When: 2008-11-11

Collection location: Little River, Mendocino Co., California, USA [Click for map]

Who: Ryane Snow (snowmam)

No specimen available


Proposed Names

-17% (3)
Recognized by sight: found at the edge of mixed conifer forest
Used references: Arora, D., MD, p.500

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= Observer’s choice
= Current consensus


Add Comment
I am struck by the very colorful dusky purple and brown veil on S. luteus in Dimi’s photo.
By: Debbie Viess (amanitarita)
2008-11-12 21:36:54 SAST (+0200)
Couldn’t be S. luteus. Try the obvious thing — Suillus ponderosus.
By: Dimitar Bojantchev (dimitar)
2008-11-12 20:12:18 SAST (+0200)

Ryan, and everybody, when identifying species in the Genus Suillus the
identification of the tree host is of special importance. Suillus
luteus is a species known almost entirely from the well known
White/Scott’s Pine (Pinus sylvestris), which is not native to
Calfiornia. It would be a significant scientific discovery to find
S. luteus in the natural forests of Mendocino.

Here is a link to Suillus luteus from planted Pinus sylvestris in the
East Bay.


What you have there almost certainly is one of the typical members of
the SUillus group from Mendocino — Suillus ponderosus, which grows
with Douglas Fir and has a distinct, thick orange veil.


Also, keep in mind that doing an id on a single specimen is a terrible
idea in general. One needs at least few in varying ages.

Ohh, also, David Arora tends to treat S. caerulescens and
S. ponderosus as nearly the same thing, but my observations do not
support that. I think they are quite, quite distinct and easy to tell

There are 3-4 common Suillus species in the Mendocino forests. We
should learn them pretty well, cause they are rather easy. Some other
Suillus are very hard to id.

Have fun out there, hope we’re learning somehting here.

D. www.mushroomhobby.com
It’s a dead-ringer for ponderosus in the Bessettes bolete book.
By: Debbie Viess (amanitarita)
2008-11-12 20:10:05 SAST (+0200)
keyed out to S. luteus
By: Ryane Snow (snowmam)
2008-11-12 19:40:57 SAST (+0200)

keyed this mushroom out using Thiers, H. D., California Mushrooms – A Field Guide to the Boletes. It keyed out to S. luteus. Cap color – yellow brown to reddish brown; the stipe under the annulus has purple glandular dots and also above the annulus on a pale yellow background. Veil is membranous with a gelatinous orange to vinaceous zone on underside. Much of the stipe is purplish brown beneath the annulus.

Arora Demystified
By: Irene Andersson (irenea)
2008-11-12 19:02:33 SAST (+0200)

may not be the best source of information when it comes to ID:ing a Suillus.
He mentions that North America has 70+ of them, but describes only 14..

that is one bright suilli!
By: Debbie Viess (amanitarita)
2008-11-12 17:35:43 SAST (+0200)