March, 1917.] jr. YENDO.— NOTES ON ALGAE NEW TO JAPAN. VI. 87 



J. Ag. : Epicris, p. 260.— Hariot : Alg. Yokoska, p. 230.— De 

 Toni : Phyc. Japou. Nov., p. 42.— Id. : Syll. Alg. IV, p. 608. 



= Chylocladia Wrightii Okam. : Nippon Sorui Mei-i, Ed. I, p. 45 ; 

 Ed. II, p. 51. 



= Halococlia Wrightii Mart.: Preus. Exped. nach Ostas., Taiige. 

 p. 131. 



Harvey's type specimen of Halosaccion Wrightii is a sterile 

 plant, measuring but a few centimeters in height. I have col- 

 lected the same plant at the type locality at various seasons 

 of the year. I have a strong ground to believe that Harvey's 

 type is a young and small form of what is known from Florida 

 under Chrysymenia Enteromorpha Harv. The Japanese plant 

 agrees with it in the structure of frond as well as in the fructi- 

 fication. A point of doubt to me, which is not yet solved, is 

 that the Floridan form starts, according to Harvey, as a 

 simple oblong saccate frond, 1-2 inches long and half an inch 

 in diameter at the beginning of its development. The smallest 

 Japanese specimen I have seen is about 3 inches in height and 

 has already decompound ramification, with the diameter of its 

 principal stem about 1 line. The full-grown plants from our 

 seas have the principal stem one third of an inch in diameter 

 and can never be separated, so far as I could observe, from the 

 Floridan form. The structure of cj'stocarps coincides in its im- 

 portant points with what J. Agardh has stated on Chrys. 

 uvaria in Florid. Morfol., Tab. XVI. 



I can not restrain myself but to note here on the close rc- 

 semblence between the present species and Halymcnia ? chond- 

 riopsida J. Ac. The general aspect of J. Agardh's type speci- 

 men is very much alike witli a copiously branched form of 

 Chrys. Enteromorpha and has nearly the same structure of 

 frond. 



T take this opportunity to remark- a lew words on Ilalo- 

 saccion japonicuni IIanv. which has been collected at the same 

 time and the same locality with //. Wrightii. To my astonish- 

 ment, its type in the Herb, Trinity College, Dublin, and the co 

 type in the Agardbian Herbarium, are nothing but Chord&ria 

 aliiciina Kn-K ! To the latter specimen there I"- found & label 



