14 BRITISH CHAROPHYTA. 



tion is ascribed to the use of Egyptian cotton in the mills, there 

 seems a probability that C. Braunii, which also occurs in Egypt, 

 has been introduced by the same means, although the distri- 

 bution of the species is such as to make its occurrence in this 

 country not improbable. 



Many continental botanists have followed Braun in using the 

 name C. coronata for this species, but such a course is at variance 

 with the " Eules," and we are glad to be able to retain the earHer 

 published name given by Gmelin in honour of the illustrious 

 Alexander Braun, by far the greatest authority on the Charo- 

 phyta. 



[There are two other European species belonging to 

 the section Haplostephanas, C. scoparia Braun, found 

 in Prussia, which closely resembles C. Braunii, but has 

 a triplostichous cortex to the stem, and C. Felosiana 

 Avetta. found in Northern Italy, which has a diplo- 

 stichous cortex to the stem, and is apparently allied to 

 the extra-European C. flaccida. Of C. Pelosiana we 

 have not seen a specimen or figure.] 



Section 2. DIPLOSTEPHANM Braun, 'Consp. Char. 

 Europ.' p. 4, 1867. 



Circle of stipulodes in a double row. 



Subsection 1. Haplostichse Braun, 'Consp. Char. Europ.' 



p. 4, 1867. 



Rows of cortical-cells of the stem equalling the 

 branchlets in number, no secondary rows being produced. 



2. Chara canescens Loiseleur. 

 (Plate XXVII.) 



Chara hispida var. microphylla Schumacher Enum. PI. Saell I, 



p. 260 (1801). 

 C. canescens Loiseleur Notice aj. Fl. Prance, p. 139 (1810). 

 De Oandollb pi. Pi-ane. tome 5 (or vol. 6) p. 246 (1815). 

 Reichenbach in Mossl. Handb. d. Gew. ed. 2, p. 1599 (1829) 



PI. Germ. Exc. p. 150 (1830). 

 Geovbs in Journ. Bot. XVIII, p. 134, t. 208, f. 9 (1880)- in 

 Babington Man. ed. 9, p. 541 (1904). 



