NOTEWORTHY LEJEUNEAE FROM FLORIDA 



143 



The closest known relative of E. parvula is E. duriuscula (Nees) 

 Evans, another species on the border line between Cheilolejeunea and 

 Euosmolejeunea. E. duriuscula is widely distributed in tropical and 

 subtropical America and occurs abundantly in Florida. It is only a 



Fig. 4. Euosmolejeunea parvula Evans 

 A. Part of a plant with perianth and male inflorescence, ventral view, X 50. 

 B. Apex of lobule, showing distal hyaline papilla, X 300. C. Apex of another 

 lobule, papilla not shown, X 225. D. Apex of an underleaf-division, X 225. E-G. 

 Bracts and bracteole from a single involucre, X 50. H, I. Bract and bracteole from 

 another involucre, X 50. /. Transverse section of a perianth in upper third, X 50. 

 The figures were all drawn from the type specimen. 



trifle larger than E. parvula, the lobes of its leaves measuring about 

 0.4 X 0.35 mm., the lobules in the two species are much like the apical 

 tooth, being very short in both, the underleaves and leaves are very 

 similar, and the perianths, except for a slight difference in size, agree 

 closely. E. duriuscula, however, is a yellowish plant of a firmer tex- 

 ture, the leaf-cells have larger and more distinct trigones, the female 



