Sept., 1914.] YENDO.-NOTES OX ALGJE NEW TO JAPAX. II. 



Hedophyllum Bongardianum, nov. nom. 



= Lammaria Bongardiana P. et R. Illust. p. 10. t. XIII.-XIV. 



-=Hafgygia Bongardiana Aresch. Oloserv. Pliyc. IV, p. 5. 



^Hafgygia Bongardiana Kutz. Spec. Alg. p. 577. 



= Arthrothamnus Bongardianus }. Ac. De Lamiii. p. 25. 



^Laminaria Bongardiana Kjellm. Bering Hafv. Al-tl. ]>. 43. 



= Hafgygia Ruprechtii Aresch. Observ. Phyc. V, p. 4-. 



= Laminaria Ruprechtii Toni, Syll. Alg. Ill, p. 



^Laminaria Ruprechtii Mivabk, Laminaria Industry, p. 42. PI. 14. 

 {in Japanese). 



= Laminaria crassifolia P. et R. Illust. p. 10. t. X\ III, f. 

 = Laminaria nigripes Kjellm. p.p. Bering Hafv. Algfl. p. 45. 

 = Laminaria digitata Rupr. Tange, p. 352. 



= Hedophyllum subsessile Setch. Alga? N. W. Amcr. p. 263,. PI. 20. 

 --= Hedophyllum spirale Yendo. in Bot. Alag. Tokyo. XVII, p. 



165. PI. VI. fig. 1-6. 



This species has been almost a riddle to those who touched 

 to the Laminaria of the North Pacific. The original specimens 

 in the Herbarium of the Academy of Science of St. Petersburg 

 as well as the authentic specimens in the Herbarium of the 

 Botanital Museum of Berlin were good enough to throw a full 

 light to the problem. 



The locality of the type specimens is Port Petropawlowsk 

 iu South Kamtschatka. In Illust. Alg., Postels and Ruprecht 

 distinguished two formte, palmata and bifurcata, according to 

 whether the stipe is simple and lamina digitated or the stipe 

 is bifurcated, both arms bearing digitately divided lamina. 



Among the originals of f. palmata in St. Petersburg, there 

 are srecimens with very short stipe, hardly 1 cm in length, 

 terete, and broadened upwards. An authentic specimen of the 

 same forma, kept in the Berlin Herbarium is also short-stiped 

 one. Cfr. the figure accompanied. Very probably the plant 

 what Areschoug described as Hafgvgia Ruprechtii Aresch. 

 shall be identical with this. The only one specimen of this 

 species could not be found in the Herbarium of the Academy 

 of Science of Stockholm. It is needless to doubt that this form 



