23G 



FERNS I BRITISH AND FOREIGN. 



1-2| feet l n g' Veins pinnate; venules free. Receptacles 

 punctiform, terminal. Sori exserted. Special and accessory 

 indusia conniving, and forming a calyciform, pedicellate, vertical 

 extrorse cyst. 



1. D. prolifera, Hook, et Grev. Ic. Fil. (corrig.) ; Hook. Gen. 

 Fil. t.U B; Hook. Fil. Exot. t. 82; Lowe's Ferns, 8, 

 t. 38. Dicksonia prolifera, Kaulf. Deparia Macra3i, 

 Hook, et Grev. Ic. Fil. 1. 154. Sandwich Islands. 



125. SITOLOBIUM, Vesv. 



Vernation uniserial and sarmentose. Fronds bi-tripinnatifid, 

 2-6 feet high. Veins simple or pin- 

 nately forked, the exterior venule, or 

 more, soriferous. Receptacles punc- 

 tiform, terminal. Sori globose, re- 

 flexed. Special and accessory indusia 

 united and forming a reflexed, entire, 

 or cub-bilabiate cup. 



1. S. punctilobum, J. 8m. Ne- 



phrodium punctilobulum, 

 Michx. Aspidium punctilo- 

 bulum,$M7. Dicksonia punc- 

 tiloba, Hook.; Lowe's 

 Ferns, 8, t. 42. Dicksonia 

 pubescens,/SM&. Fil. 1. 131. 

 Dicksonia pilosiuscula, 

 Willd. Sitolobium pilo- 

 siusculum, Desv. ; J. Sm. 

 Gen. Fil. Dennstsedtia 

 punctilobula, Moore. 

 North America. 



2. S. adiantoides, /. Sm. Dick- 



sonia adiantoides, Humb. ; 

 Hook. Sp. Fil. t. 26 B. 

 Polypodium globuliferum, 

 Poir (Plum. Fil. t. 30). 

 Genus 125. Portion of fertile Dennstaedtia adiantoides, 



irond, under side. NO. 2. Moore. Tropical America. 



