The Botany of Iceland - 01.12.1941, Side 15

The Botany of Iceland - 01.12.1941, Side 15
STUDIES IN THE LARGER FUNGI OF ICELAND 199 Helvellaceae. Helvella Linné. 4. *H. lacunosa Afzel., Vet. Ac. Hd., 1783, p. 303. Laugarvatn, 5.VIII.1935. Among grass in a meadow. Spores oval, 1-guttulate, 17 X 11 M ', plate, fig. 4. Tremellaceae. Tremella Dill. 5. *T. mesenterica Retz. Slúttnes, 31.VII. 1935. On bark of Betula. Polyporaceae. Polyporus Micheli. 6. P. brumalis (Persoon) Fries. Boletus brumalis Persoon, Synops. meth. fung., p. 517. Vaglaskógur, 31.VII.1935. On fallen branches of birch. 7. *P. varius Fries, Syst. Myc. I, p. 352. Reykjahlíð, 27.VII. 1937. In a lavafield (determined by N. F. Buchwald). Cap 5—12 cm, pallid ochraceous, then tan colour, or cinnamon streaked with brown, very coriaceous, cyathiform, or plane and depressed at the disc or beyond, smooth. Stipe 1.5—5 cm X 4—12 mm, pale ochraceous at the apex, black lower down, central, excentric, or lateral, smooth, tough, firm. Tubes whitish, then ochraceous or cinnamon, decurrent, 1—3 mm long; orifice of pores white, becoming yellowish, small, round. Flesh white, then yellowish, very tough, woody, thin. Smell slight. Taste bitter. On stumps. Spores white, oblong or elliptical, 7 X 2.5—3 M ', plate, fig. 5. Hygrophoraceae. Hygrophorus Fries. 8. H. conicus (Scopoli) Fries, Hym. Eur., p. 419. Poul Larsen, Fungi of Ice- land, p. 522, no. 478. J. E. Lange, Fl. Agar. Dan., vol. V, t. 167, f. D. Laugarvatn, 5.VIII.1935. Vestmannaeyjar, 9.VIII.1935. Among grass in out- fields and under birches. 9. *H. constans J. E. Lange (?), Studies in the Agarics of Denmark V, p. 24 (H. obrussea Ricken). Fl. Agar. Dan., vol. V, t. 167, f. C. Laugarvatn, 5.VIII.1935. In birch copses. Vestmannaeyjar, 9.VIII.1935. Among grass in outfields. Cap 3—4 cm broad, broadly conical, yellow, pellucid-striate. (It is generally more broadly conical than H. conica, but chiefly distinguished from this species by never turning black). Flesh paler yellow. Taste mild. Stipe 4—6 cm high, 4—6 mm

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