Observation 77600: Lactarius psammicola f. glaber Hesler & A.H. Sm.
When: 2011-09-29
No herbarium specimen

Notes: Habitat:
Mycorrhizal. Within 200 ft are several species of oak, tulip poplar, dogwood, several other hard/soft deciduous woods and a couple species of pine.

Gills:
Subdecurrent. I’ll get more info on these Lactarius the next time a fresh fruiting occurs..

Cap:
Slightly concave to infundibuliform with a finely pubescent margin. The pileus often has distinct-concentric zonations. Specimens vary from 8-10 cm in cap diameter.

Stem:
Bare stipe which is about one-inch thick and snaps rather easily. Scrobiculi are sometimes present. Stipes are 2-4 cm long by 2-3 cm wide.

Spore print color:
I am assuming to be white.

Bruising:
None.

Other information:
The smell was unimpressive.

Species Lists

Images

171462
Russula sp. fruiting with a Lactarius sp.
229254
Scrobiuli are present on the left specimen, but no the right. The pilei have the same fine pubescence and zonations and were growing within 1/2 inch of each other.
229255
Cropped for convenience.

Proposed Names

-27% (1)
Recognized by sight
-29% (3)
Recognized by sight
Used references: Mushrooms Demystified

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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The photos of the cap and stipe are of the same specimen. – Two different species
By: Stephen (Ιερονυμοσ)
2012-06-19 14:38:23 EDT (-0400)

There were more about 100 ft. away that fruited at the exact same time. Those are were the ones fruiting under the white oak (now observation 97761). I just looked at those and they do appear to be of a different species, though the morphologies are rather similar. I guess it’s time to make a new observation …

EDIT: I just looked at these mushrooms which were fruiting with the Russula (this observation). They also have scrobiculate stipes, but the pilei are far different. These have distinct zonation.

EDIT2: If you loook very closely at image 171462 while on full size, you can see strobiculi present on the stipe, though it appears there aren’t any from other resolutions.

Looks like
By: walt sturgeon (Mycowalt)
2012-06-19 12:19:47 EDT (-0400)

three different species. The one with the scrobiculate stipe may be Lactarius psammicola form glaber but it it too damaged for me to tell for sure.

L. alnicola doesn’t seem to be a match
By: Joe Borysko (Pudd)
2012-06-19 12:11:10 EDT (-0400)

L. alnicola is described as having latex which does not become yellow, or becomes yellow very slowly.

No cystidia?
By: Stephen (Ιερονυμοσ)
2012-06-18 18:06:49 EDT (-0400)

I’ve been looking and, from what I’ve gathered, neither pleurocystidia nor cheilocystidia are present. Should I go et another sample and try again or does this sound plausible?

refers to

mushroomobserver.org/97761

Created: 2011-09-29 19:20:56 EDT (-0400)
Last modified: 2012-06-19 17:08:00 EDT (-0400)
Viewed: 201 times, last viewed: 2016-09-12 20:59:16 EDT (-0400)
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