348 W. A, Setchell — Classification and Geographical 



TJlopteryx, Kjellm. — This genus contains a single species V.pinna- 

 tifida (Harv.), Kjellm., which is found in Japan. Specimens are 

 rare in herbaria and it is very difficult, therefore, to get material 

 for study. Kjellman has given an excellent account and figure of 

 the adult plant. ^ The writer has also had the opportunity of ex- 

 amining an excellent young specimen collected by Prof. K. Miyabe 

 of Sapporo, Japan and preserved in the herbarium of Prof. Farlow 

 at Cambridge, Mass. 



The blade possesses cryptostomata, a distinct midrib and is deeply 

 pinnatifid on the margins with finger-shaped pinnae. The pinnae 

 decrease in length towards the base of the frond and at the transi- 

 tion-place are represented by mere protuberances. The stipe of the 

 young specimen in Prof. Farlow's herbarium is cylindrical and un- 

 modified, but in the older fruiting specimen figured and described 

 by Kjellman, it is plicately twisted above somewhat after the 

 fashion of the stipe of Saccorhiza hulhosa, DelaPyl. 



Ecklonia, Hornem. — There are about six species of Ecklonia, of 

 which it is difficult to get good material for study on account of the 

 large size of the plants and their rarity in herbaria. Through the 

 kindness of Prof. D. C. Eaton of Xew Haven, Conn., the writer has 

 been able to examine a number of fine specimens of Ecklonia radiata 

 (Turn.), J.Ag., collected by Baron F. von Miiller of Melbourne, 

 Australia. Some of these specimens were fairly complete and 

 showed very well the characters of the adult plants. 



The blade is very broad and long, and its margins are deej^ly 

 pinnatifid their whole length. The pinnae are broadly linear- 

 lanceolate and arise as outgrowths at the base of the blade. As the 

 blade increases in length, there is a tendency for the central portion 

 to wear away faster than the pinnated margins, and consequently 

 there is left on each side of the upper portion of the blade a narrow 

 strip with pinnae attached. The stipe in this species is short and 

 solid, but in E. huccinalis (L.), Hornem. from the Cape of Good 

 Hope, the stipe is swollen and hollow." 



Eisenia^ Aresch. — Eisenia arhorea, Aresch. grows on the coast of 

 California and is very scarce and local. Areschoug' compares it 

 with Fostelsia, but from his description it seems to be very different. 

 The writer is indebted to Prof. W. G. Farlow of Cambridge, Mass., 



' Cf Kjellman and Petersen, Om Japan's Laminarier, in Vega Expeditionens Jaktta- 

 gelser, Bd. 4, 1885. ^ en p. & r., m. Alg., PI. 2. ^ Obs. Phyc, Pt. 5, p. 7. 



