A squat slippery jack with a slimy, dark brown to reddish-brown cap that fades to tan, and a short white stem that lacks a ring and usually lacks obvious glandular dots. It is one of the most common pine boletes in North America and has been spread abroad with planted pines.
Edible and considered good by some; remove the slimy cap cuticle and, in older caps, the tubes. Separate from S. pseudobrevipes and S. glandulosipes (veils), S. granulatus (longer, dotted stem) and S. pungens (strong odor). No deadly look-alikes, though Suillus can upset some stomachs.
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Habitat
Ectomycorrhizal with two- and three-needle (hard) pines, especially lodgepole, ponderosa, jack and red pine. Single, scattered or in groups, late summer and autumn; appears early after fire in jack pine forests.
Distribution
Most of North America from Canada to Mexico, including Hawaii; introduced with planted pines to Puerto Rico, Argentina, India, New Zealand, Japan and Taiwan.
Characteristics
Cap: 5-10 cm, deep brown to reddish brown fading to tan or yellowish; sticky to slimy, cuticle peels. Pores: pale yellow, about 1-2 per mm, not bruising. Stem: 2-6 cm long, 1-2 cm thick; white to pale yellow; no partial veil or ring; glandular dots absent or inconspicuous. Spore print: cinnamon brown. Spores: 7-10 x 3-4 um, elliptical to oblong, smooth.