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134 Polyporeæ, Polyporus.<br />

333. Polyporus spumeus (Sow.) Fr. Syst. Myc. I, p. 358, Epicr. p. 84,<br />

Hym. Eur. p. 552, Weinm. Ross. p. 314, Berk. Outl. p. 244, Quél.<br />

p. 260, Boletus Sowerb. t. 211 (minus bona), Secret. n. 33. B.<br />

suberosus Wahlenb. Ups. n. 1054, B. pulvinatus Wahlenb. Suec.<br />

n. 2001. - Albidus; pileo carnoso-spongioso, compacto, pulvinato,<br />

gibbo, rugoso-hispido; basi stipitiformi; margine incurvato; poris<br />

secedentibus, minutis, rotundis, acutis, integris.<br />

Hab. ad arbores vetustas adhuc vivas ex. gr. Ulmi in Europa<br />

et in montibus Adirondack, New York Amer. bor. (PECK). - Valde<br />

nobilis species, circ. 8 cm. lata; caro marginem versus zonata.<br />

334. Polyporus borealis (Wahlenb.) Fr. Syst. Myc. I, p. 366, El.<br />

p. 85 cum varr., Hym. Eur. p. 552, Kalchbr. Ic. Hung. t. 35, f. 2,<br />

Weinm. p. 54, Rostk. 4, t. 40, Boletus Wahlnb. Suec. n. 2000,<br />

B. albus Schaeff. t. 314 (male), Secr. n. 59. - Ex alba tutescens;<br />

pileo e spongioso suberoso, compacto, subpulvinato, hirto, intus parallelo-fibroso;<br />

margine patente; poris adnatis, inæqualibus, sinuoso-flexuosis<br />

lacerisque, albis; sporis 4-5 3.<br />

Hab. ad truncos prostratos Abietis in Europa bareali et in<br />

truncis putridis Pini silvestris prope Minussinsk Sibiriæ Asiaticæ,<br />

in Car. inf. Amer. bor. (CRTIS), in Pensilvania (MICHENER). - A<br />

proximis egregie distinctus, junior quidem carnosus, sed adultus<br />

suberosus. Ceterum admodum variabilis. Seorsim notandi: B. montanus<br />

pileo carnoso, crasso, hirto, margine obtuso; poris obtusis,<br />

integris. C. spathulatus pileo tenui, villoso; margine acuto, in stipitem<br />

brevem latoralem porrecto; poris tenuibus, valde laceris.<br />

Dœdalea gibbosa WahInb. Ups. n. 1044. P. pithyus Chaill.<br />

335. Polyporus melinus (Karst:) Sacc. Bjerkandera melina Karst.<br />

Symb. Myc. Fenn. XVIII, pag. 80. - Pileo e carnoso-spongioso,<br />

lento, dimidiato, triquetro, azono, tomentoso-scruposo, subinde levigato;<br />

margine patente acuto, albido, mox fuliginoso-pallido, demum<br />

(siccitate) melleo vel pallescente, intus obsoletissime zonato,<br />

usque ad 6 cm. longo et 2 cm. lato, basi usque ad 4 cm. crasso;<br />

poris rotundis vel sinuoso-flexuosis, planis, tenuibus, integris, minutis,<br />

albidis, 5-7 mm. altis; sporis elongatis, rectis vel curvulis,<br />

4-5 0,5.<br />

Hab. in truncis Betulæ odoratæ prope Mustiala Fenniæ. -<br />

Contextus fibrosus, Odor debilis Liquiritiæ. Vulgo imbricatus,<br />

transversim dilatatus, subtus planus. Inter P. borealem et pubescentem<br />

medius.<br />

336. Polyporus obtusus Berk. Exot. Fung. p. 390. - Pileo tenui.<br />

5186<br />

5187<br />

5188<br />

5189

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