268 THE BOTANICAL MAGAZINE. [Vol. xxix. n . m. 



which has a quite entire-margined, broadly ovate lamina, while 

 in my materials collected at Goza near Hamajima, Prov. Sima, 

 by Mr. Kawakami, May 29, this year, the sori on both sides 

 of the midrib run together near the base of lamina and a greater 

 part of the frond has already been wasted away. Mr. Ida's 

 specimen has a handsome lamina measuring in dried state 50 cm. 

 long 46 cm. broad with a short stem of 7 cm. by 1 cm. One 

 of my materials collected at Goza by Mr. Kawakami is illustrated 

 in the fig. 3, and in some I measured the length of the stem so 

 long as 20 cm. and more. In that frond and others, sori are form- 

 ed on the undulated wings on both sides of the stem and at 

 the same time on soriferous area of lamina both being continu- 

 ous. According to Prof. Yendo "the sori [on lamina], however, 

 in my specimen were entirely free from continuation with the 

 sporophyll and were found on about the middle portion of the 

 lamina." 13 Again he mentions in other pages of the same paper 

 that "if the both are present they are free from one another." 21 

 His statement may be said most probably to be the result of 

 observations done on the younger specimens he obtained. 



3). Laminaria Peterseniana S) has been made by Kjellman 

 from the specimen got at Goto Island. He describes it with 

 the following diagnosis : 



"Radice fibrosa; rhizinis teretibus, attenuatis; stipite longi- 

 ore, ancipite, alato, alis inferne angustis, crassiusculis, superne 

 dilatatis et tenuatis, submembranaceis, in sectione trans versali 

 nee annulos incrementi nee lacunas muciferas offerente ; lamina 

 amplissima, saltim 3,5 m. longa, 25-30 cm. lata, lanceolata vel 

 lineari lanceolata subpapyracea, profunde et crebre undulato- 

 plicata, lacunis muciferis nullis ; soro fasciam basalem in utra- 

 que superficie laminae formante." — Kjellm. in Kjelem. och 

 Petersen I.e. p. 267. 



The form described by that author is typical, but this plant 

 much varies in shape', size and soriferous area. In the typical 

 that is linear-lanceolate form, the base of frond is ovate or 



1) Yendo : Three New Mar. Alg. from Japan, 1903, p. 100. 



2) Yendo: I.e. p. 102. 



3) Kjellman och Petersen: Om Japans Laminariaeeer, 1885, p. 267, Taf.10.fig.2-3. 



