Observation 141397: Russula subsect. Virescentinae
When: 2012-08-01

Notes: Russula cf. SPECIES #1 (Kibby/Fatto)
Scattered in duff cover soil under pure spruce in Heintooga picnic area, GSMNP
Pileus: 3-6.5 cm, 5B-D3-2, 5B6-7, 6D7, 2E-F minus 1, pulvinate to convex, depressed
only in center, crustose patches, granular, cuticle cracking in center; margin inrolled
when young, even; context white, very firm, compact; odor ranging from strong, sweet
nectar (baby-killing_ to flowery to rotting dead deer to swamp gas to rotting sea, taste
mild; cuticle peeling ¾; SP D/E
Lamellae: adnate, grey-yellow to yellow-cream, close to crowded, no forking; guaiac +
(green)
Stipe: 4-6 cm x 9-18 mm; cream with bright yellow to olive green to peach, smooth,
solid, compact; context mostly white, hollow without insects, grayish streaks present;
FeSO4 pink to brown on surface and context (purple), guaiac +
(green); FI/JLNQT
Spores: (11-)10-8.8-7.6(-7.5) × (8.2-)7.2-6.4-5.7(-5.4) µm, Q= (1.59-)1.49-1.37-1.24(-1.17), reniform to ellipsoid to broadly ellipsoid, inamyloid plage; ornamentation up to (0.48-)0.45-0.39-0.32(-0.26) µm, subreticulate, composed of amyloid isolated blunt warts with a network of connectives and chains
Basidia: 4-sterigmate, clavate, (57-)53-49-45(-44) × (11.9)11.6-10.8-10.0(-9.5) µm
Gloeocystidia: clavate to cylindrical, contents in sparse globs, (84-)75-66-56(-50) × 14.8-11.3-7.8(-6.7) µm
Pileipellis: ~380 µm wide, ixocutis; subpellis with interwoven septate hyphae, not well-differentiated; suprapellis made up of pseudoparenchymous endcells

Proposed Names

83% (1)
Eye3 Eyes3
Used references: Kibby & Fatto key, Buyck provisional key (Russulales News)
28% (1)
Used references: Buyck provisional key

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Excellent work!
By: I. G. Safonov (IGSafonov)
2013-07-30 16:37:47 PDT (-0700)

It’s always such a pleasure to see mycologists with commendable microscopy skills, attention to detail, and dedication to do the hard work on mushrooms from a genus that most people have given up on (yeah, just another Russula), take the time to collect every bit of data and then post their Obs on MO. Great work! I reckon you are a researcher working on the genus Russula

Good habit and trend
By: Christian (Christian Schwarz)
2013-07-30 15:38:35 PDT (-0700)

It’s great to see descriptions coming in standard with a lot of users’ observations.

Very descriptive observation!
By: Martin Livezey (MLivezey)
2013-07-30 15:32:12 PDT (-0700)

Created: 2013-07-30 12:41:34 PDT (-0700)
Last modified: 2013-07-30 12:49:04 PDT (-0700)
Viewed: 42 times, last viewed: 2016-10-26 05:51:16 PDT (-0700)
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