Suillus tomentosus (Kauffman) Singer, Snell, and E.A. Dick
tomentose suillus
Suillaceae
Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.
Introduction to the Macrofungi
tomentose suillus
Suillaceae
Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.
Introduction to the Macrofungi
Species Information
Summary:
Features of Suillus tomentosus include 1) a dry to viscid cap that has grayish brown to ocher, olive-yellow or reddish brown fibrils or scales on yellow to orange yellow background, 2) pallid to yellow flesh that turns blue, 3) brown then yellow pores that turn blue when bruised, 4) stem the same color as the cap or more orange, with glandular dots on stem that are usually browner, and no partial veil or annulus, and 5) growth under conifers, particularly 2-needle pines. The fruiting body tends to stain the fingers brown. S. tomentosus is very common in the Pacific Northwest.
Chemical Reactions:
cap surface stains pale gray with application of FeSO4, (Bessette), flesh pale gray with FeSO4, (Thiers)
Odor:
not distinctive (Bessette), none (Smith)
Taste:
not distinctive (Bessette), slightly acid to mild (Smith)
Microscopic:
spores 7-12 x 3-5 microns, fusoid to elongate-oval, smooth, yellowish, (Bessette), spores 7-10(12) x 3-4(5) microns, obscurely fusoid to elongate-ovoid, smooth, inamyloid, pale yellowish in KOH; basidia 4-spored, 26-34 x 5-8 microns, clavate, yellowish in KOH; pleurocystidia "30-46 X 7-10 microns, subcylindric to narrowly clavate or narrowed to a blunt apex, often with incrusting debris", content colorless to dingy yellow-brown, "typically in bunches and at level of hymenium the cluster surrounded by brown incrusting material, as revived in KOH", when fresh colorless to pale vinaceous brown in KOH, cheilocystidia "similar to pleurocystidia, very numerous and tube dissepiments often with copious brown amorphous pigment"; cap epicutis "a layer of gelatinous interwoven hyphae in the form of an interrupted trichodermium the elements of which become fused to form the squamules", these hyphae 8-12 microns wide, with end-cells somewhat cystidioid and 10-16 microns at widest part; caulocystidia abundant, similar to cheilocystidia; clamp connections absent, (Smith)
Spore Deposit:
brown (Bessette), dark olive brown, very slowly changing to dull cinnamon, (Smith)
Notes:
It is found in WA, OR, ID, CA, CO, MI, WY, (Smith(34)), NB, NS, PQ, and NC, (Both). It is widely distributed from eastern Canada south to NC and SC, west to the Pacific Northwest, south to CA, (Bessette). It has been reported from BC (Bandoni), and MT (L. Evans, pers. comm.). Var. discolor occurs in ID.
EDIBILITY
edible (Bessette)
Habitat and Range
SIMILAR SPECIES
Suillus fuscotomentosus does not stain blue, its cap color is darker, and its spores are larger, (Smith). |Suillus discolor (=Suillus tomentosus var. discolor) grows on the ground under white pine and has a dense appressed layer of grayish fibrils on the cap when young, a bald, glutinous to viscid, brownish to olive-brown cap that becomes dull cinnamon brown at maturity, dingy ochraceous flesh "that typically stains blue when exposed and slowly stains green with the application of FeSO4", "dingy ochraceous pore surface that slowly and slightly stains greenish blue, then brownish when bruised", stem "with coarse, ochraceous to orange-brown glandular dots that soon become dark brown to grayish brown from handling", yellow-brown spore deposit, and spores 9-13 x 4-4.5 microns, (Bessette). Both(1) says var. discolor differs in its association with white pine, different color of cap, pores less brown, and different color of spore deposit.Habitat
scattered or in groups under conifers, (Bessette), scattered to gregarious under 2-needle pines, (Smith), summer and fall (Miller), primarily under Lodgepole and Shore Pines (Trudell)
Status Information
Synonyms
Synonyms and Alternate Names:
Ptychoverpa bohemica (Krombh.) Boud.