220 THE JOURNAL OF BOTANY 
Fascicles of 8-4 branches, of which the stronger ones are some- 
times long and very thin at the extremity, sometimes shorter and 
more shortly acuminate. Branches a or closer together ; 
sometimes very densely arranged; either drepanocladous, ano- 
cladous, or Bo cae Branch-leaves small, when dry almost 
X; margin apex inrolled; border of 3-4 rows of n 
calles the leaf has a longitudinal fold in the midale ae. the 
b Hyaline cells on the inner surface of the leaf in the upper 
cell-walls, between the fibrils; on the outer surface with numerous 
pores on all parts of the leaf; these are small and strongly ringed 
at the apex, becoming oradually larger and less strongly ringed 
towards the base, where th re very | , non-ringed, an 
‘da : 
the leaf-margins the outer and in ores frequently exactly cover 
one another, so that complete povtor ation of the leaf ensues. 
Chlorophyllose celis in section triangular to isosceles- trapezoid, 
inserted between the hyaline cells on t e inner surface, and here 
ae 
clearly distinguishable, broadly oval, toothed on the rounded apex; 
pore-formation as in the other ranch-leaves ; ; in the lower half or 
two- thirds without fibrils and pores, more rarely without fibrils and 
pores on the whole surfa 
Fruiting wbrstiryg generally short; perichetial bracts large, 
ovate, with ad border; in the lo wer part with elongate ted 
ae pitted chloropliyllose ak: above with both kinds 
of cells, of which the hyaline ones are 1-4 times septate by 
blige cross- “walls ; in the Ser itself with narrow short _— rO- 
e easily aieaed by the dense and tall + with the very 
