NOTES OX JAPANESE HEPATIC<E 151 



elliptica and Ptcris cretica. Collector, Yoshinaga (no. 25. p. p.), 

 October, 1903. 



Leafy propagula are produced by this new species in great 

 abundance and resemble in all essential respects those described 

 by the writer for L. clliplica, L. exocellata and various species 

 of Drepanolejeunea? They occur not only on sterile plants 

 but also on those with sexual organs. In some cases they are 

 borne here and there behind normal leaves, the branch bearing 

 them showing no apparent modifications. It is much more 

 usual, however, to find them on microphyllous branches with 

 closelv crowded and aborted leaves (fig. 3). In such a case, 

 each rudimentary leaf gives rise to a propagulum, and the 

 growth of the branch is ultimately limited, although usually not 

 until many propagula have been formed. When the propagula 

 become detached they leave behind them their inflated basal 

 sheaths. It sometimes happens that an entire plant gives itself 

 up more or less completely to the production of propagula, and 

 under these circumstances it becomes difficult to detect upon it 

 normal leaves and underleaves. 



The propagula themselves exhibit no new features. The first 

 1 or 2 underleaves develop radicelliferous discs in the usual way, 

 and the first few leaves are more or less sharp-pointed, the first 

 leaf of all being sometimes but not always reflexed. 



L. subacuta is closely related to the widely distributed L. 

 elliptica (Lehm. & Lindenb.) Schiffn. and also to L. exocellata 

 (Spruce) Evans, of the American tropics. It agrees with these 

 species in its general habit, in its entire leaves, in its cell struc- 

 ture, in its large basal ocelli and in its short and simple female 

 branch. It differs from both in the more numerous ocelli of its 

 leaves and in its broader and blunter perichaetial bracts. Its 

 leaves also are a little broader than in L. elliptica (being usually 

 from 12 to 14 cells broad, instead of from 8 to 12), and its dioi- 

 cous inflorescence will further distinguish it from L. exocellata. 



Another close ally, judging from the description, is L.folii- 

 cola Steph., 2 known only from the type locality, the island of 



1 Bull. Torrey Club 29 : 507-509. pi. 22,/. 9-13. fl. 24, f. 10. 1902. 30 : 29, 



3 1 - 32, 37. 39- fl-5,f-3- 1903- 



2 Hedwigia 35 : 106. 1S96. 



