Fróðskaparrit - 01.01.1992, Page 80

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THE LICHENS OF THE FAROES
Placodium cerinum; 33: Caloplaca ceri-
na).
*C. ferruginea (Huds.) Th. Fr. Hvalvík,
Acer in plantation, VA 85629.
C. flavorubescens (Huds.) Laundon. (10).
C. flavovirescens (Wulf.) DT. & Samth.
Ryskivatn, on a concrete dam, VA
85704. Gjógv, SS 6323-5. (1,2:
Placodium aurantiacum b. flavovir-
escens).
C. holocarpa (Hoffm.) Wade. Common on
mortar and basalt, 21 coll. (2: Placodium
aurantiacum, incl. var. obliterata; 1,2: P.
jungermanniæ; 33: Caloplaca junger-
manniae).
C. marina (Wedd.) Zahlbr. Common on
coastal rocks, 13 coll. (4,5,19,22; 1:
Placodium murorum p.p.; 2: Placodium
murorum var. obliterans).
C. nivalis (Kórber) Th.Fr. Slættaratindur,
SW-slope, 400 m, on moss, SS 62-79-1.
(7).
*C. scopularis (Nyl.) Lettau. Seashore
rock, Koltur, VA 851317.
*C. soropelta (E.S. Hansen, Poelt &
Søchting) Søchting. Tórshavn, GD.
C. thallincola (Wedd.) Du Rietz. Common
on coastal rocks, 10 coll. (5,19).
*C. verruculifera (Vainio) Zahlbr.
Common on coastal rocks, 8 coll.
Candelariella aurella (Hoffm.) Zahlbr.
Frequent on calcareous materials, 5 coll.
(2: Placodium vitellinum var. octospo-
rum).
*C. coralliza (Nyl.) H. Magn. On
bird-stones. Leirvík, VA 69799.
Toftavatn, SS 6297-2, 6327-2.
C. vitellina (Hoffm.) Miill. Arg. Common
on rocks, 18 coll. (5,7; 1: Placodium
vitellinum; 24: Lecanora vitellina; 33:
Caloplaca v.).
C. xanthostigma (Ach.) Lettau. On Acer in
Tórshavn, VA 85734. (10).
Carbonea degelii Alstrup sp. nov.
Discomyces lichenicola. Apo'thecia disper-
sa vel congregata, initio plana, in thallum
hospitis immersa, post emergentia, con-
vexa, sessilia, nigra, nitida, ad 0.7 mm
diam. Margo initio manifestus, niger,
provecta aetate revolute tectus, inter epihy-
menium viridulum et hypothecium fuscum
colore intermedius. Hymenium 65-75 pm
altum, summa parte 10-15 pm alta dilute
viridula, reliqua parte achroa. Hypothe-
cium in apotheciis convexis 100 pm altum
vel ultra, fuscum, KOH tractatum liquorem
rubellum reddens. Paraphyses inter se lib-
erae, sparse ramificatae nullis anastomosi-
bus visis, circiter 1 jom crassae, apicibus ad
2 pm incrassatae, calyptris obscuris nullis.
Asci clavati vel late clavati, ascis
Lecanorae similis, 35-45 x 13-16 pm
magni, octospori. Ascosporae non septatae,
paene cylindricae, apicibus rotundatis,
hyalinae, 11-13 x 3.5-4 pm magnae.
Lichenicolous discomycete. Apothecia
dispersed or aggregated, at first immersed
in the host thallus and flat, later sitting and
convex, black, shining, up to 0.7 mm diam.
Margin at first distinct, black, in old stage
excluded, in colour transitionary between
the greenish epihymenium and darkbrown
hypothecium. Hymenium 65-75 (0m high,
upper 10-15 pm dilute greenish, otherwise
hyaline. Hypothecium at least to 100 |im