CRYPTOGAMIA. ALG. Fuctis, E. (2) Flat, ridles, 99 
PELLUCID. 
E (2) Flat, ribless, pettucrp. 
_ F. Membranaceous, without a mid-rib, simple, transpa- phylli’tis, 
rent, sword-shaped, border plaited and waved: stalk 
cylindrical, very short. 
Stackh. fase. ii. pl. 9. 
About a foot long and an inch broad. Fructification, ve- 
sicles immersed as in F. saccharinus. ‘Thought by Huds. and 
Lightf. to have been a var. of that plant, but the leaf is never 
wrinkled in the middle part, and irs texture is thin and mem. 
branaceous like an Ulva. It further differs from the F. sac. 
charinus in growing in clusters, though each plant has its proper 
root. ‘The F, saccharinus is dense and horny in its texture, 
even when young. 
F. saccharinus var. d Huds. var. 8 Lightf. p. 941, but not 
_ his reference to Bauhine. Fucus Phyllitidis folio. Ray. Syn. 40. 
At Weymouth, and Tenby; not uncommon on the South coast. 
Mr. SrackHouse. : 4 
F. Flat wedge-shaped, ribless, thick, very succulent. edu’lis. 
Leaves arising many in succession, of different sizes, from a 
discoid base. It is as thick as leather, large, veinless, trans. 
parent. © From a flat discoid base arise 2,3 to 8 or more leaves 
of different sizes, and of different ages, the largest are from 6 
to 9 inches high, on a thick compressed, or nearly cylindrical 
stem. ‘This stem suddenly dilates into a very wide, smooth, 
leather-like leaf, sometimes 4 or 5 inches over near the top, in 
mo like the lateral section of a wedge. When in fruit, the 
iddle of the leaf, betwixt the 2 coats is a vascular jelly, the 
vessels are annular tubes chained together. The surface at this 
time rises into conical protuberances perforated at the top. 
The above has been sometimes supposed to be the F. pal- 
matus. It is very common in Cornwall, and is probably the 
true Scotch Dulse, the Fucus scoticus, latissimus, edulit, dulcis. 
Ray Syz. 46. n. 30. This is eatable when raw, which is hardly 
the case with the F. palmatus, prolifer, laciniatus, and ciliatus ; 
all of which, though thin and transparent are extremely tough. 
It is also eaten after being pinched with hot irons, and then 
tastes like roasted oysters. Mr. StacxHouse. 
F. Membranaceous, forked, segments broad,  strap-puncta’tus. 
shaped : fructifications in oblong spots. 
_ Substance thin as gold-beater’s skin; colour ekg but 
perfectly pellucids It arises from a flat knobby base, of a con- 
siderable size, extending to the height of 6 inches. It is forked 
in its mode of growth, the segments from 1 to 1} inch broad, 
of the same breadth from one subdivision to another, The 
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