4 [No. 



seldom attaining any considerable size. In March last winter, 

 however, I found two fragtmentary specimens rather richly pro- 

 vided with ripe carpospores and one with tetrasporangia in de- 

 velopment, which prove it to be identic with the above species, 

 and also showing that Prof. Schmitz has been right in referring 

 the species to Turnerella. In August last year I found the spe- 

 cies with cystocarps in development. 



The immersed cystocarps partly are scattered partly and 

 more frequently somewhat. crowded here and there in the frond, 

 apparently seldom in any greater number, in a fully developed 

 stage equally prominent in both sides of the frond, subhemisphe- 

 rical and 250 — 450 f* in diameter, generally abouth 300 — 350 /*. 

 Now and then and especially in a younger stage they are a little 

 more prominent in the one than the other side of the frond, and 

 in a very young stage not seldom to be seen only in the one 

 side. Thus in a specimen from Korsnes in Nordland, probably 

 tåken in October, I found young cystocarps in development, all 

 of which were a little prominent only in the one- side. In the 

 specimens from the Trondhjem Fjord I also found such, but here 

 the cystocarps frequently were equally prominent in both sides 

 even in a very young stage. So far as I have seen they fully 

 accord with those in Turnerella as deseribed by Schmitz 1. c. 

 the spores densely crowded without any order in the peripherical 

 portions of the nucleus. But I am not sure whether only the 

 end-cell of the branchlets in the gonimolobes forms a carpospore. 

 The carpostome is at first to be seen just before the spores are 

 ripe, and by and by the whole or nearly the vyhole prominent 

 pericarp often gets dissolved, so that at length a smaller or larger 

 hole is formed through the frond. 



The tetrasporangia appear to occur in other individuals 

 than the cystocarps. However, I have seen but a solitary speci- 

 men with the former organs in development. Seen from the sur- 

 face of the frond they form small and irregular stains of indifinite 

 shape, rather resembling those in Callymenia reniformis. The 

 sporangia were not yet parted. 



In the Trondhjem Fjord the species grows in scattered indi- 



