Eotryocarpa japonica Okam. n. so, 



Nom, Jap. : Sitzus/tiro-nori. 

 PL LXXXI-LXXXII. 



Diagn. : Frond stipitate, broadly lanceolate, spatulate or 

 obovate, variously torn obliquely or irregularly lobed, rigid and 

 curled, evanescently miclribbed, veinless but with more or less ob- 

 liquely paralelled vein-like striae in older fronds, with irregularly 

 toothed margins; cysti carps shortly stipitate, swollen up near the 

 base of simple or rosulated lanceolate sporophylls produced on both 

 surfaces of frond. 



Hab. : Cast up ashore. Cape Iwaizaki (Prov. Rikuzen). 

 Cystocarps : summer. 



Root a broad disc. Plant furnished with a short cylindrical 

 stem which is more or less branched, and the branches expand into 

 lanceolate, obovate or spatulate leaves. Leaves are rarely simple, 

 usually torn up obliquely into irregular lobes and mostly curled. 

 They are provided with the thick and prominent midrib which is 

 evanescent towards the middle portion, and are veinless ; but in 

 older leaves more or less obliquely parallel striae or marks take the 

 appearence like veins. Margins are mostly coarsely dentate or in 

 some teeth are much elongated. Leaves attain the length of 10-15 

 cm and the breadth of 6-7 cm, and the height of the plant measures 

 17-20 cm or more in fully grown ones. 



In the median longitudinal section of a leaf we find the slender 

 central axis consisting of elongated cells which are thickly surrounded 

 by elongated filamentous cells and smaller ones. In corss-section 



PL. LXXXI LXXXV, December, 1910. 



