The Botany of Iceland - 01.12.1949, Page 21

THE FLORA OF REYKJANES PENINSULA
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Grindaskarð (Thoroddsen), Skúlatúnshraun (Thoroddsen), Yogsósar (Thorodd-
sen), Herdísarvík (Thoroddsen), Jámgerðarstaðir (Bjami Sæmundsson), Búrfell
(i20 m).
17. Cystopteris fragilis (L.) Bernh. in Schrad. (1806) 26. (typ.)
4—320 m.
In the lowland common. In lava fissures and caves, in shady and damp places.
Hafnarfjörður (Solander), Snorrastaðatjörn, 7 m; Arnarfell, 173 m; Fíflavalla-
fjall, 230 m; Súlur, 140 m; Valahnúkur, 145 m; Hagafell, 120 m; Þorbjörn,
40 m; Búrfell, 120 m; Syðri Stapi, 150 m; Grímsholl, 58 m; Brekka, 42 m;
Grindavík, 4 m; Merkines, Stakkavík, 5 m; etc.
18. Dryopteris austriaca (Jacq.) Woynar ex Sch. et Thell. (1915) 339.
In lava fissures, rare.
Hafnarfjörður (Davíðsson); Kapelluhraun, Herdísarvlk (Thoroddscn).
19. Dryopteris Filix-mas (L.) Schott (1834) 9.
Scattered, in lava fissures.
Herdísarvíkurhraun (St. Stefánsson); Hafnarfjörður (Davíðsson); Kapelluhraun,
10 m; Járngerðarstaðir (Bj. Sæmundsson); Cape Reykjanes (Ostenfeld); Grinda-
vík (Ingólfur Davíðsson).
20. Dryopteris Linnaeana (L.) C. Chr. (1905) 275.
10—280 m.
Not common; in lava fissures or in Empetreto-Vaccinietum.
Lava field near Þordarfell (Ostcnfeld); Járngerðarstaðir (Bjarni Sæmundsson),
Herdísarvík, 10 m; Snókafell, 125 m; Almenningur, 105 m; Ketill, 240 m;
southern hillside of the Central Highland, 50 m; between Helgafell and Búrfell,
120 m; Breiðdalur, 240 m; Western Plateau near the cote 310 m (280 m)!
Núphlíð (Ingólfur Davíðsson).
21. Dryopteris Phegopteris (L.) C. Chr. (1905) 284.
30—190—(450 m).
Scattered, in lava fissures.
Skúlatúnshraun and Helgafell (Thoroddsen), Hafnarfjörður (Grönlund); Ka-
pelluhraun (S. O. F. Omang), Gullkistugjá, 20 m; Straumsvík, 30 m; Engidals-
kvísl, 196 m; Brennisteinsfjöll, 450 m, in a lava fissure warmed by tepid
dampness.
22. Polypodium vulgare L. Sp. pl. (1753) 1085.
—120 m.
In cliffs, rare.
Hafnarfjörður (Solander), Þurráskarð (Thoroddsen); Járngerðarstaðir (Ingólfur
Davíðsson); Herdísarvíkurfjall, 120 m.
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