When: 2008-11-05

Collection location: Salt Point State Park, Sonoma Co., California, USA [Click for map]

Who: Ron Pastorino (Ronpast)

No specimen available

Growing on and around an old mossy stump…possibly redwood.


Proposed Names

0% (2)
Recognized by sight: I’d call it that, because I tend toward lumping. How is this one different from Laetiporus sulphureus?

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

= Observer’s choice
= Current consensus


Add Comment
Laetiporus in the west
By: Tom Volk (TomVolk)
2008-11-07 17:16:21 CST (-0600)

So far we have no record of Laetiporus sulphureus (sensu stricto) in the west, but I’m not sure we have ever seen specimens from red alder or oak. It’s possible that one of the other species can jump host, or we may just have never studied the right specimens. If you find fresh Laetiporus specimens on alder or oak, send me an email at volk.thom@uwlax.edu— we would need fresh specimens to get cultures. thanks

New to me, Debbie.
By: Daniel B. Wheeler (Tuberale)
2008-11-07 13:10:54 CST (-0600)

I’m heard of L. gilbersonii, but never thought I’d seen it. We also have Laetiporus growing on Red alder (larger, older logs), and some other hardwoods. Most trees in Oregon grow too fast to get much heartwood, and Laetiporus seems to prefer the lignin content. Sometimes Oregon White oak (Quercus garryana) will have significant amounts, but mostly I’ve seen Laetiporus on either conifers or Red alder. Learned about this first when I tried inoculating what Stamets called L. sulphureus (but may be L. gilbrsonii?) on Douglas fir stumps at Paul Bishop’s Tree Farm. Didn’t get anything to grow, except other fungi. The next year L. conifericola was announced. I’m still not sure if that means I was unsuccessful growing L. sulphureus or L. gilbersonii.

growth on conifers and Western range…no sulphureus out West any more!
By: Debbie Viess (amanitarita)
2008-11-06 09:42:29 CST (-0600)

altho morphologically identical, it will not mate with sulphureus of the East, which makes it a different species.
L. gilbertsonii is the western sulphur shelf that grows on oak and euc.

perhaps Tom could elucidate further?

L. sulphureus vs. L. conifericola
By: Daniel B. Wheeler (Tuberale)
2008-11-06 04:34:38 CST (-0600)

It’s mostly what they grow on. L. sulphureus is specific to hardwoods, especially those with some heartwood. L. conifericola is specific to conifers, such as Sitka spruce, Western hemlock, Douglas fir, and true firs.