ALGAE OF THE PEIBILOE ISLANDS. 5i)3 



Fucus platycarpus Thur. ? 



A single specimen of Fucus exists iu the Jordan collection and seems to the 

 writer to come nearer to the species noted above than to any other. Yet it does not 

 seem to be hermaphrodite, while J'. |>Z«t^carp?(s, usually plainly hermaphrodite, does 

 seem at times to be dioecious. It certainly appears to be different from F. evanescens, 

 the only species known with certainty from Bering Sea. 



RHODOPHYCEAE. 



Porphyra laciniata, var. uiubilicalis Ag. 



The speciaiens referred to this species are iu the collection received from the 

 Albatross exi5editiou of 1895. There are several of them, but none of them are in 

 fruit or show reproductive bodies of either kind. The fronds are conspicuously umbili- 

 cate, dark purple, monostromatic, with cells elongated i)erpeudicularly to the surface 

 of the frond. In every way they are different from Diploderma variegatum Kjellm. 

 and agree exactly with the plate of C. Agardh (1828, Taf. 2C), especially with figures 

 a, d, and e; for a zone, just within the margin in our plants, is extremely deliques 

 cent, and the cells thus loosened reproduce figure d exactly, as well as answer to the 

 description given in the text, ifo form like this has been seen on the California coast 

 by the writer, nor does Kjellman mention other than the species noted above, viz, B. 

 variegatum, from Bering Sea. 



Iridaea laminarioides forma parvula K.iellm. Kjellmau, Beringshafvets Algflora; 31, 1889. 



A number of specimens of a very dwarf form of this common species of the west 

 coast of North America were found in the collections received from President Jordan, 

 and althougli they were much gelatinized on account of their stay in the formalin, 

 yet they still retained sufficient of their form and structure to be readily recognizable 

 as belonging to the particular form described by Kjellman. This form is not found 

 upon the California coast. Both cystocarpic and tetrasporic specimens are in the col- 

 lection from St. Paul. (Bering Island.) 



Chondrus platynus (Ag.) J. Ag. ? Kjellmau, Beringshafvets Algflora; 32, 1889. 



A considerable number of specimens of a Chondrus were collected by Messrs. 

 Greeley and Snodgrass and all are in cystocarpic condition. They answer fairly well 

 the description given for C. platynus in J. G. Agardh's Species Algarum (1876, p. 178). 

 It is also the species reported by Kjellman from the northern part of the Bering Sea. 

 (Konyam Bay and Port Clarence.) 



Gymnogongrus fastigiatus, var. crassior Eupr. Kupreclit, Tauge Oeh. ; 326, 1851. 



The only information regarding this plant comes from the reference quoted above 

 and what Schraitz (1893, p. 394) has to say of it in connection with ISterrocolax crassior. 

 It seems certainly allied to Ahnfeldtia plicata, but is, periiaps, distinct. 



Callophyllis variegata (Bory) Kuetz? Ruprecht, Tange Och. ; 262, 1851. 



Euprecht says (1. c.) that a Callophyllis occurs at St. Paul Island which is near 

 to this species. 



Rhodophyllis dichotoma (Lepecli.) Gobi. Kjellman, Beringshafvets Algflora; 27, 1889. 

 Ciliariafusca Eupr,, Tange Och. ; 251, 1851. 



Known to occur at St. Paul only through Euprecht's reference. (Bering Island.) 

 5947— PT 3 38 



