COLEOCHJETE. 217 



The suspicion also may, I think, be entertained, that C. 

 crispata itself is but a condition of C. glomerata, changed by 

 the difference of its place of growth it growing for the 

 most part in still water, in deep ponds, and lakes. I have 

 often seen specimens, which it would be impossible to refer 

 with certainty to either species. A specimen of C. capillaris 

 in the Linnsean Herbarium, was referrible to this species, or 

 condition of one. 



19. COLEOCEJETE Breb. 



Char. " Frond disciform, oppressed, parasitic, formed of ^la- 

 ments radiating from a centre, generally conjoined. Fila- 

 ments articulated, dichotomousty branched, sending forth 

 in all directions from the upper surface of the cells cylin- 

 drical, truncated, lengthened, setigerous sheaths. Endo- 

 chrome green." Breb. 



Derivation. From KO\SOS, vagina, and %atT?7, seta. 

 1. COLEOCILffiTE SCUTATA Breb. 



Plate LXXVII. Fig. 6. 



Char. Filaments oppressed, conjoined, radiating, so as to 

 describe a disciform frond. 



13 soluta. Filaments radiating, prostrate, free. 



Coleoch<Bte scutata Breb. Description de deux nouveaux 

 Genres d'Algues fluviatiles, Ann. des Scien. Nat., Jan- 

 vier, 1844, p. 25. pi. 2. 



Hab. In stagnant waters and ditches, growing on sub- 

 mersed leaves and stems of aquatic plants. Autumn 

 spring. Near Manchester: Mr. Sidebotham. Aber- 

 deen : Dr. Dickie. Near Clonmel : Prof. G. J. Allman. 



" I have found this remarkable Alga in many places in 

 the environs of the town of Falaise. It grows closely applied 

 upon the leaves and stems of inundated and in part decom- 

 posed plants. I have gathered it principally upon Sparga- 

 nium natans, and upon the Potamogeton natans. Its lenticular 



