171 



Fig. 90. 



Fiirccllaria fastigiata. Plants from the Baltic 

 Sea olT Gudhjem, Boniholm. Nat. size. 



not found it higher than 9 cm. lit llie inner Baltic Sea Svedelius found it 

 scarcely more than 10 cm high. He refers the plants here found to f. minor 

 Agardh, a form ditl'ering only by smaller dimen- 

 sions, in citing Fl. Dan. tab. 393 and Areschoug, 

 Alg. Scand. exs. No. 257. In the most feebly de- 

 veloped specimens the erect shoots are not bran- 

 ched, or but little so (fig. 90). — Furcellaria grows 

 usually on stones or pebbles, but may also be 

 found fixed on other Algse, as Phijllophora, Chon- 

 drus. In some places north of Fyn (especially aZ, 

 near Fyns Hovcd) it was found growing in com- 

 pany with other, mostly loose, Algse forming a dense 

 cover over the liottom, which consisted of coarse sand. 

 I am not certain whether these specimens were at 

 first loose or originally fixed at this stationary bottom. In other places detached speci- 

 mens lying loose on the bottom are met with, often in great quantities, particularly 

 in fjords, as Linifjorden, but also in the Kattegat, e. g. around Anholt. It is appa- 

 rently able to live long in this condition, for plants in which the under part is in 

 a state of disorganization are often met with. Some of these plants are not much 

 different from the normal ones; in other cases they are more branched, and form 

 globular bushes corresponding to those mentioned by Reinke (1889) and Svedelius as f. 

 cegagropila (fig. 91). 



The species 

 has been found in 

 depths from 2 to 28 

 meters and once in 

 38 m depth (near 

 Bornholm). It is of- 

 ten a predominant 

 element of the vege- 

 tation, particularly 

 in depths of 4 to 15 

 m. It is perennial, 

 but the fructifj'ing 

 shoots are shed in 

 winter. In sunny lo- 

 calities the upper 

 parts of the fronds 

 are green in sum- 



mer. 



Localities. Ns: 

 Only found at ZQ, jyd- 

 ske Rev, 24,5 m and at 



Fig. 9L 



Furcellaria fastiijiala wgagropila. From Guldborgsuiid. Nat. size- 



22* 



