- 115 - 



Tetraspores typically verticillate around the node of ramuli in a single 

 row. prominent, slightly bulging out from the cortical layer and bracteated 

 by cortical cells, and enclosed in a hyaline membrane, roundish, tri- 

 angularly or somewhat cruciately divided They are often seriated in a 

 longitudinal row. here along the external, there along the internal side 

 or along the both sides at the same time. Cyxlocarft.i globular, formed on 

 the upper portion of branch and imperfectly bracteated by a few ramuli. 

 Cnlour light pinkish-red. Substance soft and flaccid, and the plant adheres 

 to paper in drying. 



Hab. : On various algae between tide-marks near high tide ; com- 

 mon along the Pacific coast from Kyushu to Hakodate. 



A distinct species belonging to the section Ciliata J. Ag. standing in 

 the vicinity of C. acanthonottim Carm. 



PI. CLXXIX, Fig. 8-16. Fig. 8: fronds of Ceramium paniculattim 

 Okam. growing on Corallina, \. Fig. 9 : portion of frond, f . Fig. 10 : 

 lower articulations, - 8 1 -. Fig. 11 : root fibres, -^-. Fig. 12 : apices of 

 ramuli, ^y^. Fig. 13: branch bearing tetraspores, -^-. Fig. 14: cysto- 

 carps, -^L. Fig. 15-16 : tetraspores, ^|o. 



Dilsea edulis Stackhouse. 



Norn. Jap. : Akaba. 



PL. CLXXX. 



Dilsea edulis Stackh. ; Yendo Notes on Alg. new to Jap. I, (Bot. 

 Mag. Tokyo, Vol. XXIII, No. 270) 1909, p. 133 ; De Ton! Syll. Alg. IV. 

 p. 1635, I'ltciis edulis Turner Fuci II, t. 114; Gmelin, Hist. Fuc. Tab, 



