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