256 THE r.OTANrCAJ. MAdAZINE. rv..i. xxx. No. :--.... 



question. It is sharply distinguished from other speeics of 

 Gelidium ever known from Japan. 



Locality. Rikiucn Prov. (Miss Wainwrigiit, Xo. '•('>); Kno- 

 shima (P. ITirayama, No. 105); llini^a Prov. (I). 



Dislril)ution. ? 



Ahnfeltia concinna J. Ac. 



Al.Cf- Licbm., p. 12.-1(1.: Spec. Alg.. II, p. 312.-1(1.: Ivpk-ris, p. 

 207.-DK To.Ni: Syll. Al.-,^ IV, p. 256 (excl. syn.). 



= Speerococcus concinnus var. immersus Ac: Spec, p. 312. — Id.: 



System., J). 234. 

 =Gymnogongriis inijAicatus KCtz.: Spec. Alj^., p. 780. — Id.: Tab. 



Phyc. XIX, Taf. 69.— J. Ac: Spec, khr., II, p. 312. 

 = Sphxrococcus implicntas Kirz.: in litt. Herb. Miis. Hot. Herol. 

 — TyJocarpus implicatus KiTZ.: Plu'C. Gen., p. 411. 

 = Ahnfeltia californica Sonder : in lilt. Ilnb. Mus. Hot. P)ei-ol. 

 = Ahnfeltia gigartinoidcs J. Ac: Al<:^. Liebni., p. 12. — Id.: S|)ec. 



Alg. 11, p. 311.-1(1.: Epicris. p. 206.— Die Toxi: Syll. Al.u. IV, 



p. 255. 



Onr specimens coincide \vith the type of Ahnfeltia concinna 

 J. Ag. in the A^ardhian Herbarinm at Lund. A bleached s])eci- 

 men from Japan sent b\' Mr. Tanaka to Grunow is found in 

 the Herbarium of the Botanical Museum of Berlin under A. cali- 

 fornica SoxDER, determined by (tRunow. I can not find out 

 where Sonder has published the species. 



Setcheel brought A. gigartinoidcs J. Ao. to a synonymous 

 position under the present species, 'f he type sjDCciemens of both 

 s])ecies are indeed hardly separable one from the other. 



De Toni synonj-^mizes A. Polvides J. Ao. under A. concinna 

 J. Ag., however with (juestion. Setciiell expressed no hesita- 

 tion in doing so. In the Agardhian Ilerbaritnn. .Xresciioug's 

 species is treated separately from A. concinna. But some speci- 

 mens which are in my view to be safely determined as A. con- 

 cinna are found under A. Polvides. The specimen distributed by 

 Setciiell as No. 430, Phyc. P.or.-.Xnur. under A. concinna, in 

 the co])y in my possession, agrees better with A. Polvides as 



