CRY PTOGAMI A ALG.E. 253 



2. C.fiacca, bright green, tufted ; filaments unbranched, flaccid, 

 equal, flexuose ; joints nearly twice as long as broad, their parti- 

 tions pellucid DILLW. Syn. 53. t. 49. Eng. Bot. t. 1943. 



Hob. Parasitical on fuci, particularly on Fucus siliquosus, 

 in pencil-like tufts, about an inch long. 



3. C. flaccid^ olive-green, tufted ; filaments unbranched, flac- 

 cid, straight, tapering, with numerous articulations equal in 

 length and breadth DILLW. Syn. 53. t. c. Eng. Bot. t. 2310. 



Hob. On Fucus vesiculosus in short pencil-like tufts, fre- 

 quent. 



4. C. fucicola, yellow-brown ; filaments short, straight, simple, 

 tufted ; articulations twice as long as broad GREV. Fl. Edin. 

 316. DTLLW. Syn. 53. t. 66. 



Hob. On Fucus vesiculosus in tufts of a dirty yellow or 

 ochre colour, about an inch long. 



5. C. tortuosa, green ; filaments simple, capillary, even, rather 

 rigid, curled, twisted and entangled ; joints cylindrical, thrice as 

 long as broad Eng. Bot. t. 2220. DILLW. Syn. 46. t. 46. 



Hob. In pools of salt water at the highest water mark ; 

 and on the margins of the Tweed within the influence 

 of the tide. 



In the water Conf. tortuosa appears like a flock of fine wool, 

 but it is often left dry in wide masses, and may be taken up 

 in large pieces. It is not lubricous, nor does it in general 

 adhere to paper, but I have specimens which do so very 

 closely ; and the latter, Mr ARNOTT informs me, agree 

 with his authentic English ones. 



6. C. capillaris, dark green, coarse, rigid ; filaments long, irre- 

 gularly branched, the ultimate branchlets spreading, short, taper- 

 ed ; articulations 3 times their diameter, with pellucid joints. 

 Eng. Bot. t. 2364. C. crispa, DILLW. Syn. 46. t. B. C. rivularls 

 of AGARDH, according to Mr ARNOTT. 



Ilab. Small streams. In a little stream which runs through 

 a wooded ravine between Ladykirk and Upsetlington, 

 plentiful. 



Grows in large masses, coarse and rigid to the touch. The 

 filaments are as thick as ordinary sewing thread, attain 



