Dasua.] ALGiE CONFERVOlDEiE. 335 



lanceolate receptacles (Stichidia) containing granules, set in 

 transverse fascia — Name dxrvs, hairy ; in allusion to the slender 

 ramuli. 



1. D. coccinea, Ag. (scarlet Dasya); stems robust irregular- 

 ly branched, branches bipinnate, pinnulte fasciculato-nmltifid, 

 articulations of the ramuli as long as broad. — Ag. Sp. Alg. — 

 Conferva coccinea, Dillw. Conf. t. 36. E. Bot. t. 1055. — Hut- 

 chinsia coccinea, Ag. Syst. Alg. v. 2. p. 119. — Asperocaitlon 



coccin., G'rev. Crypt. Eclin. p. 307 [3. tenuior (Dillw.') ; more 



slender in all its parts. — y. denudata ; branches naked, ramuli 

 squarrose minute subsimple. Ceramium patens, Grcv. Crypt. 

 Fl. t. 2G1, (according to authentic specimens.) 



Abundant on the shores of England and Ireland; more rare in Scot- 

 land. Firth of Forth, Dr. Greville. — 0. Devonshire, Mrs. Griffiths. 

 Bantry Bay, Miss Hutchins. — y. Appin, Capt. Carmichael. Bute, Dr. 

 Greville. Whitsand Bay, Mr. Arnott. — The variety 7., were it not that 

 intermediate states occur, might easily be mistaken for a distinct spe- 

 cies ; but its characters merely result from accident or disease. 



2. D. ocelldla, (ocellated Dasya); stems subsimple beset on 

 all sides with long erecto-patent dichotomous penicellate ramuli, 

 articulations 2 — 4 times longer than broad, receptacles lanceo- 

 late attenuate. — Ceramiion oceUatum, Grateloup. — Hutchinsia 

 ocellata, Ag. Syst. Alg. p. 158. — Dasya simpliciitscula, Ag. Sp. 

 Alg. v. 2. p. i22. 



On marine rocks, rare. Pier at Torquay, Mrt. Griffiths. Wbitsand 

 Bay, Cornwall, Mr. Arnott. — Steins tufted, 1 — 2 inches high, simple or 

 with 3 or 4 branches, thickish, opaque, inarticulate, densely striated 

 longitudinally, ramuli spreading on all sides, crowded towards the upper 

 part, scattered below, 3 to 5 lines in length, articulate, several times 

 die) itomous, the apices elongated. Lower articulations of the ramuli 

 once or twice, upper 1 — ■> times longer than broad; apices obtuse. 

 Colour a fine purple. Receptacles attenuato-lanceolate, acuminate, 

 nearly as long as the ramuli, Bessile or Bhortly pedicellate, seated in the 

 dichotomies of the ramuli, containing dark purplish granules, closelj set 

 in transverse fasciae. These receptacles are abundantly produced ; the 

 capsules 1 have never 



3. I). HutchtnsiiB, (Miss Hutchins* I)(is)/d); slums much and 



irregularly branched beset on all sides with very short divari- 

 cating- dichotomous ramuli, articulations about twice as long as 

 broad, receptacles oblong Buddenly acuminate. — Conferva At* 

 buscula, Dillw. Conf. t. (,'. (eaxl. t. 85.) 



Bantrj I' Hutckint. Shores of Orkney and Caithnesi 



/.' v Miltown Malbay, and Kingstown Harbour, Dub- 



lin Bay, /r. II. llm vtu. — Stems tufted, 8 — I inches high, branches 

 t with dichotomous divaricating ramuli, about a lane in 



length, giving the plant a nam. led appearance. < olour a pale reddish, 



brow u, substance flaccid. Fructification of 2 kinds : — I. Ovato 



with a produced BUDCJ liudrical neck, rather BCUte, discharging l hi 

 n terminal DOTC roundish or pynlbnu -< ptaclefl obi 



suddenly acuminate, or obtuse, n ith a mucro, i ontaining ternate granu 



