SiphonefB,'] vaucheria, 311 



were very different ; the ramuli, instead of being distichous^ 

 as in B.jdumosa, were irregularly scattered, and proceeded 

 from all sides of the filaments, having, in the water, a bushy 

 appearance, like a fox^s tail. Afterwards, however, this 

 opinion was considerably shaken, as I found the two running 

 into each other, so that I could not distinguish them. 



Genus LXXXIX. YAUCHERIA, Be CandoUe. 



Gen. Char. Fronds aggregated, tubular, continuous, capillary, 

 coloured by an internal green pulverulent mass. Fructification, 

 dark green, homogeneous vesicles {coryocista, Ag.) attached to 

 the frond. — Greville. — The name is in honour of M. Yaucher, a 

 distinguished naturalist, author of a standard work, ' Histoire 

 des Coiiferves d'eau douce.' 



1. Fauc/ieria submarma, Berk. 3. V.velutma, Agaidh. 



2. marina, Lyngbye. 



These three Vaiicherm have been got only at Appin, 

 Argyleshire, and in the south of England. See Harvey^s 

 ' Manual of British Algse,^ page 195. 



