part of frond simi 



BOTANY OF BIHAR AND ORISS 

 hambered synangia. Stipu 



I on the veins, 



,,t (consisting i 



often few in the sori or not 



Lndusium or 

 or incomple 

 (vertical and c 

 i. Sporangia not 



ifinite growth, scande: 





. Sporangia verv i* '", ', " 1V "' . 



Annulus equatorial or oblique. Rhizome widely creeping. 



Fam. (tleichenwcerc (]>• 1210). 



ws^nd covered & by the re volute leaf margi 

 h dimorphic 



. 1210).* 

 . Sporangia stalked, in well-marked sori or continuous ™^; ™|J 

 complete oblique or vertical annulus. Indusmm present 



Tree fe°rns. ^Sporangia opening more or less transversely with 

 complete oHiqm " (,r su " ™„r 



by a cupular involucre \ 



Dwarf ferns. Sporangia very numerous in the son, with a er ca 



membranous when present, rarely herbaceous, f 



Fain. /'- /. ■• V ll83 ' 



B. Heterosporous 1 

 Order IV.— Hydropteride^. Water ferns. . 



Floating or marsh plants. Leptosporangiate. Sporangia i 

 tained in capsules or sporocarps derived from nui 



or on a pedicel springing from the petiole. Spores c 

 microspores and macrospores 



Annual floatin 



'(.,,.,., long-pctioled j 

 q. Marsiliacece (p. 1217)- 



• sporocarps i 



i rudimentary and 

 ; attached to the s 



th simple leaves. 



Fam. Salviniacev (p. 1216). 

 Marsh plants with creeping i 



Probably a very pnmitr 



