KJELLMAN, THE ALGA) OF THE ARCTIC SEA. 
Phyllaria lorea (Bory.) nob. 
Laminaria lorea Bory in J. G. Ac. Spee. Alg. 1, p. 130. 
Ph. stipite breviore vel longiore, complanato, toto e cellulis membrana tenui contexto, in laminam lan- 
ceolato-ellipticam, basi cuneatam, usque 30 em. latam vel lanceolatam, angustam cirea 5--7 cm. latam, tenue 
membranaceam, e fusco lutescentem sensim abeunte; cryptostomatibus et in planta adulta et juvenili numerosis, 
parum immersis, nullo margine elevato circumdatis; pilis numerosioribus, longe persistentibus. Tab. 24 et 25 
fiz. 5—6. ; 
Syn. Saccorhiza dermatodea J. G. Ac. Spetsb. Alg. Till., p. 31; ex parte. 
» » Kyettm. Spetsb. Thall. 2, p. 14; ex parte; Algenv. Murm. Meer. p. 36; 
ex parte. 
Description. Figure 1 in tab. 24 represents a young specimen of the commonest 
habit in its natural size. The frond is attached by a depressed conical callus radicalis 
without any trace of rhizines. The stipe is flat, yellowish-brown, pellucid, 6 mm. long, 
passing into the lamina without any definite limit. The lamina is linear-lanceolate, 8 
mm. broad at the middle, even, bearing at its top a fragment of an older lamina in 
a state of dissolution. Its lower part has the same colour as the stipe, the rest of it 
is of a lighter yellowish-brown. Cryptostomata are numerous, about 15 in a surface 
of 20 square mm. In the uppermost part such organs are wanting. Still younger in- 
dividuals than the figured one have the same conformation as this, but somewhat fewer 
cryptostomata. However, I have seen specimens that were longer, but much more 
narrow, almost linear, being 1,;5—2 mm. in breadth. These have few cryptostomata 
or none at all. 
Figure 2 shows an older individual in natural size. Here the basal disk has some 
coarse rhizines. The individual is larger, as shown by the figure, but in other respects 
resembles that delineated in fig. 1. Other individuals of the same development and 
the same size have the stipe much longer, even 25 cm. in length, but narrow; again 
others have the stipe only about twice as long as in the figured specimen, but broader, 
upwards 0,5 cm. or more in breadth. The largest specimen I have seen, that was with 
certainty to be referred to the present species, is delineated in a third of its natural 
size in fig. 3 tab. 24. Its stipe is 40 cm. long, flat almost in its whole length, mem- 
branaceous in its dried state, pellucid, upwards where it passes into the lamina almost 
2 cm. broad. The lamina (fragmentary) has been more than 80 cm. long, 30 cm. broad 
at its broadest part. It is pellucid, light brown, almost thin as paper in its dry con- 
dition, richly furnished with long-haired cryptostomata. All specimens that I have seen 
were sterile. In one, however, the sorus was in course of development. Its lamina is 
almost lanceolate, about 10 cm. broad at the middle. The stipe is 20 cm. long, up- 
wards nearly one cm. broad. 
As to the anatomical structure of the stipe, I have already described it under the 
preceding species. The long tubular cells never, even in the very largest specimens 
that I have seen, have thicker walls than the adjoining cells and on this account are 
never clearly visible in transverse section. All individuals that have attained at least 
the size shown by figure 1, have very numerous cryptostomata. These form shallow 
pits that are never surrounded with a prominent margin. The hairs are numerous and 
