———— ee SS 
Ser. RHODOSPERME. Fam. Ceramiee. 
Priate CLIX. 
CALLITHAMNION BORRERI, 4. 
Grn. Cuar. Frond rosy, or brownish red, filamentous; stem either opake 
and cellular, or translucent and jointed; branches jointed, one-tubed, 
mostly pinnate (rarely dichotomous or irregular) ; dissepiments hyaline. 
Fruit of two kinds on distinct plants; 1, external ¢etraspores, se 
tered along the ultimate branchlets, or borne on little pedicels ; 2, 
roundish or lobed, berry-like receptacles (favel/e@) seated on the main 
branches, and containing numerous, angular spores. CAaLLITHAMNION 
(Lyngb.),—from «ards, beautiful, and Oapnoy, a little shrub. 
CatiitHaMNion Borreri ; much branched, sub-distichous, rigid or flaccid ; 
branches set with distichous plumules which are bare of ramuli in 
their lower half, and simply pinnate in their upper; pinne long, 
patent, subulate, simple (or ramulose at top), the lowermost longest ; 
articulations of the branches 2—5 times, of the pmne about twice as 
long as broad ; tetraspores roundish, sessile on the inner face of the 
pinne ; favelle two-lobed, near the apex of the lesser branches. 
CaLLITHAMNION Borreri, 4g. Sp. Alg. vol. i. p. 170. Harv. in Hook. Br. 
Fl. vol. i. p. 344. Harv. Man. p.110. Endl. 3rd Suppl. p. 34. Kiitz. 
Phyc. Gen. p. 372. | 
CALLITHAMNION seminudum, 4g. Bot. Zeit. 1827. p. 637. Ag. Sp. Alg. 
vol.u. p. 167. Harv. in Hook. Br. Fl. vol. u. p. 344. Wyatt, Alg. Danm. 
no. 187. J. dg. Alg. Medit. p.72. Endl. 3rd Suppl. p. 34. 
CERAMIUM pinnulatum, 4g. Syst. p. 139. 
CERAMIUM miniatum, 49. Syst. p. 141. 
ConFERVA Borreri, Sm. #. Bot. t. 1741. 
Has. On mud-covered rocks near low-water mark. Annual. Summer. 
Rather rare. Yarmouth, Mr. Borrer. Torquay, Mrs. Griffiths. 
Sidmouth, Wiss Cutler. Ilfracombe, Land’s End, and Swansea, J/7. 
Raifs. Falmouth, Miss Warren. Remarkably fine at Plymouth, 
Rev. W. §. Hore, Mr. Rohloff, and Dr. Cocks, Clontarf, Miss Balt. 
Howth, Miss Gower. 
Grocr. Distr. Atlantic shores of France and Spain. Mediterranean and 
Adriatic Seas. 
Deuscr. Fronds densely tufted, from one to four or pe inches in height, the 
larger specimens excessively branched, capillary, many times divided in an 
alternately pinnate manner; branches more or less distichous, long, clothed 
with three or four series of lesser branches, the last of which are set with 
alternate, distichous plumules, from a quarter to nearly half an inch in 
length. Plumules issuing at almost every joint, alternate, patent, slender, 
naked in the lower part to a pomt beyond their middle; the upper half 
pinnate, a pinna issuing from every joint. Pixne alternate, subulate, the 
lowest longest, the rest gradually shorter to the apex. On luxuriant speci- 
mens I have frequently observed slender, root-like fibres to issue from the 
lowest joint of a plumule (fig. 9). -drtieulations of the stem from three to 
VOL. II. K 
