NOTEWORTHY LEJEUNEAE FROM FLORIDA 
Nees, are known from Florida. L. floridana agrees with L. glancescens 
in most of its vegetative characters, but is distinguished from it by its 
much larger bracts and bracteole, by the short keels of its perianth 
(projecting slightly upward as horns), and by the fact that the female 
branches are often long. These features will serve to separate the 
species also from L. cladogyna. L. flava is distinguished by its larger 
size, by its much larger underleaves (which are often imbricated), by 
the variable length of its female branches, and by its usually well- 
developed lobules of the Lejeunea type. 
3. Lejeunea longifissa Steph. 
Lejeunea longifissa Steph. Sp. Hepat. 5: 747. 1915. [Fig. 3.] 
On bark of trees. Florida: Sanford, March, 191 7, 5. Rapp 8j. 
Cuba: Monte Verde, February, 1859, C. Wright. The type material 
was collected in Cuba, no further data being given by Stephani. 
Since the type has not been available for comparison, the writer has 
been dependent upon the original description, which agrees in all 
essential respects with the specimens listed above. 
The plants are pale green and cling closely to the substratum, 
forming thin irregular mats. As in so many of the Lejeuneae the best 
development of the leaves is found on sterile branches, rather than on 
those bearing sexual organs. In the latter position the lobules of the 
leaves are often imperfectly formed, although they rarely show the 
extreme reduction found in L. cladogyna and L. minutiloha. On 
sterile branches the leaves are loosely arranged and sometimes do not 
overlap at all. The lobes are plane or nearly so and spread obliquely. 
They are broadly ovate and slightly falcate, measuring, according to 
Stephani, 0.67 x 0.4 mm. The Florida specimens do not attain these 
dimensions, the largest lobes being about 0.4x0.3 mm., but the 
Cuban specimens have lobes 0.3-0.6 mm. in length. The apex of 
the lobe varies from rounded to very bluntly pointed, while the 
margin is entire or vaguely sinuate. The lobule, when well developed, 
is strongly inflated throughout, broadly ovate in outline, and measures 
about 0.12 X o. I mm. The free margin is involute as far as the apical 
tooth, which consists of a single, slightly projecting, blunt cell, with 
the usual hyaline papilla on the proximal side. The leaf-cells have 
thin walls with distinct trigones and frequent intermediate thickenings. 
According to Stephani the marginal cells measure 18 /-t, the median 
27 /i, and the basal cells 45 x 27 /x, these measurements agreeing with 
those made by the writer. 
