24 BRITISH CHAROPHYTA. 



being an excellent representation of it. Moreover, the earlier 

 post-Linnean authors identified the Linnean name with it, when 

 other species were beginning to be made out. In the Linnean 

 herbarium C. vulgaris is represented by one specimen of the 

 present species and one of C. fragilis. If it be contended that 

 Linnseus's name ought to be set aside, because it included two 

 or more species, the same argument would apply to Braun's 

 C. fcetida. We have not quoted C. montana Schleich as a 

 synonym, that name having been published without description. 



Var. b. longibracteata. 



KuTziNG Sp. Alg. p. 523 (1849). 



(Plates XXI & XXIX, fig. 3). 



C. longibracteata Kxttzing in Reichenbach, Fl. Germ. Excurs. II, 



p. 843 (1832) ; Tab. Phyc. VII, t. 60, f. 1 (1857). 

 C. fcetida var. longibracteata CossoN & Geemain, Atl. Flor. Par. t. 37, 



f. 7 (1845). 



ExsiccATA : — Ai-escboug 46 ; Braun, Rabenh. & Stiz. 83 ; Groves 

 14; Krypt. Exsicc. 1213; Migula, Syd. & Wahlst. 109-11; Raben- 

 horst 359. 



Stem moderately stout. Cortex regular. Spine-celh 

 short and appressed or rudimentary. Branchlet seg- 

 ments elongated, the ultimate 2-3 ecorticate, often 

 forming whip-like ends. Anterior bract-cells and brac- 

 teoles very long, often 6 or more times the length of the 

 oogonium. 



Though well-marked in its extreme forms, intermediate states 

 between this and the type are constantly found. 



Var. c. papillata. 



Walleoth Annus Botanions, p. 183 (1815). 



(Plate XXIX, fig. 2.) 



C. decipiens Desvattx in Loiseleur, Notice aj. PI. Prance, p. 138 (1810). 



0. collabeiis Agaedh Syst. Alg. p. xxviii (1824), fide Braun. 



C. fcetida var. papillari$ Beatjn in Ann. sc. Nat. ser. 2, 1, p. 355 (1834). 



CossoN & Geemain Atl. PI. Par. t. 37, f. 6 (1845). 

 C. fcetida var. subhispida Beaun in Plora, XVIII, i, p. 64 (1835). 



