Evans : Hepaticae from Florida 189 



The specific name decidtia refers to the fact that the leaves on 

 some of the branches exhibit a strong tendency to break off. They 

 are set free by a tearing across of the lobe near the lobule, some- 

 times leaving a complete water-sac behind, sometimes tearing 

 away a portion of its wall ; in any case the lobule is left intact. 

 In general appearance the species bears much resemblance to two 

 other Lejetineae which have also been found in Florida ; namely, 

 C. phyllobola and C. versifolia (Gottsche) Schiffn.* Both of these 

 species are pale in color and both develop flagelliform branches 

 from which the leaves fall away, leaving nothing except the 



underleaves behind. 



phyllobola 



long and pointed apical teeth of its lobules, in its dioicous inflores- 

 cence, and in its usual lack of a subfloral innovation. It differs 

 from C. versifolia in its much larger leaf-cells, none of which 

 develop into ocelli, and in its cell-walls, which show distinct tri- 

 gones instead of being uniformly thickened. 



8. 



Zeratolejeunea cubensis (Mont.) i 

 Nat. Pflanzenfam. i"* : 125. 1893. 



Mont 



Hi 



//, 18, f, 2. 1845. 



Colitra ctibensis Trevls. Mem. R. 1st. Lomb. III. 4: 402. 1877. 

 Lejeunea [Cerato-Lejetined) cubensis Spruce, Hep. Amaz. et And. 



202. 1884. 



In hammocks near the homestead trail, between Cutler and 

 Camp Longview (^Small & Carter 1355 p. /., 1431 J Small & 

 Wilson 1^2 f)^ and in the vicinity of Silver Palm School {Small 

 2J4g). Widely distributed in tropical America. 



Although C. ctibensis has bifid underleaves and consequently 

 belongs to the Lejetineae Schizostipae ^ it cannot be confused with 

 any of the other members of this group known from the United 

 States. The most striking of the differential characters which it 

 presents are the following : the deep olive-green or olive-brown 

 color due to the pigmentation of the cell -walls, the more or less 

 pointed lobes irregularly toothed in the apical region, the thick- 

 walled leaf-cells with distinct middle lamella, and the four-horned 

 perianth. Most of these characters are of course generic in value. 



*See Evans, Mem. Torrey Club 7 : 145. 1902. 



