Fróðskaparrit - 01.01.1996, Page 75

Species ofthe algal genus Vaucheria
on the Faroes
79
Tyge Christensen
Botanical Institute, University of Copenhagen, Department of Mycology and Phycology
Øster Farimagsgade 2 D, DK-1353 Copenhagen K., Denmark
Tyge Christensen died in January 1996.
The abstract was prepared and the manuscript submitted for publication by Ruth Nielsen, Botanical Museum and
Library, University of Copenhagen, Gothersgade 130, DK-1123 Copenhagen K, Denmark
Úrtak
Sløg av taraættini Vaucheria (Tribophyceae) ímynda
tunt tægrateppi ofta við røtumar á blómuplantum. Tey
em at finna eitt nú við áarbakkar á smáløkum, í veitum
við vegjaðarar og ( síðlendi. Vertir úr sovorðnum støð-
um vórðu savnaðir í Eysturoynni, á Streymoynni, í Suð-
uroy og á Viðoynni fyrru helvt av juli 1994.
Higartil em bert fá Vaucheria-sløg fráboðað úr Før-
oyum. Nýggjar fráboðanir hiðani av oyggjunum í hesi
kanning eru: V. aversa, V. canalicularis, V.frigida, V.
medusa, V. prona og eitt slag, sum verður roknað upp í
V. geminata-heMina, er líkt V. trigemina.
1 greinini eru eisini viðmerkingar um V. coronata og
um V. dillwynii og V. hamata, sum áður hava verið frá-
boðað sum ávikvist V. pachyderma var. islandica og V.
uncinata.
Harafturat er komið fram á tríggjar Vaucheria-snult-
arar: ‘rotatorin’ Proales werneckii, ‘plasmodioforalin’
Woronina glomerata og ‘sytridin’ Zygorhizidium vau-
cheriae.
Abstract
Species of the algal genus Vaucheria (Tribophyceae)
form mats of thin filaments on the ground often at the
base of flowering plants. They can be found at places
like sides of brooklets, on roadside ditches, and in salt
marshes. Samples from such places were collected on
Eysturoy, Streymoy, Suðuroy and Viðoy in the first half
of July 1994.
Only a few Vaucheria species have hitherto been re-
ported from the Faroe Islands. New records for the
archipelago reported in this study are: V. aversa, V.
canalicularis, V. frigida, V. medusa, V. prona, and a
species referred to the V. geminata complex being V.
trigemina-like.
The paper also includes comments to V. coronata
and to V. dillwynii and V. hamata earlier reported as V.
pachyderma var. islandica and V. uncinata respectively.
In addition three Vaucheria parasites have been en-
countered: the rotatorian Proales werneckii, the plas-
modiophoralean Woronina glomerata, and the chytrid
Zygorhizidium vaucheriae.
Introduction
The algae of the Faroe Islands were very
well accounted for by Børgesen, both those
found in fresh water (Børgesen, 1901) and
those of the sea (Børgesen, 1902; 1904).
Still his mode of working did not permit
full coverage of all groups. The genus
Vaucheria was one of those poorly covered.
Its species are too small to be recognized by
the naked eye and too large to form part of
the mixed samples and, in addition, repre-
sentatives of this genus are often sterile
when found and then must be grown in cul-
ture before identification. For these reasons
only three species of Vaucheria were re-
corded by Børgesen, one listed as V. coro-
nata Nordst., one as an alga close to V.
Fróðskaparrit 44. bók 1996: 79-84