.Inly, I'll.;.! YhWlxi. -.XdJ'i:^ ().\ ALCJ'] Nh'W 7'o ./.1/M.V, V. 2~)\ 



not. As lins l)ccn ()l)scrvc(l 1)y Colt.ins, the cpidcrmni Inycr of 

 ail old plant olUii consists of two strata of small cells. 



The type spceinicii ot Diplophus nuirginntus J. Ao. shows 

 rci^nlar dieliotomons ramification with narrow sini and the scj^- 

 ments running" nearly parallel. The set^ments are linear, ahoiit 

 8 mm in average breadth, hullated transversely at regular 

 intervals. These points are .already noted by the establisher of 

 the j-pecies. The bulla tion, however, so far as I could under- 

 stand in the type specimen, seems not to be a constant charac- 

 ter 1)nt perhaps due to unequal contractions of the marginal 

 and axial part of frond on drying. 



In the present species, as Coi.lins observes, " some of the 

 segments develop more rapidly than others, so that as the plant 

 grows . older it assumes more of the character of a flexuous 

 rachis with alternate l)ranches." This is excellently illustrated 

 b\' Okainiura and may be taken as a good distinction between 

 the two species. The other character put much stress by the 

 two writers are rather variable and often common for both 

 species. 



A. and E. S. Gepp have jointly described a plant from New 

 South Wales and Queensland as new, calling it Dictvota pro- 

 HBcans. The structure of the plant proves it a Dilophus stand- 

 ing near by the present species. They seem to have regarded 

 the small proliferations on the surfaces of frond as a specific 

 character. I have no less doubt about it, if the proliferations 

 were not embryonal shoots germinated from the matured spores 

 and still growing attached to the mother frond. I have re- 

 ])eatedly met with similar examples among Uictyotae and 

 Spathoglossae. They are, therefore, quite different from the 

 sporiferous proliferations characteristic to Glossophora. 



Locality. Rikuzen Prov. (Higashi, Okamura) ; Iwaki Prov. 

 (Okamura); Boshu Prov. (!); Sagami Prov. (Higashi, Okamura); 

 (F. HiRAYAMA, No. 08), (!); Id/u Prov. (!); lyo Prov. (Oku- 

 DAiRA, Okamura); Hizen and Higo Prov. (Okamura); Eehigo 

 Prov. (!); Sado Island (T. Obara, No. 35). 



Distribution. California;? New South Wales;? Queensland. 



