July, 1910.] YE^'DO.— NOTES ON ALQJE NEW TO JAPAX, V. 261 



AIoNT. The type specimen of L. botrychioidcs Harv. at Dublin. 

 however, have the pinnules ven' often once more pinnulated, 

 thus losing- the distinction pointed out by J. Agakdii. [ am 

 rather inclined to suppose that Harvkv did not fully recognize 

 the specific characters of L. distichophylla J. Ag. This is 

 strengthened by the remark in Epieris, p. 657, that the specimen 

 under L. distichophylla in Flora No. Zel., p. 234- differs from 

 the type. In the Herbarium of the Trinity College, Dublin, the 

 specimens under the prCvSent species are not uniform. 



Locahty. Boshii Prov. (F. Sugiyama) ; Sagami Prov. (F. 

 Hirayama, No. 83). 



Distribution. Cape of Good Hope; New Holland. 



Polysiphonia flexella J. Ag. 



Alg. Med., ]). 1-tO.— Id.: Si)cc. Alg., II, p. 1014.-De Toni: Syll. 

 Alg. IV, p. 916. 



(For other referreiices and list of s^aionymcs, sec: De Toni, 1. c.j. 



It is interesting to find this peculiar species of Polysiphonia 

 within our boundar}'. The specimens in my hand agree well 

 with Kutzing's Tab. Phyc., XIV, Taf. 89, fig. I, but the ultimate 

 pinnules are rudientallj^ corticated on the lower half portions. 



Locality. Rikuzen Prov. (Miss Wainwright, No. 42); Echi- 

 go Prov. (M. Nakamura, No. 106); vShima Prov. (K. Ishikawa). 



Distribution. Mediterranean Sea; Atlantic coast of southern 

 Europe. 



Polysiphonia mollis H. et II.? 



ill IIarv.: Ner. Austr., p. 43.— De Toni: Syll. Alg., IV, p. 877. 

 (For other referrences, see: De Toni, 1. c.). 



This plant is readily distinguished by having an appearance 

 of P. violacea but not corticated throughout the whole part of 

 frond. It is defined to have the articuli of minor filaments 4—5 

 times as long as diameter. In our specimen, they are hardly 3 

 times as long, and no fructification was found. Still, as the 



