POLYPODIACE^E. 27 



The only species of this genus, so far as we are aware, that has 

 hitherto been described, is the S. aspidioides of Blume ; of which a 

 magnified figure of a portion of the pinnae is given in Presl's Tent. 

 Pteridographiae. The Sandwich Island plant differs from that of 

 Java in its stout and erect rootstock or trunk, in its larger fronds, and 

 its longer pinnae, with an intramarginal nerve combining the outer 

 venules, and in the almost sessile sporangia. 



Plate 4. — Fig. 2. Portion of the middle of a frond. 2 a, a. Sections 

 of a pinna, showing the sori. 2 b, b. Sporangia. The analyses more 

 or less magnified. 



9. MENISCIUM, Sclireb. 

 1. Meniscium reticulatum, Sw. 



Meniscium reticulatum, Sw. Syn. Fil. p. 19; Willd. Spec. PI. 5, p. 134. 

 M. sorhifolium, Langsd. & Fisch. Ic. Fil. p. 6, t. 4. 

 Lonchitis polypodioides, Velloz. Fl. Flum. 11, t. 100. 



Hab. Brazil; in marshes around Estrella, and near Botofogo, Rio 

 Janeiro; frequent. 



We consider this to differ from M. palv&tre, Eaddi, in its narrower 

 and alternate pinnae, with repand-crenate margins. 



10. GONIOPTERIS, Presl, J. Sm. 



(Polypodii Spec, Sw. & Auct.) 

 1. GONIOPTERIS VIVIPARA. 



Q, stipitibits glabris angulatis canaliculatis ; frondibus imparipinnatis ; 

 pinnis alternis lanceolatis acwminatis crenato-dentatis supra nitidis; 

 rhachi prolifera ; soi°is spar sis. 



Polypodium viviparum, Raddi, Plant. Brasil. p. 22, t. 32. 



