CRYPTOGAM! A. ALGAL Fucus. 
95 
This plant is subject to great variation, as is evident from the figures. It 
is green, purple, or brownish-yellow. Cartilaginous in the narrower, 
membranaceous and pellucid in the broader parts. Branches ribless, all 
of one height; from two to four inches high. It has been considered by 
our botanists as the F. ceranoules of Linnaeus, but besides other diffe¬ 
rences, its want of terminating tubercles or masses of seed-vessels will 
always distinguish it. 
(Chameleon Fucus. Sphcerococcus m.embranifolius. Agard. Hook. E.) F. 
ceranoules. Huds. and Gmel. not of Linn. On the Sussex and Cornish 
coasts. 
Var. 2. The ends membranaceous, widened, torn.. R. Syn. 44. n. 19. 
Stackh. ii. 11— Gmel. 22. 3— and ih. 23. 
Four inches high; membranaceous, pellucid, fine red. Stem flat, nervous, 
enlarged on each side with membranaceous rudiments, which expand 
into broad leaves ; these leaves are hand-shaped with many clefts, waved, 
scolloped, ribless, irregularly divided, clefts differing in depth, generally 
three at the end, which is rounded. Gmelin. Fuc. 183. 
F. lacerus. Linn. F.Palmetta. Gmelin. Sea shores, common. 
Var. 3. Fructifications on fruit-stalks. Found by Mr. Stackhouse on the 
Cornish coast, at Fowey. Sept. 
(Mr. Turner in his beautiful history of the genus has made an elaborate 
arrangement to elucidate these complex species, in which he comprehends 
the present and the preceding as one; and further remarks, there can¬ 
not be the least doubt but that all the different forms of F. crispus are 
derived from one common origin j and so far from its being possible to 
divide them into several species, there is scarcely any limit to be placed 
to the varieties, nor can two specimens easily be picked up which entirely 
agree together; though any botanist, however conversant with the study 
of the Algse in general, would unquestionably be led into error, if called 
upon to form an opinion from only two individuals of F. crispus , and those 
the most dissimilar that can be found.” E.) 
(F. glandulo'sus. Membranaceous, fiat, nerveless, linear, branched; 
.branches alternate, decurrent, the ultimate ones bifid, and in¬ 
curved ; seeds immersed in the oblongo-lanceolate apices of the 
branches. Turner. 
Turn. Hist. 38— E. Bot. 2135. 
Colour bright red, strongly mixed with pink, semi-transparent; when dry, 
bright red. Substance flaccid, extremely tender. Under the microscope 
beautifully reticulated. Plant one to two inches long. 
Incurved Pinky Fucus. This species has as yet been but rarely 
observed. One specimen is to be seen in the Banksian Herbarium, said 
to have been found in the English Ocean, and it has been more recently 
discovered among the rejectamenta of the sea at Budleigh and Torquay 
by Mrs. Griffiths. Sept. E.) 
F. pinnatif'idus. Leaves gristly, flat, ribless, branched,* toothed 
with winged clefts: teeth callous, blunt. 
(Turn. Hist. 20 — E. Bot. 1202. E.)— Stackh. ii. 11— Gmel. 16. 2 and 3— H. 
Ox. xv. 8. row 2. 2. * 
Substance cartilaginous, pellucid. Stems roundish, many together, spring¬ 
ing from a roundish base or fixed to stones. Leaves winged, leafits 
