olive-capped suillus
Suillus subolivaceus
Pileus 6.5-12 cm broad at maturity, convex when young, becoming plano-convex to plane to subumbonate at maturity; surface viscid, conspicuously appressed fibrillose, sometimes fibrillose-scaly on the margin, usually appearing glabrous and smooth on the disc; color brown ("cinnamon-brown" to "Verona brown") on the disc, fading to tan or light brown ("warm buff" to "buckthorn brown") toward the margin; margin decurved, becoming plane to uplifted, often lacerate with age. Context 1-2 cm thick, whitish to pale yellow, unchanging or becoming dingy pinkish ("avellaneous") when exposed. Taste and odor when fresh not distinctive.
Tubes 1-2 cm long, depressed, yellow ("straw yellow" to "Naples yellow" to "barium yellow"), unchanging or becoming brownish when exposed; pores 1-2 mm broad, angular, yellow ("primuline yellow" to "wax yellow"), sometimes becoming brown with age, unchanging or becoming brown when bruised.
Stipe 7-10 cm long, 1-1.5 cm thick at the apex, equal to subclavate, solid; surface dry, conspicuously glandulose, background color white to whitish, occasionally yellow at the apex; conspicuous, broad (up to 2 cm), gray to whitish annulus in apical region. Context white, unchanging when exposed.
Spore print brown. Spores 9-11 X 3-4 µm, subfusoid to subellipsoid, obscurely ventricose in side view, smooth, thin-walled.
Basidia 18-25 X 5-7 µm, clavate, hyaline, four-spored. Hymenial cystidia 40-50 X 6-9 µm, in clusters, incrusted, staining dark brown in KOH, thin-walled, subclavate to subfusoid.
Tubes 1-2 cm long, depressed, yellow ("straw yellow" to "Naples yellow" to "barium yellow"), unchanging or becoming brownish when exposed; pores 1-2 mm broad, angular, yellow ("primuline yellow" to "wax yellow"), sometimes becoming brown with age, unchanging or becoming brown when bruised.
Stipe 7-10 cm long, 1-1.5 cm thick at the apex, equal to subclavate, solid; surface dry, conspicuously glandulose, background color white to whitish, occasionally yellow at the apex; conspicuous, broad (up to 2 cm), gray to whitish annulus in apical region. Context white, unchanging when exposed.
Spore print brown. Spores 9-11 X 3-4 µm, subfusoid to subellipsoid, obscurely ventricose in side view, smooth, thin-walled.
Basidia 18-25 X 5-7 µm, clavate, hyaline, four-spored. Hymenial cystidia 40-50 X 6-9 µm, in clusters, incrusted, staining dark brown in KOH, thin-walled, subclavate to subfusoid.