m 



Evans: Hepaticae from Florida 187 



Camp Longview (^Sviall & Carter ij^^ p. p^r^3^5 P^ p\ ^o. 

 ^355 m^y be designated the type. It is possible that the sterile 

 specimens collected by Underwood at Ocala, Florida, in January, 

 1 89 1, and distributed in Hep. Amer. iy8 (as Lejeunea serpyllifolid) 

 should be referred to this species, but they are in too poorly de- 

 veloped a condition for positive determination. 



One of the closest allies of L. Jlorida)ia\s L. qninqtteumbo)iata 

 Spruce,* which is known from the region of the Amazon. In 

 both species the perianths are five-keeled in the upper part only and 

 crenulate along the keels. Spruce refers his species to the sub- 



r 



genus Otigonio' Lejeunea but states that it approaches certain spe- 

 cies of Etc- Lejeunea and that it would not be unnatural to include 

 it among them. It agrees with typical species of Otigoniolejeunea 

 in its general habit, in its rather large perichaetial bracts, and in 

 the short keels of its perianth ; it differs from them, however, be- 

 cause the keels diO not project as long horns but merely as rounded 

 processes, and also because the perianth is distinctly beaked. In 

 the writer's opinion these differences are sufficient to remove the 

 species from Otigoniolejeunea and to place it in Lejeunea. In Z, 

 Jloridana the lobules are even smaller than in Z. qiiinqueiunbonata, 

 the lobes of the leaves are never pointed, and the margins of the 

 leaves and bracts are either entire or much less strongly crenulate. 



There are only two other species of Lejeunea known from 

 Florida ; one of these is the widely distributed Z. amerieana 

 (Lindb.) Evans; the other is noted below, Z. Jloridana differs 

 from Z. amerieana in its laxer habit, in its smaller lobules and 

 underleaves, and in the short and crenulate keels of its perianth. f 



In the texture of its leaves Z.yfi^nV/c?;^ bears some resem- 

 blance to poorly developed specimens of Cheilolejeunea phyllobola 

 (Nees & Mont.) Schiffn.,| with which it also agrees in its small 

 lobules and underleaves and in its autoicous inflorescence. The 

 Cheilolejeunea is a more compact species and its prostrate stems 

 are more closely appressed to the substratum ; it also exhibits a 

 tendency to develop flagelliform branches with caducous leaves. 

 Its deeply bifid underleaves, however, with sharply pointed divi- 



*Hep. Amaz. et And. 230. 1884. 



t Mem. Torrey Club 7 : 154. pi. 20, f. 14-36. 1902 



X See Evans, Mem. Torrey Club 7 : 143. 1902, 



