NOTES ON JAPANESE HEPATICiE 153 



aging about 16/1 in diameter, a few of the basal cells a little 

 longer and narrower than the others, walls slightly thickened 

 with indistinct and often confluent trigones and intermediate 

 thickenings, ocelli none; underleaves distant, trapezoidal in 

 general outline from a somewhat narrow base, 0.08 mm. long, 

 0.07 mm. wide, bifid to about the middle, with obliquely spread- 

 ing divisions and a lunulate sinus, basal region usually with 6 

 marginal cells around a central radicelliferous region, divisions 

 mostly 3 or 4 cells long and 1 or 2 cells wide at the base; 

 inflorescence dioicous ; female inflorescence on a short branch, 

 innovating on one side, the innovation short and simple ; bracts 

 obliquely spreading, complicate, unequally bifid, not winged 

 along the keel, lobe ovate, 0.5 mm. long, 0.25 mm. wide, 

 acuminate, margin irregularly dentate or short-ciliate, the 

 teeth from 1 to 3 cells long, lobule more narrowly ovate, 0.4 

 mm. long, 0.14 mm. wide, apex variable but usually sharp- 

 pointed, margin toothed but less strongly than in the lobe ; 

 bracteole connate at the base on both sides, broadly ovate, 0.4 

 mm. long, 0.25 mm. wide, bifid about one third with erect, 

 acute to acuminate divisions and an obtuse sinus, margin as in 

 the lobule ; perianth about half-exserted, oblong-obovoid, 0.6 

 mm. long, 0.35 mm. wide, gradually narrowed toward the base, 

 rounded to truncate at the apex and abruptly contracted into a 

 short but distinct beak, keels 5, sharp, extending to below the 

 the middle, very indistinctly roughened from projecting cells ; 

 remaining parts not seen. 



Locality, Takimoto, Tosa, on bark, mixed with Pycnolcjeunca 

 tosana Steph. Collector, Okamura (no. 103 p. p.), October, 

 1904. This species has not before been recorded from Japan 

 but has a wide distribution in Java, Sumatra and the Philippine 

 Islands. It has also been reported, probably erroneously, 

 from tropical America. 



Since the last published description of this little species ap- 

 peared over 60 years ago, 1 it has seemed advisable to redescribe 

 it. Unfortunately the male inflorescence seems to be still un- 

 known, and no organs of vegetative reproduction have as yet 

 been detected. 



'G. L. & N. Syn. Hep. 390. 1S45. 



