NOTES ON JAPANESE HKI'ATIC/E 155 



postical margin somewhat incurved, forming an almost contin- 

 uous line with keel, apex usually acute, tipped with 1 or 2 cells, 

 whole margin (except close to the antical base) irregularly 

 denticulate from projecting cells ; lobule inflated throughout, 

 ovoid, 0.17 mm. long, 0.1 mm. wide, keel strongly arched, 

 free margin involute to the apex, curved, sinus (in flattened 

 leaves) deeply lunulate, apical tooth abruptly curved, papilla in 

 a slight depression ; leaf-cells plane to somewhat convex, aver- 

 aging 14// at the margin of the lobe, 18/; in the middle and 

 28 x 18 u at the base, walls with large, irregular and often con- 

 fluent trigones and intermediate thickenings, ocelli mostly 1 

 to 3 at base of lobe, 35 fi long, 23 u wide, often indistinct or 

 wanting; underleaves distant, broadly obcuneate, 0.05 mm. 

 long, 0.05 mm. wide, narrowed toward the base, bifid about 

 one-half with spreading obtuse divisions, separated by a rounded 

 to obtuse sinus ; divisions mostly 3 cells long (beyond the basal 

 region) and 2 cells wide, usually tipped by a single blunt cell, 

 sometimes by 2 cells side by side, more rarely by 2 superimposed 

 cells, basal region commonly with 6 marginal cells surrounding 

 a central radicelliferous portion ; inflorescence dioicous ; female 

 inflorescence usually borne on a leading branch, sometimes on a 

 short branch, innovating on one side, the innovation long and 

 often again floriferous ; bracts obliquely spreading, unequally 

 bifid, complicate, lobe ovate, sometimes falcate and reflexed at 

 the apex, 0.6 mm. long, 0.3 mm. wide, acute to acuminate, mar- 

 gin irregularly dentate or denticulate, keel sharp, occasionally 

 with a narrow, interrupted and entire wing in the upper part, 

 lobule ovate, 0.5 mm. long, 0.2 mm. wide, apex usually acute, 

 margin as in the lobe ; bracteole somewhat connate on one side, 

 ovate from a narrow base, 0.45 mm. long, 0.35 mm. wide, bifid 

 about one-third with acute divisions and a sharp sinus, margin 

 crenulate or denticulate, often unidentate on the sides ; remain- 

 ing parts not seen. 



Type locality, Mount Myoken, Tosa, on bark. Collector, 

 Yoshinaga (no. 7 and no. 6 p. p.), October, 1903. In no. 6 the 

 new species grows mixed with Odoiitosch/sma denudatum (Mart. ) 

 Dumort. No. 7 may be designated the type. 



As a general rule the species of the Lejeuneas in which inno- 



