Observation 182819: Rhizopogon Fr. & Nordholm

When: 2014-10-10

Collection location: Del Mar, California, USA [Click for map]

Who: Jacob Kalichman (Pulk)

Specimen available

Growing in damp soil in a house yard.

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At that distance, I suppose pine is possible for these
By: Jacob Kalichman (Pulk)
2014-10-17 16:44:53 PDT (-0700)
Mycorrhizal associations
By: Daniel B. Wheeler (Tuberale)
2014-10-17 16:32:19 PDT (-0700)

can be at considerable distance, Jacob. Pinus would be primary hosts. For example, a 150-foot pine tree could be 300-450 feet away, yet produce sporocarps here. Mycorrhizal mycelium is commonplace in nearly all soils anywhere. Part of what defines a desert is the lack of mycorrhizae. The halo effect of mycorrhizal fungi is 2-3 times the height of the potential host plant.

Spongy, yes
By: Jacob Kalichman (Pulk)
2014-10-17 14:21:34 PDT (-0700)

Mycorrhizal… I’m doubtful. The 3 similar collections I’ve found recently didn’t have any host candidates in common, as far as I know. Have any specific types of plants to look out for?

Should feel like a sponge:
By: Daniel B. Wheeler (Tuberale)
2014-10-17 12:27:55 PDT (-0700)

giving slightly when squeezed. Rhizopogons are always mycorrhizal IME. Was there a tree or other possible host plant nearby?

Created: 2014-10-14 12:43:57 PDT (-0700)
Last modified: 2014-10-16 01:06:25 PDT (-0700)
Viewed: 51 times, last viewed: 2017-06-18 23:27:38 PDT (-0700)
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