Suillus fuscotomentosus Thiers & A.H. Sm.
No common name
Suillaceae
Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.
Introduction to the Macrofungi
No common name
Suillaceae
Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.
Introduction to the Macrofungi
Photograph
Species Information
Summary:
Features include 1) a cap with olive-brown to dark brown fibrils or fibrillose scales, 2) whitish to yellowish flesh that does not turn blue, 3) yellowish pores that do not change color, 4) whitish to yellowish stem with conspicuous dots that are colored like the stem then brown, and 5) growth under pine.
Chemical Reactions:
cap cuticle black with application of KOH, negative with FeSO4; flesh gives a pink flash then grayish pink with application of KOH, greenish gray with FeSO4, (Bessette)
Odor:
not distinctive (Smith)
Taste:
not distinctive to weakly acid and unpleasant, (Smith)
Microscopic:
spores 9-12 x 3-4 microns, spindle-shaped to elliptic, smooth, (Arora), spores 9-12 x 3-4 microns, fusoid to subelliptic to subcylindric, smooth, pale ochraceous in Melzer''s reagent, pale yellow in KOH, thin-walled; basidia apparently 2-spored to 4-spored, 21-24 x 6-8 microns, clavate, colorless; cystidia in clusters or fascicles, rare to absent on sides of tubes, but abundant on pores, 30-45 x 8-10 microns, cylindric to subclavate to obtusely fusoid to highly irregular in shape, typically staining dark brown to black in KOH, appearing incrusted near the pores, often only basal part of cluster staining when on sides of tubes; cap cuticle "a highly uneven turf of more or less erect, septate hyphal tips, not at all or only slightly gelatinous in KOH, hyphae typically appearing incrusted, and staining pale brown", cells +/- 7 microns wide; surface of stem "not gelatinous in KOH, with numerous large clusters of caulocystidia" 60-90 x 6-10 microns individually, which stain dark vinaceous to black in KOH, cylindric to highly irregular in shape; clamp connections not seen, (Smith)
Spore Deposit:
olive-brown to dull cinnamon-brown (Arora), olive-brown (Bessette)
Notes:
Suillus fuscotomentosus is found in OR and CA (Bessette). Oregon State University has one collection from OR labeled as this species, and the University of British Columbia has one collection from BC labeled as this species.
EDIBILITY
yes, but slimy and insipid, (Arora)
Habitat and Range
SIMILAR SPECIES
Suillus tomentosus has flesh that changes to blue, the color of the cap is lighter, and the spores are smaller, (Smith). The pore surface of S. tomentosus is also darker when young, (Bessette).Habitat
scattered to densely gregarious on ground under pines, (Arora), single, scattered, or in groups on ground under pine, (Bessette), type single to gregarious in sandy soil in mixed woods, (Smith)
Synonyms
Synonyms and Alternate Names:
Boletus pulcherrimus Thiers and Halling