POLYP ODIA.CE.ffi, 273 



■80. SIT0LOBIUM, Desv., J. Sm. 



.(DiOKSONiiE Spec. Sw. & Auct. Culcita Spec. Presl. Patania, Presl.) 



1. SlTOLOBIUM DUBIUM. 



Davallia dubia., R. Br. Prodr. Fl. Nov. Holl. p. 157. 



Dkksonia dubia, Gaud. Bot. Freyc. Voy. p. 367; Hook. Spec. Fil. 1, p. 71, t. 24, C. 



Balantium Brownianum, Presl, Tent. Pterid. p. 134, t. 5, f. 4. 



Hab. Vicinity of Port Jackson, New South Wales. 



We have failed to make out such an evident accessory indusium 

 .as that shown by Presl in his Tentatnen Pteridographiae. Our plant 

 may not be fully developed in all its parts; yet the form of the 

 indusium is precisely that figured by Hooker in his Species Filicum. 

 But setting aside the ill-defined accessory indusium, which consists of 

 the scarcely changed lobule or tooth of the frond, the habit of the 

 plant harmonizes with the present genus, 



;2. SlTOLOBIUM STRAMINEUM. 

 Dicksonia straminea, Labill. Sert. Austr. Cal. p. 7, t. 10; Hook. Spec. Fil. 1, p. 71. 



Hab. Somu Somu, Feejee Islands. 



This differs but little from the preceding species, and is only to be 

 distinguished by its larger fronds, which are smooth on the upper 

 surface, and by its larger special indusium, the upper or accessory one 

 formed by a more evident changed and reflexed lobule or tooth of the 

 frond. 



3. SlTOLOBIUM ADIANTOIDES, J. Sm. 



mtolobium adiantoides, J. Sm. in Lond. Jour. Bot. 1, p. 434. 



69 



