432 
rhizoids. Unfortunately, my specimens were still sterile. Batters 
has referred his example which bore plurilocular sporangia to 
R. verrucosa. And Kuckuck has by the help of Batters’s original 
example proved that his Heligoland plant is identical with the 
English. Kuckuck ends thus: — »Es wird mir vielleicht gelingen, 
spater einmal durch Beobachtungen im Freien und an Kulturen 
die hier behandelte Frage endgiiltig zu entscheiden. Vorlaufig kann 
ich nur meinen Zweifel daruber ausspreclien, ob unsere Ralfsia zu 
verrucosa gehort, und mochte eher vermuten, dass R. deusta vorliegt. 
Wenigstens zeigt die Pflanze, nach welclier Batters seine oben 
zitirte Figur anfertigte, vollkommen entwickelte Bilateralitat«. But 
Ralfsia verrucosa also may occasionally show signs of being bilateral 
and I am therefore of opinion — Dr. Kuckuck, with whom I 
discussed the point, said very much the same thing — that the 
specimens in question are nothing more than a form of Ralfsia 
verrucosa , which possibly, by growing in the sublittoral zone, has 
acquired a somewhat different appearance; or what is perhaps most 
probable, as Batters says, — plants bearing plurilocular sporangia 
differ from those with unilocular fruit. 
112. (?) R. clavata (Garm.) Farl., Mar. Alg., p. 88; Rosenv., Gronl. 
Havalg., p. 899. 
Amongst some different algse scraped from rocks at a height of 
some 8—9 feet above high-water mark near Famien (Syd.) there oc¬ 
curred an insignificant quantity of a small Ralfsia which probably be¬ 
longs to this species, but the sporangia being unripe the determination 
is open to doubt. It may, however, be presumed that this species, 
which has been met with in the surrounding countries both to the 
north and south of the Faeroes, also occurs there. 
Order SPHACELARIACEAE. 
SPHACELARIA Lyngb. 1 
113. S. britannica Sauvag., Remarques sur les Sphacelariacees 
(Journal de Botanique 1901, p. 50). 
Found near high-water mark or somewhat above it on damp 
rocks especially in caves and rock-clefts, where it occurs as a short, 
dark-brown mat often in association with other algae, e. g. Calli- 
thamnion, Ectocarpus littoralis, Rhodochorton Rothii, etc. 
Grows on fairly exposed coasts. 
1 Professor Sauvageau has kindly determined my material of Sphacelaria. 
