294 ALGjE INARTICULATE. [Rhodomela. 



If.. Fructification January and March. — In English Botany, and in Mr. 

 Turner's Hist. Fuc., the capsules are represented and described as urce- 

 olate. Dr. Greville finds them to be broadly ovate. 



30. Rhodomela. Ag. Rhodomela. 

 Frond cylindrical or compressed, filiform, much branched, 

 coriaceo-eartilaginous (the apex sometimes involute). Fruc- 

 tification ; — subglobose capsules, containing free, pear-shaped 

 seeds ; and pod-like receptacles, with imbedded ternate granides. 

 Grev. Alg. Brit.pJl02. t. 13. — Name; go^og, red, and^Aag, black; 

 in allusion to the change of colour from a purplish-red when 

 recent, to black, when dry. 



* Summit of the branches straight (not involute). 



1. R. Lycopodioides, Ag. (Club-moss Rhodomela); frond 

 terete mostly simple every where covered with closely imbri- 

 cated filiform patent ramuli generally forked at their apices and 

 intermixed with the setaceous remains of former branches. — 



Ag. Sp. Alg. v. 1. p. 377. Grev. Alg. Brit. p. 102 Gigar- 



tina Lycopod., Lyngb. — Fucus Lycopod., Linn. — Turn. Syn. Fuc. 

 p. 343, Hist. Fuc. t 12. E. Bot. t. 1163. 



On the stems of Laminaria digitata, Sussex and Devon, but chiefly 

 on the northern shores of Great Britain. 2£. — May — July. — 4 — 8 in- 

 ches long. 



2. R. subfusca, Ag. (brownish Rhodomela) ; frond filiform 

 much and irregularly branched, branches subulate pinnate and 

 subalternate often clustered. Ag. Sp, Alg. v. I. p. 378. Grev. 

 Alg. Brit. p. 103. — Gigartina subfusca, Lamour. — Lyngb. — 

 Fucus subfuscus, Woodw. in Linn. Trans, v. I. p. 131. t. 12. 

 Turn. Syn. Fuc. p. 350, Hist. Fuc. t. 10. E. Bot. t. 1 164. 



Coasts of Great Britain •, on rocks and the larger Algae. $ . Fructifica- 

 tion February and in Summer. — An extremely variable plant at different 

 seasons of the year; being much injured in winter and destitute of the 

 branchlets. 



** Summit of the branches involute* 



3. H.^pi?iastroides, Ag. (Pinaster-like Rhodomela) ; frond terete 

 branched, the branches clothed with numerous secund spuriously- 

 jointed ramuli, recurved at the apex. — Ag. Sp. Alg. v. I. p. 381. 

 Grev. Alg. Brit. p. 104. t. 13 — Gigartina Pinaster, f^yngb. — 

 Fucus pinastroides, Gmel. — Turn. Syn. Fuc. p. 346, Hist. Fuc. 

 t. 11. E. Bot.t. 1042. 



On rocks in the southern coasts of England, frequent. Near Dublin, 

 Dr. Scott. If..— Winter.— 6— 8 inches high. 



4. R. scorpioides, Ag. (scorpions tail Rhodomela) ; frond erect 

 capillary much divided with horizontal branches, the uppermost 

 singularly involute at the extremity. — Ag. Sp.Alg.v. I. p. 380. 

 Grev. Alg. Brit p. 105. — Fucus scorpioides, Huds. Angl. ed. 1. 



