CALLITHAMNION. 179 



main stems compound; capsules lateral, sessile." Smith, 

 E. Bot. t. 2465 ; Hook. Br. Fl. ii. p. 343. 



" Gathered on the Leach at Brighton by Mr. W. Borrer, who thinks it 

 maybe C. purpurascens of Hudson." Svi. — With this I am qnite unac- 

 quainted. Mrs. Griffiths informs me she has specimens gathered in Corn- 

 wall, so named by Daivson Turner, and Dr. Goodenough, that are identical 

 with Cal. Brodicei. 



18. C. fasciculatum, Harv. ; tufted; branches erect, flex- 

 uous, level-topped; plumules elongate, erect, linear-obovate, 

 truncate ; pinnae long and flexuous, the lowermost simple, 

 appressed, the upper erecto-patent, ramulose at the tip ; ar- 

 ticulations of the branches thrice, of the pinnae once or 

 twice as long as broad, sub-torulose. Harv. in Hook. 

 Br. Fl. ii. p. 343. 



At Yarmouth, Mr. Borrer. — 2 or 3 inches high, nearly naked at the 

 base, much branched and tufted upwards, bushy, very slender ; the apices 

 of the branches looking, to the naked eye, as if truncated or corymbose ; 

 branches long and flexuous, very erect, their upper half closely plumulate, 

 the plumules long and appressed. Colour a fine purple-red. Articulations 

 of the main stem nearly opake, composed of jointed fibres. Tetraspores 

 rare, sub-solitar}', elliptical, at the base of the pinnae. This description, 

 which I now transfer from Br. Fl. was taken from a specimen in Sir W. 

 Hooker's herbarium, marked C. Borreri. It did not appear to me to be 

 the same with Borreri, a species with which, at that time, I was but little 

 acquainted, but having in the interval seen many anomalous varieties of 

 the latter, I fear that the present must be looked on as a very doubtful spe- 

 cies. I have never seen more than Mr. Borrer's specimen. 



19. C. Borreri, Sm. ; sub-simple below, much branched in 

 a fan-like manner above, rigid or flaccid ; upper branches set 

 with distichous plumules which are bare of ramuli below, 

 closely pinnate above ; pinnae long, patent, simple (or ramu- 

 lose at top), the lowermost longest ; articidations of the 

 branches 2 — 5 times, of the ramuli about twice as long as 

 broad ; tetraspores roundish, sessile in the inner face of the 

 pinnae. Harv. in Hook. Br. Fl. ii. p. 344 ; Harv. Phyc. 

 Brit. /. clix. Conf. Borreri, E. Bot. #.1741. Cal. seminu- 

 dum, Ag. ! Harv. I. c. ; Wyatt, Alg. Danm. No. 187. 



On rocks in the sea, rather rare. Yarmouth, Mr. Borrer. South of 

 England, in many places. East coast of Ireland, Miss Ball and Miss 

 Gower. — Filaments sub-simple and somewhat bare of branches, or merely 

 set with short ramuli below, much branched in a fan-like manner above, 

 the branches having a roundish general outline, the tips even of the lesser 

 divisions being singularly blunt and rounded ; upper branches furnished 

 with distichous, alternate plumules, which are bare of ramuli below, and 

 closely pinnate in their upper half, the lowermost pinnae being longest, and 

 some of them occasionally pinnulate towards the tips. Substance either ri- 

 gid or very flaccid and membranaceous, a diff"erence which probably depends 



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