Oak Bolete Scientific name:Butyriboletus appendiculatus (Schaeff.) D. Arora & J.L. Frank 2014 Synonyms:Species Fungorum 10.07.2015: Boletus appendiculatus Schaeff. 1763 Boletus appendiculatus subsp. appendiculatus Schaeff. 1763 Boletus appendiculatus subsp. euappendiculatus Maire 1933 Boletus appendiculatus subsp. regius Konrad Boletus radicans var. appendiculatus (Schaeff.) Pers. 1801 Dictyopus appendiculatus (Schaeff.) Quél. 1886 Dictyopus appendiculatus var. appendiculatus (Schaeff.) Quél. 1886 Tubiporus appendiculatus (Fr.) Maire 1937 Habit of Growth:
Mushroom is not protected Trees: Fagus (Beech)d0d0d0d0d0
, Quercus (Oak)d1d1
Cap: 5-20 cm across, hemispherical when young, later convex and pulvinate, surface finely tomentose, also somewhat aerolate in age, light brown to chestnut brown, margin acute, incurved and projecting somewhat beyond the tubes.
Hymenophore: mouths light to intense lemon yellow, olive yellow to brownish in age, bluing when bruised, immediately bluing, notched at the stem.
Spore print: olive brown
Spore: fusiform, 9-13 x 3,6-5,2 μm
Stem: 6-15 x 2,5-5 cm, cylindric, base somewhat tapered and fusiform rooting, surface lemon to gold yellow, increasingly ocher brown toward the base, almost the entire stem covered with a fine yellow to brownish net, flesh yellow, reddish brown toward the base, bluing slightly when cut.
Flesh: whitish or light yellow, more intense above the tubes, odor and taste pleasant.
Habitat: in hardwood forests, on calcareous soils, at beech and oak, grows from summer to fall.
Remarks: cup surface turning faintly reddish-brown with KOH