This is one of the rarest and most interesting of the British 
Sea-weeds. 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 summers the plants are larger, more branching, 
and with broader membranes, and the tufts more numerous. 
Fructification 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 south- 
wards along the French coast, it is much more abundant, annually 
producing fruit; and in the Mediterranean G. Zeedii is a very 
common plant. With us it seems to have reached nearly its ex- 
treme northern limit. 
This plant is closely allied to G. Chamiseoi, of Peru, and G. 
Chauvini, of extra-tropical South America, from some varieties of 
which it is not always easy to separate it. In Britain it may be 
confounded with some states of Gelidium corneum ; but the sub- 
stance is much softer, and the structure, as seen in thin slices 
placed under a microscope, extremely different. 
Fig. 1. Gieartina TEED :—of the natural size. 2. Part of a fertile frond 
(from a foreign specimen) with tubercles in the ramuli. 3. Section ofa 
tubercle. 4. Longitudinal section of the frond :—all magnified in a greater 
or less degree. 
