Hepaficw] MEXICO. 313 



pierumque bifid is, soris longitudinalibus 1-2 prope marginem iuferiorem, rachide (ater- 

 rima nitida) facie inferiore concaviuscula alato-marginata, dorso semicvlindrico. (Tab. 

 LXXI.) 



A very nearly allied species to this, if not the same, differing only in the more acuminated pinnae, is No. 

 1-287 of Mr Cuming's collection from Columbia. In our Mexican specimens, probably from not being sub- 

 mitted to pressure when freshly gathered, the raehis is incurved, and all the pinnae refracted, so that they all 

 point to one side. The fructifications are so sunk into the frond, as to give a tuberculated appearance to the 

 anterior surface. 



Tab. LXXI. Fig. 1. Anterior, and fig. 2. posterior view of a fertile pinna: — magnified. 



1. Woodward ia radicans. Sw. 



I. Blechnum occidentale. L. 



Ord. LXXXVIII. HEPATICJ3. 



1. Fimbriaria tenella. Nees ab Esenb. llor. Phys. Berol. p. 45. Bischoff, Leber moose., 

 in Act. Acad. Nat. Cur. v. 17. P. II. p. 1022. t. 69. /. 2.— IIab. Talisco. 



