Group B - poroid fungi with a daedaloid or (in part) lamellate
Fertile Surface
1. Inner substance (context) of basidiocarp white or light colored or, if darker, then less than 1 mm thick.
2. Basidiocarp occurring as large, complex cluster or rosette of large (often 10 cm or more broad),
stemmed pilei ................................ ….........................................................Bondarzewia berkeleyi
2. Basidiocarps not as above, not stemmed (sessile), simpler in structure
3. Upper surface more or less glabrous, zonate or not
4. Pore openings 1-4 mm wide, pore walls about 1 (or more) mm thick; upper surface not typically
zonate; occurring mostly on oak (Quercus) and chestnut (Castanea) ................. Daedalea quercina
4. Pore openings 0.5-1.5 mm wide; pore walls less than 1 mm thick; upper surface often concentrically
grooved (sulcate); on various hosts.
5. Upper surface grayish to typically brownish, zonate; pores whitish when young, brownish with
age; young pore surfaces bruising pinkish-brown .................................... Daedaleopsis confragosa
5. Upper surface mostly white to whitish, not zonate; pores whitish, not bruising........Trametes elegans
3. Upper surface pubescent, strongly zonate
6. Marginal pores daedaloid .........................................................................Cerrena unicolor
6. Marginal pores lamellate ............................................................................ Lenzites betulina
1. Inner substance (context) distinctly brown and more than 1 mm thick
7. Basidiocarp less than 1 cm thick
8. Upper surface hairy and zonate; inner substance rusty-brown; on conifers
only .........................................................................................................Gloeophyllum sepiarium
8. Upper surface glabrous, zonate; inner substance very light tan; pores white to brownish, sometimes
bruising pinkish-brown; on hardwoods ..........................................................Daedaleopsis confragosa
7. Basidiocarp more than 1 cm thick
9. Basidiocarp only on oak (Quercus) and chestnut (Castanea); pore openings 1-4 mm wide,
pore walls 1-3 mm thick.....................................................................................Daedalea quercina
9. Basidiocarp on a great variety of hardwoods; pores up to 1 mm in diameter, pore walls
less than 1 mm thick ..................................................................................... Daedaleopsis confragosa
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