Ser. K hodospeemeæ. Fam. Ceramiea.
P la t e C C X I I .
CALLITHAMNION PEDICELLATUM, Ay.
G e n . Chak. Frond rosy o r b row n is t-r e d , filamentous, stem e ith e r opake
a n d c ellular, o r tra n s lu c en t a n d jo in te d ; b ran ch e s jo in te d , on e -tu b ed ,
m o s tly p in n a te (rarely d ichotomous o r irreg u la r) ; dissepiments h y a lin
e . Friiii o f two k in d s , on d is tin c t p la n ts ; 1 , ex te rn a l te tra sp o re s,
s c a tte re d a lo n g th e u ltim a te b ra n c h le ts, or b o rn e o n little pedicels ;
3, ro u n d ish o r lo b ed , b e rry -h k e receptacles {favellce), sea ted on th e
m a in b ran ch es , a n d co n ta in in g n um e ro u s , an g u la r spores. Ca l l ithamnion
{Lyngh),—from «oXos, heautiful, a n d hagvtov, a i
W.H E. aeletliiY - Reove,"Boiil..v.i iS
Callithamnion pedicellatum; stems setaceous, pellucid, jointed, loosely
and irregularly divided; branches furnished with short, alternate,
sparingly dichotomous ramuli; apices very obtuse; articulations
variable, mostly very long ; tetraspores(?) solitary, elliptical or pear-
shaped, axihary, stalked.
Callithamnion pedicellatum, Ag. Sp. Alg. vol. ii. p. 174. Earv. in Hook.
Fl. Brit. vol. ii. p. 347. Harv. in Mack. Fl. Hib. part 3. p. 317. Harv.
J&». p. 114. Wyatt, Alg. Damn. no. 94. J. Ag. Alg. Medit. Tÿ.13. Kütz.
Phyc. Gen. p. 371. Fkdl. 3rd. Supp. p. 34.
Callithamnion clavatum, Ag. Sp, Alg. vol. ii. p. 180. J. Ag. Alg. .
p. 73. Kütz. Phyc. Gen. p. 371. Mont. An. Sc. Nat. 1839. p. 166.
3rd, Supp. p. 34.
Callithamnion Perreymondii, Buby. Mem. vol. ii. t. 4. f. 5.
Callithamnion botryticum, Be Not. (fide Lenorm.)
Gm p f it h s ia irregularis, Kütz. Action, 1836.
Ceeamium pedicellatum, Ag. Syst. p. 137.
Ceeamium clavægerum, Bonn. Hyd. loc. in An. Mus. Par. 1836. p. 90.
Coneekva pedicellata, B. Bot. t. 1817. Billw. Gonf. t. 108.
H a b . On rocks and wood-work, near low-water mark, mostly in deep
rock-pools ; sometimes dredged in from 4 -7 fathoms. Bather rare,
but found all round the coast. Annual. Summer. Brighton,
Mr. Borrer. Torbay &c., Mrs. Oriffiths. Sidmouth, Miss Cutler.
Falmouth Bay, Miss Warren. Salcombe, Carnarvon, and Milford
Harbour, Mr. B a lfs. Jersey, Miss White and Miss Turner. Bantry
Bay, Miss Hutchins. Malbay, Vaientia, and Wicklow, W .II.H .
Portaferry and Bangor, Belfast Bay, M r. W. Thompson. Eoundstone,
Mr. M ‘ Calla. Ferriteris Cove, Mr. W. Andrews. Howth, Miss
Cower. Orkney, Rev. J . Pollexfen. Dredged in Cah Sound, in seven
fathoms, Messrs. Thomas and M ‘ B a in . Saltcoats and Ardrossan
(on the pier). Rev. B . Landsborough.
Geogk. D is t e . Atlantic shores of France. Mediterranean Sea.
D esoe. PLoot discoid, or somewhat fibrous. Fronds densely tufted, from two to
six or eight inches high, as thick as hogs’ bristles, irregulaily divided in a
manner between alternate and dichotomous; branches sometimes nearly
simple, long and virgate, sometimes repeatedly branched, and somewhat
flabellate, more or less fastigiate, seldom quite naked, generally furnished
at each joint with short, forked, or twice or thrice dichotomous, alternate
ramuli. Ultimate divisions of the forked ramuli often incurved, cylindrical,
Z 2
' i