The English flora - SeaweedAfrica

—
Lmmnaria.] ALG/E INARTICULATE. '-'/I
some species be considered as such. Fructification, as far as
hitherto known, either seeds mixed with a mass of vertical, jointed
filaments, or roundish granules, without filaments ; forming, in both
cases, dense spreading spots or sori, on the surface of some part of
thefrond. Structure densely fibroso-cellular, without any appearance
of reticulation. Grev.
7. Alaria. Grev. Alaria.
Frond membranaceous, furnished with a percurrent, cartilaginous
midrib, the stem pinnated with distinct leaflets. Fruc-
tification ; pyrifbrm seeds, vertically arranged in the incrassated
leaflets. Grev. Alg. Brit. p. 2o. t. 4 —Name; ala, a wing, from
the winged base of the frond.
]. A. csculenta, Grev. (esculent Alaria); frond linear-ensiform
entire at the margin, pinna? linear-oblong fleshy- Grev. Alg.
Brit. p. 25. t. 4. Agarum csculentum, Borg.— Lamiuarh
iscdenta, Lyngb.—Ag. Sp. Alg. v.l.p. 110. Fucus exuh Light
Scot. p. 938. t. 28. E. Bot. t 1759. Turn. Sgn. Fuc. p. KM.
Hook, in Fl. Lond. cum Ic.
Coasts of England, Scotland and Ireland, especially in sheltered rocky
bays. Winter and Spring. ©.—Frond 2—\2 and even 20 feet long, of
a greenish-brown colour. In Scotland it is known by the name of
Badder-locksy and is eaten both by men and cattle ; the former prefer
the midrib, rejecting the more membranaceous portion.
—
—
8. Laminaria. Lamour. Laminaria.
Frond coriaceous (rarely membranaceous), plane, expanded,
without a midrib. Fructification : seals or granules forming
dense sori or spots, and imbedded in the thickened surface
of *nme part of the frond. Grev. Alg. Brit. p. 27. t. .">— Named
from lamina, a thin plate, characteristic of the frond.
1. L. digitdta, Lamour. (digitatedLaminaria
),• stipes woody cylindrical
expanded at its apex into a cartilaginous flat roundish
frond deeply deft
M
into numerous ensiform mostly Bimple
,, llll ,
llt s._.'!y. Sp. Alg- r. I. /;. \\'2. (inc. Mg. Brit. /.. 27.
/. ;,.— Facta diaitahu, Linn.— Turn. Sgn. Fuc. p.
l-nc t. L62. /:.'/>/./. l'l'74.
Set-shore, especially in deep water. .— >. — i
2J
2
f
lM»7, Hist.
i'« el or more in length,
(.live-brown. Occasional specimens are found with the segments connected
at the top, from which spring a new sessile frond. This is the
Tang or Tangle of the Scotch; Sea-girdles of the English. The young
frona is ovate r elliptical ami entire, and then much resembles small
plant of L. sn, , inn inn.
•2. L hnlhnsit, Lamour. (bulbous Laminaria); root hollow
swollen into a bulb-like form and tuberculated, stipes, plane
waved once-twisted at it- base, expanded into n Bat cartilaginous
oblong or rounded frond, deep!} cleft into numerous ensiform
jments- Aq* s K All J '' ]
'
- - i /'• .
'
L ( '" r - '
/;
'
/;- *9'