Observation 260133: Helvella lacunosa Afzel.

When: 2016-11-04

Collection location: Clearwood Community, Yelm, Thurston Co., Washington, USA [Click for map]

Who: Laplander

No specimen available

In a culvert as a pair about ten inches apart. Growing on Doug fir needles and other debris, also near an unidentified Cortinarus and Russula brevipes.


Two cold days after continuous rain for weeks. I looked in this region and saw the Cortinarius but either missed these or they came up overnight, because they are within a foot of the Agaric.
I seeded red clover which is coming up allaround but not in this particular patch. The ground is deep with Doug Fir needles in a rain culvert beside an asphalt road.
Both mushrooms had a tuft of soft cottony rhizoids embeded in the ground. When I washed the base, these (mycorhizzal?) extensions fell off, so I don’t know they are actually part of the mushroom.
The other base
10 cm length with 1.5 cm cap length for the shorter, 13 X 4.5 for the longer.
cap shape was irregular with about a 4 cm maximum width for the longer. Stems were even with a 0.8 and 1.2 cm width.
Interior of stem was channeled with reticulate channels at base. Top extended into cap, which lacked gills or obvious pores on the thin cap sporting what looked like a smooth hymenium.
More detail of cap and split stem
Detail of stem split lengthwise
One half of base
Other half of base
More detail

Proposed Names

54% (1)
Used references: Lincoff

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

= Observer’s choice
= Current consensus


Add Comment
No one has commented yet.