Algae. 333 



YENDO, K., On Caiilerpu anceps Harv. (Bot. Mag. Tokyo. 

 Vol. XVII. No. 200. 1903. p. 153—157.) 



The author carefully observed, during a whole year, a Caulerpa- 

 species growing on a rock at M i s a k i in the province of Sagini. He 

 identiües it as C. brachypus Harv. The reviewer had previously identi- 

 fied this plant as C. brachypus also, bnt afterwards, iollowing the opinion 

 of Mrs. VVeber-van Bosse, reierred it to C. anceps Harvey (Okam. 

 Alg. Jap. Exsic. No. 47) Yendo found that the specific characters of 

 C. brachypus vary in some degree with the season, but was able to 

 detect a good specific character in the bullation of the short pedicels of 

 this plant. He then concludes that if C. anceps of Friendly Island 

 has no bullated pedicels, C. Stahlii must be united with it while, on 

 the other hand, if it does posess bullated pedicels, it is nothing but 

 C. brachypus. Last summer the reviewer collected C. anceps (— C. 

 brachypus of Yendo) in Kiushu and found it to posess bullated. 

 pedicels. Kiushu is not far away from Rinkin, where Harvey 

 collected the original specimen of C. brachypus, reason why the reviewer 

 thinks it likely that Yendo 's opinion will prove to be right. 



K. Okamura. 



YENDO, K., Hedophyllum spirale sp. nov., and its relation 

 to Thalassiophyllum and Arthrothamnus. (Bot. Mag. Tokyo. 

 Vol. XVII. 1903. p. 165—173. PI. VI.) 



The author describes a new Hedophyllum with the iollowing 

 diagnosis: Hedophyllum spirale sp. nov. — Frons junior lamina simplici 

 obovato-cuneata, stipite brevi subcylindraceo solido; adultior marginibus 

 laminae exterioribus crassissimis ad basin, intus spiraliter involutis, 

 stipite crassiore subcompresso brevissimo solido ramosissimo. Pars media 

 laminae sensim extra et deorsum ad usque ad basin, sinum inter duo 

 volumines relinquens, obliteratur; volumen laminam in plures lacinias 

 longitudinaliter fissam emittens. Medulla in sectione transversali stipitis 

 ellipsoidea. Sori in maculas basi laminae ambitibus irregularibus. Habit, 

 ad insulam Shimushu. 



f. Kamtschatkensis f. nov. — Frons major, stipite 20—30 cm longo, 

 basi subtereti, sursum compresso expanso marginibus involutis. Habit, ad 

 oras Javinam Kamtschatkae. 



After giving minute descriptions of the present plant and of the 

 developement of Arthrothamnus he considers the affinity of Hedophyllum, 

 Arthrothamnus, Thalassiophyllum and other related genera as follows: 

 „The erosion of the primary lamina, Spiral rolling, the dorsiventrality in 

 Hedophyllum spirale suggest the close relationship with Arthrothamnus 

 and Thalassiophyllum; and with Agarum if we neglect the first character. 

 If we attach systematic importance to the erosion of the primary lamina 

 the genus Eisenia must be excluded from the subtribe Ecklonia of 

 R e i n k e , and placed near Arthrothamnus or Hedophyllum. 



K. Okamura. 



Yendo, K., Three species of Marine Ecballocystis. (Bot. 

 Mag. Tokyo. Vol. XVII. No. 202. 1903. p. 199—206. 

 PI. VIII.) 



The author describes three new marine Ecballocystis with the follo- 

 wing diagnoses. 



Ecballocystis Willeana sp. nov. — Thallo elastico-submembranaceo 

 initio solido tuberculato affixo postea hemisphaerico sinuato demum 

 cavo basi margine ad substratum adhaerente diametro 2 — 6 mm., atro- 

 virescente, e cellulis in gelatinosa substantia inclusis in longitudinali 

 sectione thalli radiante dispositis et ad peripheriam dense aggregatis, 

 constante; cellulis periphericis irregulariter clavatis deorsum attenuatis 

 vel oblongo-obovatis infimis subglobosis basi nonnunquam dissolutis 



