 



Linn.; a - 7 ' 7 - ™ n J 46. Aspidium Thelypteroides, 



Sw.—B 



3. L. invisa, Pre invisum, Sw. ; Bclik. Fil. 1. 18.— 



West Inuiea. 



4. L. augescens, J. 8m. Aspidium angescens, Link ; Kunze, 



Fil. t. 59; Lowe's Ferns, 6, t. 10. Nephrodium 

 Ottonianum, Kunze. — Tropical America. 



tt Fronds deltoid, decompound. 



5. L. deeouiposita, J. 8m. Nephrodium decompositum, 



B. Br. ; Hook. Fil. Fl. Nov. Zel. t. 79 {exclus. name, 

 glabellum). Aspidium decompositum, Spreng. ; 

 Lowe's Ferns, 6, t. 33. — Australia, Tasmania, and 

 New Zealand. 



6. L. velutina, /. 8m. Nephrodium (Lastrea) velutinum, 



Hook. Sp. Fil. 4, p. 145 ; Hook. Fil. Nov. Zel. t. 80. 

 Aspidiam velutinum, A. Eiih — New Zealand. 



7. L. pubescens, Presl. Polypodium pubescens, Linn. Ne- 



phrodium pubescens, Hook, et Griv. la. Fil. t. 62. — 

 Jamaica. 



8. L. quinquangularis, J. 8m. Aspidium quinquangulare, 



Kunze. Aspidium pubescens, Lowe's Fei-ns, 6, t. 25. — 

 Native country unknown. 



