84 ERYTHEA. 



A marked feature in the structure of the parasite is tlie difFereuti- 

 ation into assimilatory and rliizoidal structure. The cells which 

 comprise the cortical tissue possess chroraatophores and contain a 

 certain araount of pigment. The central tissue is composed of cells 

 much moi'e elongated, and destitute of chromatophores. These at 

 the point of attachment of tlie parasite to its host form regular 

 cell-connections with the latter and apparently derive a considerable 

 amount of sustenance from the host plant. 



Three species of Janczewskia are known at present. The typical 

 species, /. verruciformis Solms, occurs in the Mediterranean Sea 

 upon Laurencia obtusa. Another species, /. Tasmanica Falkenberg, 

 is found upon Laurencia Forsteri on the coast of Van Dienien's 

 Land, while the remaining species grows upon Cladhymenia oblongl- 

 folia of the South-Australian sea. 



It is of interest to note the further extension of the range of 

 these European and Australian species to the Califoruian coast, 

 upon which a number of other species of parasitic Florideee, not 

 yet satisfactorily determined, have also been found. 



SHORT ARTICLES. 



Sph^roplea annulina. — The writer called attention in Feb- 

 ruary, 1896 (Erythea, iv, 35), to the fact that this rare alga had 

 been found at Sau Bernardino by Mrs. Austin (cf. Farlow, Botaii. 

 Gazette, viii, 225, 1883) and that an additional locality had been 

 discovered in the Los Angeles River by Miss S. P. Monks, of the 

 Los Angeles State Normal School. Since then it has been redis- 

 covered at San Bernai-dino by Mr. S. B. Parish^ and an additional 

 locality, this time nortli of the Tehachapi, is reported by Mr. J. Burtt 

 Davy, of tiie Botanical Depai'tmeut of the University of California. 

 Mr. Davy found it in thick sheets, lining the bottoms of drying 

 pools in the "Black Lands" just east of Tulare, in Tulare County. 

 Sheets a foot or two in diameter were obtained and they were of a 

 brick red color. Sets of specimens from Messrs. Parish and Davy 

 will be distributed in the next fascicle of the Phycotheca Boreali- 

 Americana, — W. A. Setchell. 



