365 
exposed localities where their close growth protects them from the 
violence of the sea. 
Tetraspore-bearing plants were found in April, May, June and 
November. 
This is a very common species of the Fseroese coasts, as was 
pointed out by Lyngbye (1. c.), who writes: — »Ad insulas Faeroenses 
copiosissime, tam lapidibus ad superficiem maris ag'glutinata, quam stipiti 
Laminariae digitatae aliarumque parasitice insidens.« 
Forma typica is most common on rocks, and subforma ccespitosa 
in exposed places on rocks between tide-marks; Simmons mentions 
having found it near Ejde (Ost.) and Famien (Syd.). Specimens which 
correspond fairly closely to f. samiensis occurred between tide-marks in 
the neighbourhood of Gliversnaes (Str.); f. pro life ra and f. typica margini- 
fera are common as epiphytes; lastly subforma nana was found in a 
small, low cave near Hojvig (Str.). 
LOMENTARIA Lyngbye. 
27. L. articulata (Huds.) Lyngb., Hydrophyt., p. 101, tab. 30 A.; 
Hauptfleisch, Die Fruchtentwickelung der Gatungen Chylocladia, 
Champia und Lomentaria (Flora 1892); Chylocladia articulata (Huds.) 
Grev., Kjellm., N. I., p. 193 (151). 
A littoral species, generally grows gregariously, and commonly 
near low-water mark in the Corallina-belt. It prefers exposed 
coasts, but may also be met with in sheltered localities, where it 
does not, however, seem to thrive. It grows attached to rocks and 
stones and has not been found as an epiphyte. Tetrasporic spe¬ 
cimens occurred in May, June, July and November. 
Lyngbye, who first found this species in the Faeroes, writes in 
Hydrophyt., p. 10, with reference to its habitat: — »Habitat pulchra 
hsec species ad rupes insularum Faeroensium in surnmo refluxus limite 
hie et illic copiose.« The species is also very common, especially along 
the more exposed coasts. 
28. L. clavellosa (Turn.) Thur. Hauptfleisch, Die Frucht- 
entvickelung der Gattungen Chylocladia, Champia und Lomentaria 
(Flora 1892); Chylocladia clavellosa (Turn.) J. Ag., Spec. Alg., Vol. 3, 
p. 297. 
Var. sedifolia (Turn.) J. Ag., Spec. Alg., vol. 2, p. 366; Gastri- 
dium purpurascens Lyngb., Hydrophyt., p. 69, tab. 17. 
Almost all the L. clavellosa -specimens from the Faeroes belong 
to the variety 1 , but they vary considerably. In some specimens 
1 I fully agree with Foslie (New or Critical Norwegian Algae, Kgl. norske 
Videnskab. Selsk. Skrifter 1894) when he says that he cannot follow Stromfelt in 
regarding var. sedifolia as a distinct species. 
