Fróðskaparrit - 01.01.1992, Blaðsíða 104

108
THE LICHENS OF THE FAROES
On soil. Toftavatn, VA 85849; SS 62-
98-3. W of Skopun, VA 851694;
Tórshavn, VA 85632; Selatrað, VA
85803. (10).
*T. wallrothii (Florke) Hertel & G.
Schneider. N-end of Borðoyarvík, GD.
Tremolecia atrata (Ach.) Hertel. Very
common on rocks, 12 coll. (7; 2: Lecidea
atroferrata + var. dicksonii).
Tuckermannopsis chlorophylla (Willd.)
Hale. Epiphytic and on rocks. Kirkju-
bøur, SS 6344-2. (5,10; Cetraria c.\ 2:
Cetraria saepincola var. c.).
Umbilicaria cylindrica (L.) Delise ex
Duby. Very common on rocks, 9 coll. (5,
6,24; 1,2,33: Gyrophora c.; 32: U. pro-
boscidea var. c.).
U. proboscidea (L.) Schrader. (24,32; 2:
Gyrophora p.; Gyrophora hyperborea;
12: Lichen proboscideus).
Usnea subfloridana Stirton. On Picea and
Larix in Tórshavn, VA 85640, 85646;
Pinus, Selatrað, VA 85795. Kirkjubøur,
SS 6344-5. (10).
Verrucaria aethiobola Wahlenb. Vest-
manna Gjógv, dolerite rock, GD. (24; 1:
V. margacea var. aethiobola).
V. ceuthocarpa Wahlenb. in Ach.
Tórshavn, SS 6342-6. (5).
V. ditmarsica Erichsen. Gjógv, rocky
shore, GD. Kirkjubøur, GD. (5)
*V. gudbrandsdalensis Zsch. ex H. Magn.
On rock, í Botni, VA 85703.
V. halizoa Leighton. Rocky sea-shores.
Tórshavn, M. Skytte Christiansen 1946.
Kirkjubøur, GD. (4,5: V. microsporá).
V. margacea (Wahlenb.) Wahlenb. 1 km W
of Kvívík, SS 6258-2. (2).
V. maura Wahlenb. Very common along
the coasts, 24 coll. (1,3,5,22,24,33; 2:
incl. var. aractina and v&r.fuscescens).
V. mucosa Wahlenb. Seashore rocks.
Saksun; Varmakelda, VA 85786.
Tórshavn, Skarvatangi, GD. Dalá, H&F
83257. (2,3,4,5,22).
V. muralis Ach. On mortar, W of Skopun,
VA 85681; Velbastaður, VA 851587;
Skarvanes, VA 851701. (2: V. rupestris f.
muralis).
V. nigrescens Pers. On rock, Elduvík, VA
851637. (2).
*V. papillosa Ach. On rock. Slættaratindur,
VA 851260; Hoyvík, VA 851542;
Leynavatn, VA 851573 and 85328.
Vestmanna, DG.
*V. praetermissa (Trev.) Anzi. On moist
rock, Koltur, VA 851322.
*V. prominula Nyl. In Verrucaria maura
zone, Kirkjubøur and Tórshavn, GD.
V. rupestris Schrader (2).
V. striatula Wahlenb. (2).
* V. tectorum (Massal.) Korber. Leirvík, on
mortar, VA 69806a, det. R. San-tesson.
*V. cfr. tristis (Massal.) Krempelh.
Strømø, Rostrup 1867. Apparently
Rostrup did not include this collection in
his paper.
The thallus is very thin, the perithecia
sitting, the ascospores subglobose, 12-15
x 10-11 pm.
*V. umbrinula Nyl. Kirkjubøur and Gjógv,
on rock and whale-bone, GD.
Verrucaria sp. Toftavatn, GD. the thallus
is very thick, areolate, ochraceous
(rusty). Perithecia semi-immersed.
Involucrellum distinct, reaching base of
perithecia. Excipulum thin, pale.
Ascospores 26-29 x 11-12 um.