86 
C'RYPTOGAMIA. ALGAL Fucus. 
Mr. Stackhouse has also found vesicles under the surface containing reti¬ 
culated jelly, like those in F. digit atns. 
(Great Furbelowed Fucus. F. hulbosus. Huds. 579. Turner. F. poly - 
schides. Lightf. Stackh. Laminaria bidbosa. Agard. Hook. E.) Rocks 
and stones in the sea; on the coast of Cornwall, frequent. 
P. Jan.—Dec. 
(F. sarnien'SIS. Frond, sub-membranaceous, flat, without mid-rib; 
laciniated in a palmate manner; proliferous from its margin ; 
segments linear: tubercles spherical, immersed. 
Turn. Hist. 44— Both. Cat. iii. t. 1— E. Bot. 2132. 
Fronds numerous, nine inches or a foot long. Fructification , according to 
Roth, roundish black tubercles, dispersed without order, of the size of 
poppy seed. Colour purplish, semi-transparent, very fugitive; darker 
when dried; on exposure to the sun turning yellowish, and at length 
white. Substance tough. Too generally found mutilated. 
Guernsey Fucus. Sphcerococcus Sarniensis. Turn. Hook. In Dublin Bay. 
Dr. Scott. On the Scotch coast. Dr. Walker. Sent from Guernsey to 
Prof. Mertens. Coasts of England. Messrs. Woodward and D. Turner, 
by whom it has been several years observed, though only recently ascer¬ 
tained as a new species. Turner and Roth. E.) 
F. digita't us. Without a mid-rib; hand-shaped: segments sword- 
shaped: stalk cylindrical. 
(Turn. Hist. 162. E.)— Stackh. 3— FI. Dan. 392— (E. Bot.227-1. E.)— 
Gunn. 1. 3. 
Stem as thick as a walking stick. Linn. Stem cylindrical, compressed, one 
to two yards high. Gunner. Norv. i. 34. It tapers much toward the 
top, and then suddenly expands into a leaf of a foot or more in 
breadth. This leaf is divided into a number of segments, from four to 
twelve, each of which is sometimes a yard long, and tapers to a point. 
The substance thick, leather-like, ribless, with a fructification of thin in¬ 
flated pellicles produced without order on the surface, containing a 
mucilaginous fluid, but without apparent granules. The plant when 
fresh has a rich brown yellow colour, and appears smooth and shining as 
if varnished. Stackhouse. Ner. Brit. p. 6. 
The pellicles are not on the surface, but imbedded. They grow close toge¬ 
ther, are often confluent, or as it were quilted. The jelly they contain, 
under high magnifiers, appears reticulated. Communicated by Mr. 
Stackhouse, since the publication of his first Fasciculus of Marine Plants. 
When the whole plant is taken, out of the water and held by the stem, it 
not unaptly resembles a flag-staff* and flag ; the latter cut horizontally 
into strips. 
Sea Girdles, or Hangers. (Laminaria digitata. Hook. E.) Stones and 
rocks in the sea, On the coasts of Cornwall, plentiful, Stackhouse. 
P. Jan.—Dec.* 
(F. MAMMiLLo'bUS. Cartilaginous, forked, dilated upwards, sharp- 
pointed, clothed on both sides with numerous mammillary fruit¬ 
bearing tubercles. E. Bot. 
Turn. Hist. 218— E. Bot. 1054— II. Ox. xv. 8. row 1. 13. 
* Boiled tender and eaten with butter, pepper, and vinegar, it is said by Gerard to 
be good food. (It also furnishes an useful manure, and kelp. E.) 
