226 KJELLMAN, THE ALGiE OF THE ARCTIC SEA. 



Phyllaria lorea (Bort.) nob. 



Laminaria lorea Boky in J. G. Ag. Spec. Alg. 1, p. 130. 



Ph. stipite breviore vel longiore, complanato, toto e cellulis membrana tenui contexto, in laminam lan- 

 ceolalo-elliptieam, basi cuneatam, usque 30 cm. latam vel lanceolatam, angustam circa 6 — 7 cm. latam, tenue 

 membranaceam, e fusco lutescentem sensim abeunte; cryptostomatibus et in planta adulta at juvenili nuraerosis, 

 parum immersis, nullo margine elevato circumdatis; pilis numerosioribus, longe persistentibus. Tab. 24 et 25 

 fig. 5—6. 



Syn. Saccorhiza dermatodea J. G. A&. Spetsb. Alg. Till., p. 31; ex parte. 



» » Kjellm. 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 



