452 
and has generally no marginal area at all; on the other hand, it 
has sometimes a smooth, median stripe. The lamina is thick and 
of a tough, leathery consistency. The Faeroese specimens differ 
from those mentioned by Kj ell man in N. I., p. 287 (230) in always 
having a short stem which passes insensibly into the lamina. With 
regard to the size of the specimens referred to this form the fol¬ 
lowing measurements may serve as an example: — 
Length of plant Breadth of lamina Length of stem 
2 metres 8 cm. 6 cm. 
1 metre 13 cm. 2 cm. 
The specimens referred to f. bullata are often larger and espe¬ 
cially broader as they have a fairly distinct, strongly waved 
marginal area. Two of the specimens which I measured were of 
the following sizes: — 
Total length Breadth of lamina Length of stem 
2 m. 10 cm. 20 cm. 9 cm. 
2 m. 30 cm. 20 cm. 8 cm. 
Lastly, the specimens referred to f. grandis are marked by their 
thinner and smoother or at any rate only slightly rugose lamina, 
which can attain to a fairly great breadth and has generally a 
rather distinct marginal area. With regard to the size of the spe¬ 
cimens referred to this form the following measurements may serve 
as a guide: — 
Total length Breadth of lamina Length of stem 
2 m. 35 cm. 13 cm. 
2 m. 15 cm. 37 cm. 4 cm. 
I have also referred a few large specimens which were found 
growing in shallow water at the head of Trangisvaagfjord to this 
form. The lamina was highly rugose and had a strongly waved 
margin. The consistency of the lamina was in the middle, thick 
and leathery; in the margin, thin and membranaceous. 
One specimen measured as follows: — Length of lamina 2 
metres; breadth 75 cm.; stem 5 cm. 
Forma linearis is met with in the most exposed situations, 
e. g. on the south-western side of Sumbo Holm (Syd.); it occurs 
here near low-water mark and sometimes beyond it. It answers 
to f. stenopliylla of Laminaria digitata. Forma bullata is found 
