Observation 181589: Pisolithus Alb. & Schwein.

When: 2014-10-03

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

Who: Jacob Kalichman (Pulk)

Specimen available

With pine.

Main part of main fb is the normal shape, maturing vertically, with a slice of missing peridium exposing the spores, with much of the rim of that “wound” charcoal-colored. It’s from resting on a desk on that surface in an enclosed area overnight. Pressure dissolves the peridium?

Weirdly shaped attached smaller fb’s. Much of the peridium is bumpy (bumps 3-4mm dia.) with darker spots in the middle of each bump.

There was another fb identical other than being correctly shaped (“flattened hemisphere on top of a frustum tapering downward” from obs 181472).


Peridioles (my stage descriptions are less accurate with older obses)

Stage 1. (before 1 in obs 181472)
- Dark olive-yellow spongy mass that, with pressure, easily squishes into black jelly. (Cut section = basically solid black jelly, with olive tint.)

Stage 2. (1 in obs 181472)
- Black & white mottled mass, the white easily turning to yellow when injured, spots streaking outward/upward.

Stage 3. (2 in obs 181472)
- Peridioles become distinct, interiors white. Easily agitated to yellow.

Stage 4. (2 in obs 181472)
- Peridioles now separable.
- Exteriors still white, gaining a slight pink tint (I believe this is metabolite release).
- Interiors still white.
- Medium agitation turns them gold.

Stage 5. (3 in obs 181472)
- Exteriors (white →) gain a pale olive tint.
- Interiors (white →) gain back some yellow.
- Medium agitation still turns them gold.

Stage 6. (3 in obs 181472)
- Exteriors olive powdery, hardly changed by gentle pressure.
- Interiors slightly purplish black jelly.

Stage 7. (5 in obs 181472)
- Exteriors’ olive gains some yellow.
- Interiors turn to brown powder (spores).

Stage 8. (6 in obs 181472)
- Peridiole exteriors & (now dry) jelly hold the spore mass solidly intact. This section is actually tougher than the ones below it.

Stage 9. (7 in obs 181472)
- Peridiole exteriors/jelly fade away with maturity.
- Cottony whisps appear with maturity (from ^?).
- Whisps keep the spore mass vaguely intact, whether or not they’re still contained by the fb peridium.


The smaller attached fb’s are missing one or more stages in 4 – 6!!

Proposed Names

84% (3)
Eye3 Eyes3
Recognized by sight

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Certain I am
By: Daniel B. Wheeler (Tuberale)
2014-10-05 03:34:35 CEST (+0200)

Pisolithus this is. Hoping still for species, too.

Created: 2014-10-05 01:23:24 CEST (+0200)
Last modified: 2014-10-08 01:10:54 CEST (+0200)
Viewed: 33 times, last viewed: 2017-06-19 07:07:03 CEST (+0200)
Show Log