Observation 24654: Hydnellum scrobiculatum (Fr.) P. Karst.
When: 2009-08-23
No herbarium specimen

Proposed Names

83% (3)
Eye3 Eyes3
Recognized by sight: Growing under hardwoods
Used references: Tom Volk’s comment below.

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
The spores also look different, more rounded in scrobiculatum ….
By: Gerhard Koller (Gerhard)
2009-08-26 07:14:10 PDT (-0700)
mostly oak
By: Dan Molter (shroomydan)
2009-08-23 19:23:04 PDT (-0700)

These were growing under mixed hardwoods. Oak leaves and a half eaten acorn can be seen in the photos. There were no pine trees within a hundred yards.

I guess the ecological criterion makes this H. scrobiculatum.

By: Tom Volk (TomVolk)
2009-08-23 19:14:22 PDT (-0700)

Hi Dan. Under what host were these growing? If under hardwoods, this is H. scrobiculatum (which also grows under pines). So far as I know H. concrescens grows only under conifers. From my student Sean Westmoreland’s thesis:

24. Fruiting body 9 cm wide or wider, usually highly concrescent; scrobiculate or colliculose at disc; spores 5-6 × 4-5µm, with prominent, round, pointed tubercles; growing under conifer or hardwoods
H. scrobiculatum

24. Fruiting body smaller, up to 5 (7) cm wide; usually gregarious but with concrescent patches; slightly colliculose or scrobiculate; spores 4-5 × 3-4µm, with worn down tubercles appearing almost smooth but appearing uneven; growing under pines
H. concrescens

Created: 2009-08-23 08:43:59 PDT (-0700)
Last modified: 2009-08-23 08:43:59 PDT (-0700)
Viewed: 141 times, last viewed: 2016-05-17 17:03:08 PDT (-0700)
Show Log