AN ENUMEEATION OP CULTIVATED PEENS. 209 



flexuose, climbing to an indefinite height ; pinnae 1-2 feet long, 

 adherent. Veins forked; venules combined by a transverse 

 marginal vein, and in the fertile also near their base by a 

 transverse, continuous, -sporangiferous receptacle, forming a 

 linear costal sorus. Indusium revolute, vaulted, cylindrical, 

 sporangiferous along its base. 



1. S. voiubile, J. ' 8m. m Hook. Gen. Fil. t. 93. Bleclmum 

 volnbUe, Kcuidf. ; Kimze, Anal. t. 13 ; Hook. Oard. 

 Ferns, 1. 15. Blechnum scandens, Bory, in Dup. Voy. 

 t. 36.— Tropical America. ' 



Tjiibe IX.-ASPLENIEJE. 



Sari oblong or linear, oblique to the midrib or axis of vena- 

 tion, !Pumished with a plane or vaulted lateral inclMsiwm. 



110. ASPLENIUM, Linn. 



Vernation fasciculate, erect or decumbent, rarely uniserial 

 sarmentose. Fronds varying from simple-entire to decompound 

 and from a few inches to 2-6 feet high, generally smooth 

 Feiras rayed, forked, or pinnate ; venules free, sporangiferous on 

 the superior side.,- Sori simple, oblong, or linear. Indusium 

 plane or vaulted. 



§ 1. AsPLENiuM VEiiUM. — Indusiwm plane, 



1. Lancevm, group. 



Vernation vmserial, sarmentum slender. Fronds distant, 

 luiea/r-lanceolate, 1—1^ foot long. Sori simple, anti or opposite 

 linate. (Triblemma.) 



1. A. lanceum, Thanh. le, Flamt. Jap. Bee, 11, t. 18. A. subsi- 



nuatiim, Hooh. et Qrev. Ic. Fil, t. 27. Diplazium lan- 

 ceum, Fresl. Scolopendrium dubiuin, Bon. — IiiiJia, 

 China, Japan. 



% Serratum group. 



Vernation fascicndate, erect. Fronds simple, hroad, elUptical, 

 ch\ lariceolate, l-2feet long. (Phyllitis.) 



2. A. serratum, Linn. IPlwm. Fil. t. 124) ; Sclik. Fil. t. 64 ; 



Sook. Fil. Exot. t. 70.— Tropical America. 

 P 



