Fróðskaparrit - 01.01.1992, Blaðsíða 86

90
THE LICHENS OF THE FAROES
19-22 x 8.5-10.5 |om magnae, membranis
crassis, laevibus, fuscis.
Lichenicolous ascomycete. Ascomata
apothecia, dispersed, at first innate, later
sitting; disc flat, black, c. 0.6 mm diam.
Excipulum persistent, c. 50 |im thick,
brown-black in section, of almost isodia-
metric cells 5-8 pm. Hyme-nium 100-110
pm high, hyaline. Paraphyses c. 2 pm thick,
sparsely branched, septate; endcells brown,
with dark cap, 6 pm thick. Asci elonga-
te-clavate, 70-80 x 12-16 pm, 8-spored.
Ascospores (2-)3-septate, ellipsoid, with
round-ed ends, slightly constricted at the
median septum, thick-walled, smooth,
brown, 19-22 x 8.5-10.5 |im.
Holotype: Faroe Islands, Streymoy,
Tórshavn, on Pertusaria dactylina, July
1867, Rostrup (C).
Rostrup studied the specimen and wrote
Leciographa parasitica on the envelope,
but stroke that name again, and the speci-
men is not included in his publication (1).
Dactylospora (Leciographa) parasitica is
also found on Pertusaria, but the hymeni-
um is 50-65 |im high and the ascospores
3-5-septate, 12-19 x 5-8 pm. Another
species known from Pertusaria is D.
pertusariicola, which has multispored asci
and ascospores 1 (-3)-septate, 7-11 x 4-6
|im. On Ochrolechia two other species of
Dactylospora occur. D. glaucomarioides
has 3-5-septate ascospores, 12-19 x 5-8 |im,
and hymenium 55-65 |im high. D. parellar-
ia also has a low hymenium and ascospores
9-16 x 3-7 |im. The pre-sent species has the
broadest ascospores known in the genus. It
is only known from the holotype.
Sclerococcum sphaerale is found in the
same collection
Dermatocarpon intestiniforme (Kórber)
Hasse. Gjógv, SS 6322-2. (5; 1,2: Der-
matocarpon rufescens p.p., Porkeri and
Sandoy).
D. luridum (With.) Laundon (1,2: D. fluvi-
atile; 33: Endocarpon f.).
D. miniatum (L.) Mann. Common on
basalt rocks, 8 coll. (incl. var. complica-
tum). (1,2,5,6: all both varieties;
24,32,33: Endocarpon minatum).
Endococcus propinquus (Korber) D.
Hawksw. Lichenicolous fungus. S-fac-
ing rock at Leynavatn, on indet. crustose
lichen, VA 851366; Slættaratindur, on
Porpidia, VA 851277; Hestur, on P.
soredizodes, VA 85428; Gøta, on Porpi-
dia sp., VA 69780; Kunoy 1897, on P.
cinereoatra, Hartz & Ostenfeld. (1,2: E.
gemmifer).
*E. rugulosus Nyl. Lichenicolous fungus.
On Aspicilia lacustris, Hoyvík, VA
851516. Indet. host, Víkarbyrgi, VA
851465.
*E. stigma (Korber) Stizenb. Licheni-
colous fungus. On Acarospora smarag-
dula, Gjov, GD.
Endococcus verrucosporus Alstrup sp.
nov.
Pyrenomyces lichenicola. Perithecia
immersa vel semi-immersa, dispersa, ni-
gra, 100-150 pm diam. Excipulum circiter
15 pm crassum, pseudoparenchymati-cum,
e circiter tribus stratis cellularum fuscarum
formatum, circum ostiolum crassius.