Fróðskaparrit - 01.01.2001, Page 21

The Bangiophyte Species
of the Faroe Islands
Reyðtarar av bólkinum Bangiophycidae í føroyskum øki.
25
Juliet Brodie1, Ruth Nielsen2 and Karl Gunnarsson3
1: Bath Spa University College, Newton Park, Newton St. Loe, Bath BA2 9BN, UK.
Phone: + 44 (0)1225875435, Fax: + 44(0)1225875776, E-mail: j.brodie@bathspa.ac.uk
2: Botanical Museum & Library, Gothersgade 130, DK-1123 Copenhagen K, Denmark.
Phone: + 45 35322185, Fax: +45 35322186, E-mail: ruthn@bot.ku.dk
3: Marine Research Institute, Skúlagota 4, 101 Reykjavik, Iceland.
Phone: + 354 5520240, Fax: +354 5623790, E-mail: karl@hafro.is
Úrtak
Víðfevnandi innsavningar av algum í Føroyum hava
avdúkað hesi sløg av reyðalgum, sum hoyra til flokkin
Bangiophycidae: Bangia atropurpurea, Erythrocladia
irregularis, Erythrotrichia bertholdii, E. carnea, Por-
phyropsis coccinea, Sahlingia subintegra, Porphyra
amplissima, P. dioica, P. leucosticta, P. linearis, P.
miniata, P. purpurea, P. umbilicalis og minst trý sløg,
sum helst ikki enn hava fingið navn. Skilnaður millum
slektimar Porphyra og Bangia sæst best á blaðskapi, liti
á turkaðum herbariueintøkum og bygnaði av nørings-
gøgnum. Hini sløgini kunnu bert navngreinast við kann-
ing í sjóneyku. Urslitini av hesari kanning verða saman-
borin við úrslitini frá øðrum nýligum kanningum av hes-
um Porphyra algum í Bretsku Oyggjunum, har tey somu
sløgini finnast uttan P. miniata.
Abstract
A study of the bangiophyte species (i.e. those belonging
to the subclass of red algae the Bangiophycidae), based
on extensive collections from the Faroe Islands, has re-
vealeđ the following species: Bangia atropurpurea,
Erythrocladia irregularis, Erythrotrichia bertholdii, E.
carnea, Porphyropsis coccinea, Sahlingia subintegra,
Porphyra amplissima, P. dioica, P. leucosticta, P. lin-
earis, P. miniata, P. purpurea, P. umbilicalis and at
least three possibly undescribed species. Porphyra and
Bangia species can be distinguished on the basis of
shape of frond, colour of dried herbarium specimens and
the nature of the reproductive structures. The other
species require microscopic examination to be identi-
fied. The Porphyra data are discussed in relation to the
recently studied British Isles bangiophyte flora which is
similar but lacks P. miniata.
Introduction
Between 1994 and 1997 extensive collec-
tions were made of the marine algae and
fauna in shallow water around the Faroe Is-
lands as part of the BIOFAR project, the
aim of which was to produce an inventory
of all the plant and animal species present.
This paper deals specifically with species
of red algae collected that are currently as-
signed to the subclass Bangiophycidae
(bangiophytes). These are dealt with se-
parately from other red algae, the Florideo-
phycidae. Two genera of bangiophytes,
Bangia and Porphyra, have species that are
notoriously difficult to identify because of
the lack of obvious morphological charac-
ters.
The basic life history was originally elu-
cidated by Drew (1949; 1954), who showed
it to be heteromorphic, and consisting of
Fróðskaparrit 49. bók 2001: 25-36