234 THE BOTANICAL MAGAZINE. LY«. xxix. No..346. 



but not so conspicuous as in the present plant is also to be 

 found in Erythrophyllutn delesserioides J. Ag. I have not tried 

 any research on this content in a fresh material. 



Ruprecht 1} observes a similar cell-content in Crossocarpus 

 lamuticus. He saj^s:- "Ueber ihre Verteilung und Bedeutungbin 

 ich nicht ganz aufklart worden." In the specimens which I have 

 collected in the Kurile Islands and identified to Ruprecht's 

 species, this cell-content is quite common in all parts of frond. 

 Long and fusiform ones are generally in the position of an axial 

 cell of the blade, and the small filiform or clavate ones are 

 scattered in the medulla without any fixed order. In these 

 smaller cells I find some cases which seem to me to link a 

 granular content with the homogeneous substance. For further 

 detail I have but to repeat Ruprecht's words quoted above. 

 The specimens in my possession are all sterile. 

 Although its fructification is not known, the present plant 

 exactly coincides with Erythrophyllum delesserioides J. Ag. in 

 the essential characters of the structure of frond. The latter 

 may be separated from the former by having a prominent rib 

 in a blade. In Florideernes Morfologi, PI. XV, fig. 2, J. Agardh 

 illustrated a cross section of a blade of E. delesserioides. The 

 figure shows indeed a structure "som s\-nes narmast overen- 

 stamma med den hos Callophyllis forkommande," b} 7 having 

 small cells between the large parenchymatous ones. In fig. 3 

 of the same plate, he delineated a network of the long stretched 

 cells "som bilda det axila knippet i stipes och costa." So far 

 as I could ascertain on the specimens which I have collected on 

 Vancouver Island, B. C, I can not but doubt what J. Agardh 

 has given as fig. 2. This figure, together with its explanation, 

 does not agree with the statement on page 21 of the same work, 

 where the author discusses the formation of ribs and veins of 

 various red algae. In his later work 2j he describes more of the 

 structure of midrib of Erythrophyllum by the cross sections but 

 nothing important on that of the blades. He, however, observes 

 a close resemblance of the structures of the fronds of Polyneuron 



1) Tange des ochotischen Meeres, p. 265. 



2) Anal. Alg., Cont, V, p. 58. 



