THF, FUCACKK OF .TAFAX. ^ 4'^ 



The rejirodiu*tiv(^ ori2;:m i^ not developed in oui- specimens. 



vai'. stipulât II Yexjjo. 



Plate XYTr. Fiçr. 2-3. 



Prelini. List of Jap. Fiie. j). IHO. 



Diagnosis. IVtiolis folioi'um complanuti.«, nncipitibus, alatis, jnariii- 

 nihiis acute dentatis. 



Description of the variety. Var. sti^mlata has the petioles 

 complanated with coarsely deutated wings along the ancipitous 

 edges. In other respects as in the type. 



Remark on the affinity. Onr plants have a close affmity 

 with that illustrated by Kutzing in his Tab. Phyc. XI. Taf. 2, 

 fig. 2, under the name of Sargassum herbaceum. J. Agardh^' 

 doubtingly referred Kutzing's figure to Sargassum aquifolium 

 Ag. But this referring of Kützing's plant to Agardh's could have 

 resulted only from uncertainty as to the specific conception of tlie 

 latter. Keinbold'^ has already j)ointed out this matter in full. 



The present species belongs without doubt to the 'Matifolium " 

 type ; but none of the species under this type are by any means 

 well defined, as may be seen from Reinbold's remarks. The 

 present species has also a certain resemblance to a form of Sargassum 

 iUcifoUum J. Ag. The latter is, indeed, very hard to separate 

 from the species of the " latifolium " type when sterile. It is, 

 therefore, very probable that Harvey's species may be reduced 

 to some of the known species of the type mentioned, and still 

 more probable that var. stipulata should not be placed under 

 the present species but under some other. These are highly 

 interesting problems which ought to be solved in the future. It 



1) Spec. Sarg. Austr. p. 102. 



2) Sarg. V. Ind. .\rcli. p. 74. 



