First person to use this name on MO: Nathan Wilson
Name: Suillus caerulescens
Author: A.H. Sm. & Thiers
Citation: A Contribution Toward a Monograph of North American Species of Suillus, p. 38, pl. 11. 1964.
Cap: 6-14 cm; convex becoming broadly convex or flat; moist or fairly slimy; smooth or with patches of appressed fibers or scales; yellowish brown to tawny or cinnamon brown; the margin sometimes hung with partial veil remnants.
Pore Surface: Yellowish; bruising slowly reddish brown; pores angular and radially arranged (but not boletinoid), about 1-2 mm across; tubes to about 1 cm deep.
Stem: 3-8 cm long; 2-3 cm thick; more or less equal, or tapered in either direction; solid; often finely reticulate near the apex; smooth or with appressed hairs; lacking glandular dots; yellowish above, dingy to brownish below; bruising brown; with a whitish, dry ring that soon collapses or disappears entirely.
Flesh: Pale yellow; staining blue in the stem base when exposed, elsewhere not staining or staining pinkish to brownish.
Odor and Taste: Mild or slightly acidic.
Chemical Reactions: Ammonia grayish on cap; pale grayish lilac on flesh. KOH olive gray becoming dark gray on cap; dark gray on flesh. Iron salts olive on cap; olive to bluish on flesh.
Spore Print: Cinnamon brown.
Microscopic Features: Spores 8-11 × 3-5 µ; smooth; subfusoid.
Created: 2007-01-10 00:03:40 CST (-0500) by Nathan Wilson (nathan)
Last modified: 2013-12-28 21:45:35 CST (-0500) by Nathan Wilson (nathan)
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