114 SYNOPSIS OF BRITISn BEAWE] 



spherical, scattered on the branches, Lamx. Ess. p. 49. 

 (Atlas, PL L. Fig. 226.) 



^orc<rcu< aciculans, Ag. Fueua acicularis, Wulf. 



J( rsey and Boutfa coast of England. On submarine 



near Low-water mark. Annual. Winter. Kaiv. 



This species is rare in England, bul abundant on the 

 shores or France and Spain and in the Mediterranean, and 



been collected by Dr. Hooker at Tasmania. 



L95. Teedii (Teed's Gigarfiua) ; frond cartilagineo-membrana- 

 ccous, flaccid, flat, linear, acuminate, repeatedly pinnate ; the 



pinna? opposite or alternate, horizontally patent, distichous, 



set with horizontal, spine-like ramuli ; eoccidia globose, on 



the ramuli, sessile, Lamour. Ess. p. 49. t. 4.f. 11. (Atlas, 



PI. XLIY. Fig. 201.) 

 Chondracanthus Teedii, Ktz. Rhodymenia Teedii, Grev. Sphee- 



roeoccus Teedii, Ag. Fueus Teedii, Roth. 

 Hah. Torbay. On rocks, at the extreme limit of low-water. 



Perennial. Very rare. 

 This is one of the rarest and most interesting of the 

 British Seaweeds. It was first found in England by Mrs, 

 Griffiths, in the year 1811, on a small rock in Elberry 

 Cove, growing in scattered tufts on spots left bare at the 

 extreme limit of low-water, of spring tides ; and on this 

 rock it continues to grow, and may generally be found in 

 greater or less perfection every summer. In warm sum- 

 mers the plants are larger, more branching, and with 

 broader membranes, and the tufts more numerous. Fruc- 

 tification has never been observed in this locality, and 

 perhaps this is the cause why the plant appears never to 

 have extended itself. On the opposite coast of Normandy, 

 and southwards along the French coast, it is much more 

 abundant, annually producing fruit ; and in the Mediter- 

 ranean G. Teedii is a very common plant. 



196. mamillosa {The mamillose Gigartina) ; frond flabelliform, 

 dichotomous, plane, channelled ; segments wedge-shaped, 

 cleft ; tubercles roundish or ovate, pedicellate, scattered 

 over the disc of the frond, J. Ag. Alg. Medit. p. 104. 

 (Atlas, PL XLII. Fig. 194.) 



Mastocarpus mamillosus, Ktz. Chondrus mamillosus, Grev. 

 Spluerococcus mamillosus, Ag. Fucus mamillosus, Good, 

 and Woodw. F. Polymorphus, Lam. F. echinatus, Stack. 

 F. canaliculars, var., Huds. F. ceranoides, var., Light/. F. 

 alveolatus, Esper. 



Hah. On rocks near low-water mark. Perennial. Winter. 



