150 
ALEXANDER W. EVANS 
probably referred to by Spruce when he speaks of "rami decurvi apice 
subaphyllo." They agree in all essential respects with those of P. 
heterophyllus. 
Two species of Brachiolejeunea are known from Florida at the 
present time, B. corticalis (Lehm. & Lindenb.) Schiffn.^^ and B. 
bahamensis Evans. Both usually bear perianths in abundance with 
*the subfloral innovations characteristic of the genus. They are both 
somewhat darker than the new Ptychocoleus, and are slightly more 
robust, their leaf-lobes measuring about 0.9 mm. in length. Further 
differences in the marginal teeth of the lobules may be noted. There 
are usually four of these teeth in B. corticalis and five in B. bahamensis, 
the teeth being only slightly inflexed, so that it is possible to flatten 
them out. In B. corticalis the teeth are relatively simple, but in 
B. bahamensis they are usually three or four cells in length and show 
considerable irregularity. 
Sheffield Scientific School, 
Yale University 
" See Evans. Mem. Torrey Club 8: 131. pi. 18, f. i-ii. 1902. 
12 Evans. Bull. Torrey Club 35: 383. pi. 28, f. 1-4. 1908. 
