Fróðskaparrit - 01.01.1992, Page 88

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THE LICHENS OF THE FAROES
851347, 851627. (2: Haematomma ven-
tosum).
Hypogymnia physodes (L.) Nyl. Mostly
on trees and lignum, 7 coll. Hvítanes,
coastal rock, SS 6344-3. (10;
1,5,24,33,34: Parmelia p.; 12: Lichen
physodes).
H. tubulosa (Schaerer) Havaas. On trees,
more common than H. physodes in
Tórshavn, and often fertile. The planta-
tion in Tórshavn, VA 85638 and 85724,
SS 6343-1; a grave-yard in Tórshavn,
VA 85653. A street tree in Tórshavn, SS
6340-1. (10; 5: Parmelia t.; 32:
Parmelia physodes var. encausta;
1,13,24: P. encausta; 33: P. encausta var.
multipuncta).
*Ionaspis arctica Lynge. Akrar, at the
coast, VA 85484; W of Gøta, VA 69780.
(2: Lecanora lacustris p.p.).
*I. odora (Schaerer) B. Stein. On rock,
Ryskivatn, VA 85485.
*Koerberiella wimmeriana (Korber) B.
Stein. Common on moist rocks, mostly
sterile, 12coll.
Lasiosphaeriopsis cephalodiorum (Rost-
rup) Alstrup comb. nov.
Basionym: Sphæria cephalodiorum
Rostrup, Bot. TidSskr. 4: 98, 1870.
Holotype: Faroe Islands, Streymoy,
Sandágerði, on Amygdalaria pelobotryon!,
Aug. 1867, Rostrup (C). Rostrup gave the
host as Squamaria gelida, and the identity
of the species has been a mystery. Only a
squash mounting with the name in
Rostrup’s handwriting was available, and it
was not possible to find a fungus fitting the
description on any specimen of Placopsis
gelida in C. However, some collections
showed that Rostrup included Amygdalaria
pelobotryon in Placopsis gelida, and the
fungus was then found on a sample with
both lichens present. The fungus is sitting
on the cephalodia of the Amygdalaria, and
it is without any doubt the holotype of
Sphaeria cephalodiorum Rostrup. The
perithecia are aggregated in a stroma, they
are verruculose due to an uneven thicken-
ing of the excipulum, the asci are cylindri-
cal, 80-90 x 11-12 pm, 4-spored. The
ascospores are uniseriate, 3-septate, each
cell with a little pore, broadly ellipsoid, not
constricted at septa, brown, 18-24 x
(8-)9.5-10.5 pm.
Four other species of Lasiosphaeriopsis
are known, three of them have much bigger
spores, but L. supersparsa (Zopf) Triebel,
known from Porpidia zeoro-ides in Italy,
may be a synonym. However, both species
are known only from the type collections,
and it is not possible to settle the question
before more collections have been studied.
Zopf’s species was published 1896, so in
case of synonymy, Rostrup’s name takes
priority.
*L. salisburyi D. Hawksw. & Sivan. A
lichenicolous fungus on Peltigera lactu-
cifolia, Hoyvík, VA 851335.
*L. stereocaulicola (Lindsay) O. Eriksson
& R. Sant. A lichenicolous fungus on
Stereocaulon vesuvianum, Kunoy, Hartz
& Ostenfeld 1897.
Lecania aipospila (Wahlenb.) Th. Fr. (2:
Lecanora aipospila, L. cyrtella p. p.).
*L. baeomma (Nyl.) R James & Laundon.
Syðrugøta, H&F 83336.