COLEOCH^TE. 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 Linnjean Herbarium, was referrible to this species, or 

 condition of one. 



19. COLEOCH^TE i?rt'3. 



Char. " Frond disciform, appressed, parasitic, formed of Jila- 

 m,ents radiating from a centre, generally conjoined. Fila- 

 ments articidated, dicliotomously 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 KoXeos, vagina, and yatrrj, seta. 

 1. COLEOCH^TE SCUTATA Breb. 



Plate LXXVII. Fig. 6. 



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

 describe a disciform frond. 

 /9 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. ph 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. J * 



/U. Oh A. 



" I have found this remarkable Alga in many places in f'^A 

 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- f^<^<^ 

 nium natans, and upon the Potamogeton natans. Its lenticular a^^^ 



