Observation 5240: Melanoleuca exscissa (Fr.) Singer

When: 2007-11-25

Collection location: Sebastopol, Sonoma Co., California, USA [Click for map]

Who: Darvin DeShazer (darv)

No specimen available

Notes:
Spores 7-9 um, amyloid with small warts.
Cheilocystidia septate with a dot in the middle of the septum and some with Inocybe type encrusted crystals on the apex.


Very similar or the same as M. utahensis. Mycologia 69: 927-951. However, the key and description lacks the clarity of Bas, et al.


References:
Bas, C., TH. W. Kuyper, M. E. Noordeloos and E. C. Vellinga. 1999. Flora Agaricina Neerlandica: Critical Monographs on Families of Agarics and Boleti Occurring in the Netherlands. Volume 4: Strophariaceae, Tricholomataceae (3). A. A. Balkema, Rotterdam, Netherlands. 191p.


Gillman, L. S. and O. K. Miller. 1977. A Study of the Boral, Alpine and Arctic Species of Melanoleuca. Mycologia 69: 927-951.


Hanson, Lise and Henning Knudsen. 1992. Nordic Macromycetes Vol. 2: Polyporales, Boletales, Agaricales, Russulales. Nordsvamp Pub., Copenhagen, Denmark. 474p.

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Comments

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Very nice — I agree with the id
By: Dimitar Bojantchev (dimitar)
2008-01-13 12:56:03 CST (-0500)

I have reached the same conclusion regarding the id — my collection was on 2007-11-20.

http://mushroomhobby.com/temp/Melanoleuca%20exscissa%201.jpg
http://mushroomhobby.com/temp/Melanoleuca%20exscissa%202.jpg

Considering htat the Genus is in a dire need of a complete rewrite, the sources available to me, plus the microsocpy suggested strongly M. exscissa. I see the same septate cystidia.

Now on to the other Melanoleuca spp.

Dimitar

Created: 2007-11-27 22:27:51 CST (-0500)
Last modified: 2018-01-03 10:39:11 CST (-0500)
Viewed: 151 times, last viewed: 2018-11-04 21:31:45 CST (-0500)