g 



ly corresponding to the one of the inner layer to be divided into 

 two or more. For example, fig. to shows such a section which 

 has the sterile portion consisting of 2-3 layers of cells of equal 

 size. Zoosporangia are spherical and isolated. Gametangia globular 

 or slightly prominent. Colour light yellowish-olive. Plant pretty 

 well adheres to paper in drying, but older ones not. 



Hab. : Hirado (near Nagasaki) ; Provs. Ise, Mikavva, Noto, 

 Sado ; Goi (Prov. Kadzusa). 



In fig. 2 I have illustrated small lanceolate fronds from material 

 collected at Goi, in Tokyo Bay, among which there were many 

 larger and broader and round-headed fronds. 



PL. CLIII. Fig,, 1 ; fronds of Homceostroma latifolinin (Born.) J. Ag. 

 (from Prov. Mikawa), }. Fig. 2 : fully grown smaller fronds in Tokyo bay 

 (Goi, Prov. Kadzusa), ^. Fig. 3 : cross-section of the lower thickened 

 portion (same as fig. i), 24. Fig. 4: middle portion of fig. 3 (360 // thick), 

 ^. Fig. 5-6 1 different parts of the same cross-section of a frond, 

 showing hairs in one of them, ? - 3 . Fig. 7: surface view of the sori o- 

 gametangia, &. Fig. 8 : sorus of gametangia, magd., ^_o < pjg 9 : crossf 

 section of frond bearing gametangial sori, 2-* 3 . (Fig. 5-9, from Goi in 

 Tokyo Bay, March, 3, 1915). Fig. 10: cross-section of frond bearing 

 zoosporangia, (172 p thick, from Prov. Mikawa). (Fig. i, 3-4, and to, 

 from Prov. Mikawa). 



Homoeostroma J. Ag. 1896. 

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