Notes:
Growing on a grassy patch under the canopy of a massive scarlet oak. These little boletes fruit there a few times every year and are usually the first boletes of the season. This year they appeared earlier than usual following a wet and warmer-than-average spring. I usually don’t pick them. What’s the point?!
It rained heavily the night before, so surprisingly the fb was not in such a terrible shape. The bottom half of the stipe, however, was thoroughly rotten and damaged by fly larvae inside.
It dropped a few spores, but I understand that campestris, harrisonii and rubellus all have almost identically sized spores (as per M. Kuo).
I don’t think this is rubellus just because it’s supposed to be an exotic imported species. The chemical tests are very consistent with those reported by M. Kuo for harrisonii: KOH = dingy mustard yellow on cap cuticle and orange on cap flesh; NH4OH = initially negative, then slowly pale yellow on cap cuticle, negative on cap flesh but erased the bluing.

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Based on chemical features: KOH & NH4OH reactions on cap cuticle and flesh

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Created: 2018-06-05 03:52:20 BST (+0100)
Last modified: 2018-06-05 03:52:26 BST (+0100)
Viewed: 19 times, last viewed: 2019-02-21 04:48:08 GMT (+0000)
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