182 Evans: Hepaticae from Florida 



tamariscina is smaller and more irregularly branched than the 

 Florida species, but agrees with it in being without a subfloral in- 

 novation. The leaves of /I tamariscina are relatively broader and 

 their marginal teeth, although smaller, are usually more numer- 

 ous. The leaf-cells are variable ; in typical cases the walls are 

 uniformly thickened through the coalescence of trigones, but in 

 some cases the trigones are distinct, and in still others the walls 

 are thin throughout. In P. tenuis the 9 inflorescence bears a 

 subfloral innovation which is itself often floriferous ; the leaves 

 have fewer teeth than in P, Smallii^ and the leaf-cells have larger 

 and more frequently confluent trigones, which are especially con- 

 spicuous in the perianth and bracts. 



2. LoFHocoLEA Martiana Nees, in G. L. & N. Syn. Hep. 152. 

 1845- 



t 



Jtingermannia connata Nees, in Martius, Fl. Bras, i^ ; 332. 1833 ; 

 Jc. Plant. Crypt ^2. pL //, /. 2, 1828-1834. V<oX. J2inger- 

 viannia connata Svvartz, Prodr. Fl. Ind. Occid. 143, 1788 

 Lophocolea' connata Swartz & Nees, in G, L. & N. Syn. 



Hep. 153. 1845). 

 Blanton iL. M. Un 



M 



(Small & Nash ^80). In the hammocks near the homestead trail, 



between ( 



iphocotea Mat 



(Small & Carter IJJS /• /•» 

 d in the American tropics, 

 cribed by Nees von Esen- 



beck in the Synopsis Hcpaticarum, and also, more recently, by 

 Spruce.* Both descriptions are drawn from robust and typical 

 specimens and give an excellent idea of the plant as it usually ap- 

 pears. In some respects, however, the species is more variable 

 than these descriptions would indicate. The leaves, for example, 

 are approximately rather than truly opposite. At their antical 

 bases they never quite correspond and are consequently never 

 connate ; at their postical bases they are either connate with the 

 corresponding quadrifid underleaf or are connected with it by 

 means of short and narrow wungs ; in this region the leaves are in 

 some cases exactly opposite ; but in other cases one of the two 

 leaves will be much farther away from the underleaf than the 



*Hep. Amaz. et And. 430. 1885, 



