210 CONFERVA. 



At Yarmouth, on a floating piece of deal, Sir W. J. Hooker. Filaments 

 3 or 4 inches long, twice as thick as those of C. area, of a splendid verdi- 

 gris-green colour, which is fully preserved in drying, very gelatinous, ad- 

 hering most closely to paper. Dissepiments much contracted. A highly 

 beautiful plant, which, I believe, has never been found more than once. 



11. C. bangioides, Harv.; filaments elongated, very slender, 

 soft and lubricous, wavy ; joints about twice as long as broad, 

 containing a compact, dark green mass, which is frequently 

 bipartite ; dissepiments broad, pellucid. Harv. Phyc. Brit, 

 t. cclxviii. 



In the sea, on rocks, &c. Breakwater, Plymouth, Mr. Blatch. Tor- 

 quay, Mrs. Griffiths. Port Ballantrae, North of Ireland, Mr. Moore. 

 Tufts 3 6 inches long, of a dark green colour, lubricous, and resembling 

 Bangia fusco-purpurea. Mixed with this plant Mrs. Griffiths frequently 

 finds Lyngbya speciosa and a Conferva twice the diameter of C. bangioides. 

 with contracted, bead-like joints, having most of the characters of C. 

 Youngana, but much larger than that species usually is. 



12. C. Youngana, Dillw. ; filaments short, tufted, straight, 

 bright green, somewhat rigid,; articulations once or twice as 

 long as broad, dissepiments finally contracted. Harv. I. c. 

 p. 354; Dillw. t. 102. Conf. isogona, E. Sot. t. 1930. 



On rocks, &c. near high-water mark ; first discovered by Mr. W. W. 

 Young, on rocks near Dunraven Castle, Glamorganshire. Filaments an 

 inch long, forming small tufts, somewhat rigid (as compared with C. colla- 

 lens), obtuse. Articulations variable in length, at first cylindrical, after- 

 wards becoming contracted in a beaded manner. 



*** Of doubtful affinity. 



13. C. clandestina. Berk. ; " threads articulated, free, dis- 

 tinct, uniform ; bearing reproductive granules within the 

 joints." Berk. Gl. Alg. t. 13, /. 1. 



" On the under side of stones in mud highly impregnated with putrifying 

 marine substances at Weymouth,'' Rev. M. J. Berkeley. Filaments very 

 minute, about a line long, at first appearing " of an opake white upon the 

 dark mud-stained stone, gelatinous and flexuous, nearly equal throughout. 

 Under the lens they are hyaline, and are furnished with joints about thrice 

 as long as broad, with very evident and rather broad dissepiments and 

 distinct granules. Sometimes the granules are wanting, probably through 

 age.'' Berk. Probably, as Mr. Berkeley observes, this obscure plant be- 

 longs rather to the Leptomiti, or at least " makes a very natural transition 

 from the more distinctly articulated Leptomiti growing on decayed vegeta- 

 bles to the real Conferva." 



