Observation 28719: Lactarius argillaceifolius var. megacarpus Hesler & A.H. Sm.

When: 2009-11-24

Collection location: Orinda, California, USA [Click for map]

Who: Richard Sullivan (enchplant)

No specimen available

Notes:
growing in huge numbers under leaf litter of Quercus agrifolia

Images

spores at 1000x in Melzer’s reagent. Note the reticulations and ridges.
spores at 1000x in Melzer’s reagent. Note the reticulations and ridges.

Proposed Names

38% (6)
Recognized by sight
77% (5)
Recognized by sight: Mild taste, white latex , rusty stains on old wounds, lilac gray cap.

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= Observer’s choice
= Current consensus

Comments

Add Comment
Microscopy of Spores
By: Richard Sullivan (enchplant)
2009-11-26 11:34:02 CST (-0500)
Latex
By: Richard Sullivan (enchplant)
2009-11-25 02:26:41 CST (-0500)

Okay, my curiosity peaked and I went out to the spot near my house where it was growing. I have the sucker beside me. Yes it is a Lactarius, good call Shane. Latex is white and after 15 mins is still white. Old wounds are yellowish rust colored. Taste is mild for a Lactarius. I am not running to spit it out. KOH stains the cap pale yellow, removes the lilac color. Looks like it keys out to L. argillaceifolius var. megacarpus

It could be a Lactarius
By: Richard Sullivan (enchplant)
2009-11-25 01:38:16 CST (-0500)

the cap is zoned and the gill attachment is wrong for clitocybe. I’ll check tomorrow.

Latex
By: Richard Sullivan (enchplant)
2009-11-25 01:19:46 CST (-0500)

Christian, I don’t think this is a Lactarius. I didn’t look for latex. I thought it was one of the blewits ( very pale ones) I saw here last year. I’ll go back tomorrow and check it out properly. Always worth a second look!

Did you happen to see the color of the latex?
By: Christian (Christian Schwarz)
2009-11-25 00:58:20 CST (-0500)

Created: 2009-11-24 23:20:25 CST (-0500)
Last modified: 2009-11-24 23:20:25 CST (-0500)
Viewed: 125 times, last viewed: 2019-01-31 15:22:49 CST (-0500)
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