230 KJELLMAN, THE ALG OF THE ARCTIC SEA. 
f. grandifolia nob. 
f. plant adult stipite elongato, 15—70 em. longo, digiti minoris crassitudine; lamina obscure olivacea; 
subopaca, lineari-lanceolata, basi late cuneata, 125—280 em. longa, 25—70 em. lata, media parte zoosporangifera 
circa 1 mm. crassa, dense bullata, at non rugosa, disco lineari sublevi, margine angustiore undulato; lacunis 
muciferis in stipite nullis in lamina magnis, distinctis, at pareis; soro vittam elongatam, circa 10 em. latam in 
parte media et superiore lamin formante. 
f. latissinia nob. 
f. stipite praelongo usque tripedali, digiti crassitudinem attingente; lamina plantz junioris sublineari, basi 
ovata, plante adult late elliptica, basi ovato-cordata, 75 cm. lata, coriaceo-membranacea, olivacea, subpellucida, 
parte media 1—2 mm. crassa, scrobiculata vel rugoso-bullata, margine amplo tenui undulato; lucunis muciferis 
in stipite nullis, in lamina magnis, distinctis at parcis, soro vittam elongatam in parte media et superiore la- 
mine formante. 
Syn. Fucus saccharinus Gunn. Fl. Norv. 1, p. 52. 
» » We. Fl. Lapp. p. 493; excl. syn. sec. Sommerr. Suppl. p. 183. 
Lamincria caperata Kuren, Nord]. Alg. p. 32. 
» saccharina J. G. Ac. Enum. 
» » Arescu. Phye. Scand. p. 343. 
» » KuiEEN, Nordl. Alg. p. 32. 
» var. septemtrionalis Rostar. in Gos, Algenfl. Weiss. Meer. p. 78. 
Ulva longissima Gunn. 1. c. 2, p. 128, t. 7. 
» maxima(?) » yao, 9 127 ane op 
Remark on the definition of the forms. The plant which I have referred to f. linearis 
J. G. Ac. has a longer stipe in proportion to the breadth of the lamina than is stated 
in the diagnosis of the form. In some specimens the stipe is even 45 cm. long and 
even five times longer than the greatest breadth of the lamina. Even in specimens from 
the coast of Finmarken the laminais often more lanceolate than it seems to have been in 
those individuals on which the description of J. G. AGArpH was founded. The form is 
easily recognizable by the narrow, thick, coriaceous, rugose, little or not at all wavy, 
lamina, and by the proportionately long stipe. In the lamina there are distinct, large, 
but thinly scattered lacune mucifere. Certain individuals from southern Norway that 
I have seen, agree better with J. G. AGarpu’s description. However, there are to be 
found also here individuals nearly approaching the arctic form or even identical with it. 
I have seldom met with L. saccharina f. oblonga in the Polar Sea. It is smaller 
here and generally has longer stipes than farther south. The rugee are numerous and 
distinct, encompassing rounded patches. Even this form possesses large, distinct, and 
pretty numerous lacune in the lamina. JL. saccharina f. grandifolia reminds one much 
of the arctic L. Agardhii, approaching it nearly in size and in the dimensions of the 
several parts. It differs from it by the colour being darker and the lamina less pellucid, 
less wavy, thicker especially in the middle, with distinct depressions there. Besides, it 
is distinguished from L. Ayardhii by the large distinct lacunw mucifere of the lamina. 
It is known from the other forms of L. saccharina by its considerably larger dimen- 
sions, especially the great length of the stipe, by the absence of ruge, which are re- 
placed by deep large pits, by its less solidity and lighter colour, ‘The following mea- 
surements show its proportions. 
