Observation 187176: Lactarius Pers.
When: 2014-11-02
No herbarium specimen

Notes: Large Lactarius, one of the largest I’ve found in this area. Without latex, at least as dried for 1 day. Tried to keep as try as possible. Maybe too dry. Edge of cap is bearded.

Images

477951
Stipe with occasional orange scrobiculations.
477952
Scraped the stipe with my fingernail (right side). No latex.
477953
Note that many of the gills at their base are growing together, then becoming free at the end. I have not seen this before.

Proposed Names

57% (1)
Eyes3
Recognized by sight: Stipe is scrobiculate. No latex present on either stipe or cap where injured.
11% (2)
Eye3
Used references: Mushrooms Of Northwest North America, by Helene M.E. Schalkwijk-Barendsen

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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By: Daniel B. Wheeler (Tuberale)
2014-11-03 19:00:57 CST (-0500)

according to Helene M.E. Schalkwijk-Barendsen in Mushrooms of Northwest North America, Noah.

Helene says “… widespread in the Pacific Northwest. Depending on the growing conditions, this species can be small or large.”

The cap was mostly white with white beard, but had a lot of humus over the cap. The photos of the cap did not turn out.

Lactarius deceptivus
By: Noah Siegel (Noah)
2014-11-03 14:04:40 CST (-0500)

is an eastern species with a heavily bearded margin when young, and white, unchanging latex.

This is in the group of large, whitish Lactarius with yellowing latex. Another option is Lactarius resimus (sensu PNW). Have a cap picture?

Apologies, A. virosa.
By: Daniel B. Wheeler (Tuberale)
2014-11-03 13:51:38 CST (-0500)

I am having difficulty getting complete descriptions. The edge of the cap was bearded. In Mushrooms of North America, Helene mentions Lactarius scrobiculatus var. pubescens, but says it like limestone. There is little limestone (none?) in the Cascades, which are noted for their andesite and massive basaltic lava flows.

Created: 2014-11-03 13:15:37 CST (-0500)
Last modified: 2014-11-03 14:01:51 CST (-0500)
Viewed: 35 times, last viewed: 2015-09-23 20:58:48 CDT (-0400)
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