300 ALGM INARTICULATE. [Gigartina. 



v. 1. p. 308.— #. lichenoides, Grev. Crypt. Fl. v. 6. t. 341. (not 

 Linn, and Turn.) 



Sea-shore at Sidmouth, Mrs. Griffiths. ©. August.— No one has had 

 the good fortune to meet with this Alga except Mrs. Griffiths, to whom 

 I am indebted for very fine specimens. To me, its nearest affinity (ex- 

 clusive of the fructification) appears to be with G. pwpurascens. It is 

 nearly of the same colour and texture, but stouter and shrinking very 

 remarkably in drying. In colour and substance it is strikingly 

 different from the Fucas lichenoides of Linn, and the Hist. Fuc, to 

 which, on account of the similarity of the ramification, both Mrs. 

 Griffiths and Dr. Greville were disposed to refer it. The specimens 

 bear both the kinds of fructification of the Genus. 



4. G. erecta, (small upright Gigartina); frond cylindrical 

 dichotomous erect, branches sub-simple, capsules globose, gran- 

 ules in terminal pod-like ramuli. Gracilaria erecta, Grev. Alg. 

 Brit. p. 124. t. 14. — Sphcerococcus? erectus, Grev. Crypt. Fl. 

 t. 357. 



Flat rocks and half-immersed in sand, on the coast of Devon as at 

 Torbay and Sidmouth, Mrs. Griffiths. TJ.. February, March.-— Another 

 of the many interesting discoveries of Mrs. Griffiths, who has long dis- 

 tinguished it by the appropriate name of " saffocata" growing, as it does 

 in a tufted manner, and more than half buried in the sand. It is slen- 

 der, erect, rigid, 2 — 4 inches high, and bears, besides the true capsules, 

 lanceolate, pod-like receptacles, containing oblong scattered granules 

 imbedded in the circumference. 



5. G. pistilldta, Lam our. (pestle-bearing Gigartina); frond 

 horny linear compressed vaguely dichotomous and beset with 

 numerous subulate distichous horizontal ramuli which bear the 

 capsules at or near their extremities. — Grev. Alg. Brit. p. 146. — 

 Fucus pistillatus, Gmel. — F. Gigartinus, Linn — Turn. Syn. 

 Fuc. p. 280, Hist. Fuc. t. 28. E. Bot. t. 908. 



Rocks on the coast of Cornwall, Dr. Wenman. Mount's Bay, Dr. 

 Macculloch. Padstow, Mm Hill. I have specimens from the same 

 coast, gathered by Mr. Sconce. — 4 — 6 inches high, remarkably horny and 

 rigid, of an opaque bluish-purple colour. One of the most distinct and 

 rarest of the British Algae. 



6. G. acicularis, Lamour. (sharp-pointed Gigartinci); frond car- 

 tilaginous cylindrical filiform irregularly dichotomous, branches 

 divaricated beset with often unilateral patent acuminated ramuli, 

 capsules sphaerical sessile scattered. — Grev. Alg. Brit. p. 147. 

 t. 16. — Sph&rococcus acicularis, Ag. Sp. Alg. v. I. p. 322. — Fu- 

 cus acicularis, Wulf.— Turn. Hist. Fuc. t. 126. E.Bot. t 2190. 



Among the rejectamenta of the sea near Belfast, Mr. Templeton — 

 Rocks, Cornwall, Mr. Rashleigh. Several places in Devon, Mrs. 

 Griffiths. Plymouth, and rocks in Cawsand bay, R. Sconce, Esq. Sid- 

 mouth, Miss Cutler and Mrs. Griffiths. If. Fructification January. — 

 2 — 4 inches in length, much spreading. Colour a deep reddish-purple. 

 Mrs. Griffiths has favoured me with capsuliferous specimens and others 

 with obscure, scattered granules in some of the ultimate ramuli ; which 

 are probably more evident in a recent state. 



