KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 20. N:0 5. 107 



The Murman Sea: commonly spread, as on the Murman coast, Cisuralian Sa- 

 moyede-land, the west coast of Nowaya Zemlya rather abundant, Kolgujew Isle, the 

 main land at Jugor Shar. 



The White Sea: common and abundant according to Gobi. 



The Kara Sea: scanty in Uddebay on the east coast of northern Novaya Zemlya. 



The Siberian Sea: scarce at Irkaypi. 



2'he American Arctic Sea: Western Eskimaux-land; Hudson Strait. 



Baffin Bay: Cumberland Sound, rather rare. 



Gen. Rhodomela (Ac.) J. G. Ag. 



Sp. Alg. 2, p. 874; Ag. Spec. Alg. 1, p. .368; ex parte. 



Rhodomela lycopodioides (L.) Ag. 



1. c. p. 377; Fucus lycopodioides L. Syst. Nat. 2, p. 717. 



f. typica 



ce. cornpacta nob. 

 Descr. Uhodomela lycopodioides J. G. Ag. Spec. Alg. 2, p. 88.5. 

 Fig. » » Harv. Phyc. Brit. t. 50. 



Exsicc. » » Akbsch. Alg. Scand. exsicc. N:o 3. 



/i. laxa nob. 



f. fronde quatn in priore laxius ramosa, axi principali et inferne at superne ramos longiores emittente, 

 ramulis laxius dispositis. Tab. 9, fig. 1. 



/. tenera nob. 



f. fronde 15 — 30 cm. alta, tenera et flaccida, axi primario 5 — 6 cm. longo, residuis ramorum dejectorum 

 et ramis brevibus, rigidis, cylindricis, basi plus minus attenuatis, adpressis, deusissime vestito, ramosque emit- 

 tente nonnuUos longiores, flaccidos, systemata ramorum breviora, oblongo-lanceolata, laxe disposita et raraulos 

 simplices pauciores apice et basi attenuates gerentes. Tab. 9, fig. 2. 



Description. The form / tenera becomes nearly a foot long, and is flaccid and 

 slender. The frond has a short, generally 5 — 6 cm. long, main axis which is 

 densely beset with short, 4 — 5 mm. long, rigid, appressed secondary axes, some of 

 which are plainly remains of branches, while others are side-axes that have stopped 

 in their growth (leaves). The latter have generally a cylindrical or almost spindle- 

 shaped form, tapering commonly somewhat towards the base. From the remains of 

 the branches new side-axes may be developed. Besides, there issue from the short 

 main axis, which has ceased to grow longer, one or more, but commonly only a little 

 number, of long, flaccid, slender, repeatedly racemose branch-systemes, which are linear- 

 lanceolate in circumference, and have a distinct main axis, beset with short, scarcely 2 

 cm. long, thin branchsystems of the second order, oblong-lanceolate in periphery, and 

 few, scattered, simple branches, often incurved in the shape of a sickle and attenuated 

 towards the base and the tip. In other specimens the main stem puts forth some 

 few branches dissolved at the top and resembling the main stem. In this case it is 

 these that give rise to the long, flaccid branch-systems. 



