Suillus glandulosipes A.H. Sm. and Thiers
No common name
Suillaceae

Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.

Introduction to the Macrofungi

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Map

E-Flora BC Static Map

Distribution of Suillus glandulosipes
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Species Information

Summary:
Distinctive features are 1) the conspicuous cottony tissue on the cap margin when young and 2) the numerous glandular dots and smears that are inconspicuous becoming conspicuous, pale becoming dark brown to black. Other features include 3) a viscid to glutinous, bald cap that is yellowish to pale pinkish tan or reddish cinnamon to cinnamon, 4) white to pale flesh that does not turn blue, but may turn brownish in the stem base when injured, 5) angular buff to yellowish pores that that sometimes become olive-brown (but do not change color when bruised) and when young often have reddish brown moisture droplets, 6) white to pale yellow stem that stains brown when handled and does not have an annulus, and 7) growth under pine. Nguyen(3) provide molecular and other evidence to show that Suillus neoalbidipes should be considered a synonym of Suillus glandulosipes. Because considerable extra information is contained in the S. neoalbidipes descriptions, those are included too. Suillus neoalbidipes was previously referred to as Suillus albidipes, but the type for that species was found to be Suillus granulatus.
Chemical Reactions:
flesh stains lilac-gray with application of KOH and olive-green with FeSO4, (Bessette), cap cuticle stains grayish olive with application of KOH, and greenish gray with FeSO4; flesh stains pink then lilac-gray with application of KOH, olive-blue to bluish gray with FeSO4, (Bessette for Suillus neoalbidipes)
Odor:
not distinctive (Bessette, Smith, Palm)
Taste:
not distinctive (Bessette, Smith)
Microscopic:
spores 6-9(12) x 3-4 microns, cylindric to subelliptic [nearly elliptic], smooth, pale yellow, (Bessette), spores 6-9(12) x 3-4 microns, cylindric to subelliptic, smooth, colorless to pale ochraceous in KOH, thin-walled; basidia 4-spored, 23-28 x 5-8 microns, clavate, colorless, content often granulose in KOH; pleurocystidia very rare, found only near tube mouths, 30-50 x 7-12 microns, fasciculate, (no single ones seen), basal part staining dark brown revived in KOH, apical part typically staying colorless, contents sometimes staining brownish, cheilocystidia very abundant, completely occupying pore margin, similar in size and shape to pleurocystidia, dark brown in KOH; cap cuticle a broad (330 microns) layer of interwoven hyphae, gelatinous, contents of hyphae appearing brownish granulose in KOH, outermost hyphae often somewhat enlarged and incrusted; surface of stem a gelatinous layer with numerous fascicles of darkly staining caulocystidia similar to the pleurocystidia; clamp connections absent, (Smith), spores 6-10 x 2-3 microns, elliptic, to fusiform [spindle-shaped] to somewhat oval, strong yellow with some strong yellowish brown in Melzer''s, "light greenish yellow in KOH"; basidia 4-spored, 16-20 x 3-6 microns, mostly clavate, pale greenish yellow in KOH; pleurocystidia infrequent to rare, 20-45 x 5-10 microns, narrowly clavate to clavate, mainly near bases of tubes, incrusted, cheilocystidia 19-65 x 4-11 microns, "mostly narrow clavate to clavate, in large, often coalesced clusters", colorless to brown, brown-incrusted at base and often around cluster; cap cuticle a collapsed ixotrichodermium of partially or strongly gelatinized hyphae, 2-5 microns wide, "small granules scattered on hyphal surfaces"; clamp connections not observed, (Palm for S. neoalbidipes)
Spore Deposit:
brown (Bessette), dark brown when moist, deep yellowish brown to dark yellowish brown when dry, (Palm for S. neoalbidipes), yellow-brown (Bessette for S. neoalbidipes), dull reddish brown (McKnight for S. neoalbidipes)
Notes:
Suillus glandulosipes is fairly common in the Pacific Northwest and northern CA, and has been reported from MI, (Bessette). There is a collection from OR at Oregon State University. Suillus neoalbidipes is considered a synonym here based on Nguyen(3). S. neoalbidipes is found in northeastern North America, west to WI and the Pacific Coast, (Bessette), OR (collections at Oregon State University), WA and WY (collections at the University of Washington), MN (Palm), and NS (Grund). It has been reported from BC (in Redhead as Suillus albidipes), and there is a collection at Pacific Forestry Centre in Victoria from BC as Suillus granulatus that is found in the Nguyen(3) phylogenetic tree with Suillus glandulosipes.
EDIBILITY
yes, remove gluten, (Bessette), recently reported as toxic (McKnight, 1987, for S. neoalbidipes)

Habitat and Range

SIMILAR SPECIES
Suillus granulatus has a bald cap margin rarely with a minute tomentum on the immature cap margin, large clusters of caulocystidia, and numerous clusters of pleurocystidia, and Suillus brevipes has a bald cap margin, small clusters of caulocystidia, and numerous clusters of pleurocystidia, whereas S. neoalbidipes has a distinct band of cottony tissue on the margin of young caps, small clusters of caulocystidia, and rare to few clusters of pleurocystidia, (Palm). See also SIMILAR section of Suillus albivelatus, Suillus granulatus, Suillus luteus, Suillus pallidiceps, Suillus pseudobrevipes, and Suillus quiescens.
Habitat
scattered or in groups on ground under pine (Bessette), type gregarious to cespitose [in tufts] in humus under scrubby Lodgepole Pine (Pinus contorta) in pygmy forest, (Smith), near 2-needle, 3-needle, or 5-needle pines, (Palm for Suillus neoalbidipes), single, scattered, or in groups in sandy soil under pines, (Bessette for S. neoalbidipes)

Synonyms

Synonyms and Alternate Names:
Cantharellus laevis Fr.
Cyphellostereum laeve (Fr.) D.A. Reid