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 Add this item to the list   552490 Original description
Remarks (public):Cortinarius glutinosoarmillatus is a very common species under oaks and occasionally under tanoak throughout the range of its hosts. The fruiting period is from late fall to early spring. Cortinarius glutinosoarmillatus was known as C. trivialis sensu auct. CA for a long time, but differs morphologically significantly from its European relatives by the range of coloration and the larger spores. The tanoak collections of this species tend to have paler and more yellowish colors without the bluish tinges of the oak collections. Genetically, C. glutinosoarmillatus has a large gap of 59 missing base pairs in its ITS1 region, compared to its closest relatives. 
Description type:Original description 
Description:Pileus 40–100 mm diam., convex to plano-convex to broadly umbonate, margin involute, wavy at age, color olive blue to olive yellow at first, darker ocherish on the disk, remaining olive blue on the margin, profusely gelatinous when moist, velar remnants often sticking on the margin. Lamellae moderately crowded, 6–12 mm broad, light bluish or whitish at first then pale yellow to pale bluish, darker yellow, turning rusty brown as spores mature; edges even, attachment sinuate; lamellulae abundant. Stipe 80–160 mm long, 18–30 mm wide, cylindrical to subclavate, with distinct gelatinous girdles forming as the stipe lengthens and the gelatinous layer breaks, more so in the lower half, distinct annular zone present near the apex, pale white to bluish overall, bluish at the apex, then discoloring to yellow brown where the gelatinous surface layer peels off. Universal Veil white, gelatinous. Cortina whitish, gelatinous. Context whitish at the center, often bluish at the edge. Odor not distinct. UV negative. Macrochemical Reactions 5% KOH no reaction. Spore Deposit dark rusty brown. Basidiospores (13.2–) 14.0–15.0 (–15.5) × (7.5–) 7.8–8.3(–8.7) µm (mean 14.3 × 8.0 µm) (N = 33, 2 basidiomata, one collection), ellipsoid, strongly verrucose. Basidia 28–42 × 7–11 µm, 4-spored, cylindro-clavate, clamped. Lamella edge sparsely fertile. Cystidia not observed. Lamellar Trama regular, composed of more or less parallel, cylindrical hyphae, 4–7 µm wide. Pileipellis composed of thin entangled hyphae (3-7 µm) suspended in a thick gelatinous layer, hyaline to yellow intercellular pigment, clamped. Clamp connections common on all septa. 
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