Rhodophyceae. 



A. Proto/loridece. 



I. Bangiales. 

 Fam. 1. Bangiaceae. 



.1. AoARiiH (1881]), Till Algenies Systematik. Tredje afd. VI. Ulvacese. Lunds Univ. Ar.sskrift Tom. XIX. 



G. Bkkthoi.d (1881), Ziir Keiintniss der Siphoneen und Bangiaceen. Mittheil d. zoolog. Station zu Neapel, II. 



(1882), Die Bangiaceen des Golfes von Neapel. Leipzig. 



H. Hus (1902), An Account of the species of Porphyra found on the Pacific coast of North America. 



Proc. Calif. Acad. sc. 3. ser. vol. II No. 6, San Francisco. 

 H. Kylin (1907), Studien iiber die Algentlora der schwedischen Westkiiste. Upsala. 

 Fr. Oltmanns (1904), Morphologic und Biologie der Algen, I, p. 529 — 534. 



Fh. Schmitz (1894), Kleinere Beitrage zur Kentniss der Florideen. V. La Nuova Notarisia, Ser. V, |). 717. 

 - (189fi), Bangiaceen. Engler-Prantl, Natiirl. Ptlanzenfani. I, 2, p. 307-316. 



With regard to the natural history of the Baiigiacew reference may be made 

 to the above-quoted works of Berthoi.d, Schmitz and Oltmanns; I wish only to 

 make some remarks on the spores produced asexually. Berthold named them 

 "neutral spores", a name in niy opinion but little applicable, as these spores cannot 

 be said to be more neutral than the carpospores. Schmitz named them monospores 

 as they are produced by the whole contents of a cell, but the carpospores were 

 given by him the same name, and consequently this was not a name peculiar to 

 the spores produced asexually. Besides, it seems to me more reasonable to 

 compare the cell, which after division produces a number of spores, with the 

 tetrasporangium in the Floridece, than to compare the daughter-cell the contents of 

 which become a spore with Ihe monosporangium of Chanti ansia , for the fact is 

 that the spores in the tetrasporangium are also separated by cell-walls. If the 

 term monospore might be used within this family, it must be for the cases where 

 one spore only is produced by each originally vegetative mother-cell (e. g. Gonio- 

 trichum, Erythrotrichia). When more than one spore are produced by a mother- 

 cell, it might be desirable to give them the same designation as the tetraspores of 

 the Ploridecc , but against that we have the fact that the number of spores is not 

 fixed and may be reduced to one. In order to avoid a long designation the spores 

 produced without sexual process may be named gonidia. According to their morie 

 of development the family may be divided into the following sections. 



