The Botany of Iceland - 01.12.1912, Side 20

6
H. JÓNSSON
bjarg are referred to NW. Icel., in tlie paper mentioned above, but
in the present work (cf. Jónsson, 33, p. 11) to North Iceland. These
localities are: Hrútafjörður, Prestsbakki, Kolbeinsá, Skálholtsvík,
Kollafjarðarnes, Broddanes and Grímsey in Húnaflói.
RHODOPHYCEÆ.
BANGIOIDEÆ.
Fam. Bangiaceæ.
Bangia fuscopurpurea (Dillw.) Lyngb., K. Bosenv., 61, p. 831.
E. Icel., N. Icel., SW. Icel., S. Icel.
Porphyra umbilicalis (L.) J. Ag., K. Bosenv., 61, p. 830; P. laciniata
Strömf., 70, p. 34.
Common in all parts of the coast of Iceland.
Porphyra miniata (Ag.) Ag., K. Rosenv., 61, p. 826; Diploderma m.,
D. tenuissimum, D. amplissimum Strömf., 70, p. 33.
Found in all parts of the coast.
Porphyropsis coccinea (J. Ag.) K. Rosenv., 65, p. 69; Porphyra
coccinea Jónsson, 31.
SW. Icel.: Reykjavík, S. Icel.
Conchocelis rosea Batters.
Found in all parts of the coast.
FLORIDEÆ.
Fam. Helminthocladiaceæ.
Chantransia virgatula (Harv.) Thur., K. Rosenv., 61, p. 824.
NW. Icel., SW. Icel.
Chantransia secundata (Lyngb.) Thur., K. Rosenv., 61, p. 824.
Found in all parts of the coast.
Chantransia Alariæ H. Jónsson, 31.
SW. Icel., S. Icel.: Eyrarbakki.
Chantransia microscopica (Naeg.) Fosl. On Cladophora gracilis in
the littoral zone. Tliallus has long hairs. Published in Börgesen
and Jónsson, 14.
N. Icel.: Kolbeinsá.
The specimens mentioned under this name belong most probably
to another species of Chantransia with a unicellular base.