NOTEWORTHY LEJEUNEAE FROM FLORIDA 
The inflorescence is autoicous, as in all the other species of Lejeunea 
known from the United States. The female inflorescence is sometimes 
borne on a short branch and sometimes on a more or less elongated 
branch. It innovates on one side and occasionally ■ on both, the 
innovations being sometimes short and sterile, sometimes again florif- 
erous. The bracts are exceedingly variable. The lobe of the outer 
bract is usually broad and blunt, the margin varying from entire to 
coarsely and irregularly sinuate or toothed. The lobe of the inner 
bract is usually narrow and sharper. The lobule of the outer bract 
is also blunt in most cases and often shows two indistinct teeth at the 
apex; the lobule of the inner bract is usually slender and long-pointed. 
Unfortunately these differences between the bracts are not always 
apparent. The bracteole is slightly connate on both sides; it is 
deeply bifid with a narrow sinus and slender, long-pointed divisions, 
and the margin is sometimes sparingly and irregularly toothed. The 
perianth is obovoid and distinctly five-keeled, the dorsal keel being 
shorter than the two ventral. The keels are crenulate and sometimes 
show very narrow and interrupted wings. The apex of the perianth 
is rounded or truncate and the beak is distinct. The measurements of 
the involucral leaves and perianths which Stephani gives are somewhat 
higher than those made by the writer. According to him the lobes 
of the bracts measure 0.9 x 0.45 mm. while the perianth is said to 
be 1.25 mm. long and 0.67 mm. wide. In the writer's experience the 
lobes of the bracts measure 0.35-0.7 x 0.22-0.35 mm., and the perianth 
0.5-0.9 X 0.35-0.5 mm. Stephani speaks of the perianth as being 
''quasi pedunculata," so that his measurements were evidently made 
from plants which had passed maturity. In view of the great vari- 
ation in size exhibited by the bracts and perianths, the discrepancies 
just noted hardly seem suflicient to warrant a specific separation. The 
male spikes vary in position and in length and apparently never pro- 
liferate. They sometimes occupy short branches and sometimes 
terminate long branches, and the bracts are mostly in two to six pairs. 
The antheridia are borne singly or in pairs. 
Perhaps the most striking features of L. longifissa are the deeply 
bifid underleaves, from which it receives its specific name, and the 
variable perichaetial bracts, some of which at least have sharp- 
pointed and coarsely toothed lobes. In all the other species of 
Lejeunea known from Florida the lobes of the bracts are either rounded 
or very bluntly pointed, while their margins are entire or vaguely 
