108 BATRACHOSPERME^. 



Batrachospermum confusum ; it is nevertheless shorter, but as 

 thick. Its whorls are round and distinct ; they are more ap- 

 proximated the one to the other in the large stems, about 

 which they are sometimes even confused. Their colour is a 

 greenish yellow, pale, and livid. 



" This plant is found in ditches and in the most tranquil 

 fountains. I have even seen it in marshes fixed against 

 scirpes and stakes." 



5. BATRACHOSPERMUM MONILIFORME Hass. 



Char. Frond blackish brown. Whorls of the stems, distinct, 

 spherical^ in the branches confused. 



Batrachospermum ludibundum (moniliforme) Bory, in loc. 

 cit. xii. p. 322. pi. 30. fig. 1. Conf. fontana, nodosa, sper- 

 matis ranarum instar lubrica major et fusca, Dill. Muse, 

 p. 36. t. vii. fig. 42. Char a (gelatinosa frondibus gela- 

 tinosis Jilamentosis : filamentis capillaribus tenuissimis. 

 Verticillis approximatis moniliformibus, Roth. Cat. i. 125. 

 Batrachospermum (moniliforme) filis ramosis ; ramis al- 

 ternis pollentibus, *c., Roth. Cat. Bot. iii. 160. Batra- 

 chospermum moniliforme Vauch. Conf. 112. t. 1. fig. 5. 

 et tab. ix. fig. 4. 



Hob. Plassey, near Limerick: W. H. Harvey. Upland 

 mountainous district 14 miles west of Aberdeen : Dr. 

 Dickie. Gralway: M ( Colla. Hill of Fare: Dr. Dickie. 



" This variety is the commonest of all. It is frequently 

 met with in fountains, in rapid rivers, and even in waters 

 almost stagnant ; it is sufficient that they are pure. It 

 has some resemblance to the variety B. confusum; but it 

 is more slender, and its bearing is more elegant. Its stems 

 are very much divided, and from one to three inches long ; 

 the globules which cover them are round, distinct, and appear 

 to hold each other only by their poles. They are, however, 

 confused in the last branches, which resemble little worms. 



" The colour of the B. moniliforme is deeper than that of 



