252 



F I L I C E S. 



although their plant is much larger than ours, and the receptacle 

 more exserted. The latter, however, is not a reliable character, parti- 

 cularly in dried specimens, and the size of the plant is influenced more 

 or less by the nature of the locality. 



7. Trichomanes Filicula, Bory. 



Trichomanes Filicula, Bory, in Duperrey, Voy. 1, p. 283 ; Hook. & Am. Bot. Beech. 



Voy. p. 76; Hook. Spec. Fil. 1, p. 124. 

 Hymenophyllum Filicula, Willd. Spec. PI. 5, p. 528. 



Hab. Tahiti, Society Islands. Samoan and Feejee Islands: on 

 rocks, dead wood, and the trunks of trees ; frequent. 



Willdenow certainly was not far wrong in referring this to Hymeno- 

 pliyllum, and we consider its claims as good to remain in that genus 

 as in TricJiomanes. The very evident two-lipped indusium, with a 

 receptacle in most cases included, indeed very seldom exserted, ally 

 it to Hymenopliylhim ; while on the other hand, its aspect and the 

 narrow cylindrical indusium, tapering at the base, refer it to the 

 present genus. 



8. Trichomanes humile, Forst. 



Trichomanes humile, Forst. ex Sw. Syn. Fil. p. 143 & 371; Willd. Spec. PI. 5, p. 

 507; Hook. & Grev. Ic. Fil. t. 85; Hook. & Am. Bot. Beech. Voy. p. 76; Hook. 

 Spec. Fil. 1, p. 123. 



Hab. Tahiti, Society Islands, and Feejee Islands; frequent. 



9. Trichomanes Draytonianum, Sp. Nov. (Tab. 36.) 



T. rhizomate repente pubescente; stijrite brevi compresso; frondibus lato- 

 lanceolatis glabris bipinnatifidis ; pinnis primariis rhambcrideo-ovatis ; 

 laeiniis brevibus siiboblongis obtusis simplicibus seu blfidis; indubio 

 supra-axillari cylindraceo basi attenuate ad medium usque immerso, 

 ore patente; receptaculo filiform i indusium fere bis superante. 



