Observation 163288: Pluteus orestes Vellinga & Justo
When: 2014-04-10

Notes: Single fruit-body growing on the ground, probably on buried wood among mixed conifers @ 3600 ft..
Cap 6.1 cm across.
Spores fairly variable in size, ~ 7.0-10.1 X 5.0-7.2 microns, broadly ellipsoid to ellipsoid. Q(ave) = 1.35.
Gill cystidia fairly plentiful and also somewhat variable.
Cheilocystidia ~ 70-80 X 16-30 microns, usually lageniform with short horns.
Pleurocystidia up to 100 microns long, many setiform or broadly lageniform.


Spores in KOH @ 1000X.
Cheilocystidia in Congo red + KOH @ 1000X.
Pleurocystidia @ 1000X.
Large Pleurocystidia @ 1000X.
Cheilocystidia @ 1000X.
Clamp connection on pileipellis
Clamp connection on pileipellis.

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Thanks Fredo.
By: Ron Pastorino (Ronpast)
2014-04-16 12:33:53 WIB (+0700)
cool photos
By: Alfredo Justo (Fredo)
2014-04-16 09:26:50 WIB (+0700)

yes, the last photo are the cheilocystidia, at least the upper part of them,

very likely this is the same as http://mushroomobserver.org/80923, a Western, conifer-loving species in the P. pouzarianus complex that soon will be described as a new species

Fredo, I’ve added some micro photos.
By: Ron Pastorino (Ronpast)
2014-04-16 07:50:09 WIB (+0700)

Definitely clamp connections seen on the pileipellis.

clamps on pileipellis?
By: Alfredo Justo (Fredo)
2014-04-16 01:35:35 WIB (+0700)

a key character is the presence of clamps on pileipellis, check for those

also check for cheilocystidia, the photo that you have labelled as cheilocystidia is in fact a pleurocystidium. The cheilocystidia are not thick walled and lack any apical horns, they should be narrowly clavate or cylindrical

this might be the same as your collection http://mushroomobserver.org/80923 or some other closely related species

Created: 2014-04-13 05:50:11 WIB (+0700)
Last modified: 2014-09-25 01:06:41 WIB (+0700)
Viewed: 96 times, last viewed: 2017-04-20 13:37:30 WIB (+0700)
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