The Botany of Iceland - 01.12.1932, Síða 21

FUNGI OF ICELAND
469
53. P. hispidula (Niessl) Saccardo, Syll. fung. II, p. 287.
Pleospora hispidula Niessl, Notizen úber Pyrenom., p. 32.
In the plantation at Grund [P. L.]. — On withered stems and leaf-
sheaths of Luzula multiflora.
54. P. Androsaces (Fuckel) Saccardo, Syll. fung. II, p. 19.
Pleospora Androsaces Fuckel, Symholae, Nachtrag II, p. 19.
Occurs throughout Iceland, in the lowlands as well as in the fell-fields.
[Strömfelt and P. L.]. — On withered stems and leaves of Cerastium
alpinum, Draba alpina, Pedicularis flammea, but most fre-
quently on Silene acaulis.
55. P. comata (Niessl) Saccardo, Syll. fung. II, p. 286.
Pleospora comata Niessl, Beitráge zur Kenntniss der Pilze, 1872,
p. 30.
Bær in Hrutafjörður (St. St.); Þorvaldsdalur, Hallgilstaðafjall, Forn-
liagagil and Hofsfjall (O. D.). — On Alsine biflora, Cerastium alpi-
num, C. vulgatum and Viscaria alpina.
56. P. hispida (Niessl) Saccardo, Syll. fung. II, p, 284.
Þingvellir in Almannagjá [P. L.]. — On withered stems of Arabis
petraea and Arenaria ciliata.
57. P. chrysospora (Niessl) Saccardo, Syll. fung. II, p. 173.
Pleospora chrysospora Niessi, Hedwigia 1880, p. 173.
Grows in all parts of the country on a number of herbaceous plants:
Equisetum sp., Festuca rubra, Tofieldia borealis, Bumex
acetosa, Oxyria digyna, Cerastium arcticum, Alsine biflora,
A. hirta, A. stricta, Arenaria ciliata, Viscaria alpina, Carda-
mine bellidifolia, Draba incana, Arabis alpina, A. petraea,
Thalictrum alpinum, Saxifraga caespitosa, S. hypnoides, S.
rivularis, Sedum annuum, Potentilla maculata, Rubus saxa-
tilis, Vicia cracca, Plantago maritima, Primula stricta, Rhinan-
thus minor, Euphrasia latifolia, Bartsia alpina, Veronica
saxatilis, V. alpina, Gentiana nivalis, G. campestris, Erigeron
neglectus, Taraxacum vulgare, Hieracium islandica and other
Hieracium sp.
58. P. chrysospora (Niessl) Saccardo, var. polaris Karsten, Hedwigia
1884, p. 38.
Mountain slopes facing Lagaríljót near Hallormstaðir [P. L.].
On withered stems, leaves, and sepals of Saxifraga aizoides.
Diameter of perithecia 200 fi. Bristles straight or undulate, 80—90 X
4—5 fi. Asci cylindric-clavate with a short broad stalk, 8-spored, 120—
135 X 32—35 fi (p. sporifera). Spores yellowish brown, cylindric-ovate,
ends. obtuse, 7 transverse septa, 1—3 longitudinal septa, the end cells
having 1, the raedian cells 3. 8 measurements of tlie spores produced