Lenzites betulina (L.) Fr. 1838

Guidance for ientification (German text)

Lenzites betuliniformis Murrill, sp. nov
Pileus thin, coriaceous to woody, sessile, dimidiate, imbricate, conchate, 2-3 X 3-5 X '0.3-0.5 cm.; surface velvety, tomentose, narrowly multizonate, smooth, isabelline to av.ellaneous, some of the zones slightly darker ; margin thin, fertile, rarely lobed: context white, membranous, scarcely a mm. thick ; furrows ochraceous within, frequently anastomosing both in front and behind and interrupted by pores and bifurcations, 0.5-1 mm. broad, 2-3 mm. deep, edges thin, undulate to lacerate, often porose.
Type collected at Jalapa, Mexico, on dead wood, C. L. Smith 24. Distribution : Known only from the type locality.

Lenzites betulina (ly.) Fries, Epicr. Myc. 405. 1838
Agaricus beiuUfius L. Sp. PI. 1176. 1753.
Daedalea betulina Rebent. Prodr. Fl. Neom. 371. 1804. — Fries, Obs. 1 : 104. 1815. Daedalea betulina veluiina Berk. Ann. Nat. Hist. 3 : 381. 1839. Lenzites flaccida Fries, Epicr. Myc. 406. 1838. Lenzites variegata Fries, Epicr. Myc. 406. 1838.
Lenzites Berkeleyi L6v. Ann. Sci. Nat. III. 5 : 122. 1846. (Type from New York.) Lefizites unguhforvtis Berk. & Curt. Jour. Bot. & Kew Misc. 1: 101. 1849. (Type from North Carolina.)
Pileus thin, coriaceous, sessile, dimidiate to flabelliform, imbricate, conchate, 3-4 X 4-7X0-3-1 cm.; surface conspicuously tomentose, velvety, multizonate, somewhat uneven, often radiate-rugose to plicate, avellaneous with latericeous zones, becoming olivaceous with age; margin thin, undulate to lobed at times: context very thin, white, membranous, scarcely a mm. thick; furrows slightly anastomosing when very young, 1-2 mm. broad, 3-10 mm. deep, edges thin, entire to undulate, slightly notched with age, cremeous within, ochroleucous to sordid -ochraceous without: spores globose, smooth, hyaline, 6/i; hyphae 8/i ; cystidia none.
Type LOCALITY : Sweden.
Habitat : Various forms of dead deciduous wood ; rarely on coniferous wood.
Distribution : Temperate North America ; also in Europe.

Gloeophyllum hirsutum (Schaeff.) Murrill, Jour
Myc. 9 : 94. 1903.
Agarictis hirsutus Schaeff. Fung. Bavar. />/. 76. 1762.
Agarictis saepiarius Wulfen, in Jacq. Coll. 1 : 347. 1786.
Agaricns boletiformis Sow. Engl. Fungi/)/. 418. 1814.
Daedalea saepiaria Fries, Obs. Myc. 1: 105. 1815.
Lenzites saepiaria Fries, Epicr. Myc. 407. 1838.
Lenziies.rhabarharina Berk. & Curt. Ann. Mag. Nat. Hist. II. 12 : 428. 1858. — Grevillea 1: 6b.
1872. (Type from South Carolina.) Sesia hirsuia Murrill, Jour. Myc. 9 : 88. 1903.
Pileus hard, corky to woody, slightly flexible, imbricate, sessile, laterally connate, often decurrent, oblong-dimidiate to flabelliform, conchate, 2-3 X 4-8 X 0.3-1 cm.; surface zqnate, strigose-tomentose, scrupose, anodtrm, rather uneven, reddish -fulvous to fuliginous or umbriuous; margin rather thick, sterile, isabelline, undulate, finely tomcntose, becoming acute and darker in age : context soft-corky, homogeneous, fulvous, about 2 mm. thick; tubes usually lamelloid, anastomosing when young, ochraceous to grayish-umbrinous, 0.5-1 mm. broad, 2-5 mm. deep, edges thin, undulate ; in ti poroid variety, tubes circular, regular, 2 to a mm., edges thick, firm, entire: spores ellipsoid, smooth, h3'aline, 8-12X3-4/^;
basidia hyaline, 25-30 X 5-6 /^ ; hyphae luteous, 2.5-3//.
Type LOCALITY : Bavaria.
Habitat : Dead coniferous wood.
Distribution : North Temperate zone.

Trametes betulina (formerly Lenzites betulina), sometimes known by common names gilled polypore, birch mazegill or multicolor gill polypore, is a species of inedible fungus.

Although it is a member of the Polyporales order, its fruiting bodies have gills instead of pores, which distinguishes it from the superficially similar Trametes versicolor or Trametes hirsuta. Research has shown that it has several medicinal properties, including antioxidant, antimicrobial, antitumor, and immunosuppressive activities.