128 



in Hook. Brit, Flor. p. 389. ; also in Manual, p. 122. 

 C. elegans Ag. 



Hab. On sticks, &c., in stagnant pools, common. 



" No species is more easy to recognise ; it is formed of 

 gelatinous protuberances of all sorts of figures, and of a 

 diameter which varies from a point to an inch." Vaucher. 



5. CHJETOPHORA PISIFORMIS Ag. 

 Plate IX. Figs. 5, 6. 



Char. Frond subglobose, fleshy, green. Filaments sub- 



dichotomous, obtuse. Sporidia globose, axillary. Carm. 



Harvey, in Hooker's Brit. Flor. p. 389. ; Berk. Alga), 1. 1. 



fig. 1. ; Grev. Crypt, t. 150. 

 Hab. In subalpine lakes. 



Mr. Berkeley has discovered capsular fructification on this 

 species, and Kiitzing has figured similar capsules as belonging 

 to C. tuberculosa. The occurrence of these capsules must be 

 regarded as excessively rare, and therefore commonly con- 

 sidered as the only mode of reproduction possessed by species 

 which are everywhere so abundant. 



6. CH^ETOPHOKA LONG^EVA Carm. 



Char. " Frond indefinitely effused, incrusting, gelatinous, 

 green. Filaments subdichotomous. Kamuli produced pro- 

 liferous towards the apex." Carm. 



C. long&va Harvey, in Hooker's Brit. Flor. ; also in 



Manual, p. 123. 

 Hab. In a boggy stream at Appin : Captain Carmichael. 



" Fronds, continuous, or so closely set as to have that ap- 

 pearance, of a delicate green colour, and more flaccid than 

 those of C. elegans, apparently from a deficiency of gelatine. 

 Filaments in all respects similar to those of other species, 

 excepting in being mostly proliferous." 



I cannot regard this as a distinct species, and would refer 

 to it C. endivicefolia or C. tuberculosa. 



