Suillus collinitus
Suillus collinitus
Siullus collinitus
Spore print
Spores
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Suillus collinitus (Fr.) Kuntze, 1898
Description: Medium boletes, solitary to scattered, on soil often associated with Pinus halapensis.
Pileus: Convex becoming flat with age, smooth and sticky, colour variable from orange-brown to red-brown to brown, rounded to irregular in shape with a diameter up to 100mm.
Stipe: Pale yellow in colour with characteristic red-brown spots, short and fleshy, straight thickening slightly towards the base, with pink mycelium.
Pores: Yellow without colour change on bruising or cutting, angular, attached to stipe.
Spore print: Pale brown.
Flesh: Yellow coloured with no colour change on cutting or bruising.
Colour tests:
Iron sulphate - Faint blue colour on cap
Ammonia - Blue grey (cap and stipe), brown (pores)
KOH - Blue grey (cap, fainter on stipe), brown (pores)

Microscopy:
Cystidia: Not seen.
Spores: Fusiform, smooth, 8.3-10.2µm x 3.9-4.7µm, Q=1.89-2.32, Qm=2.10
CS4 Buskett (17/10/09)
Spores
Spore print
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BOLETALES
Suillaceae