Observation 123269: Russula raoultii Quél.
When: 2013-01-20
0 Sequences

Original Herbarium Label: Russula raoultii Quél.
Growing on mossy rotting Pseudotsuga menziesii log
Spores 8-10 × 7-9 µm, ornamentation low ridges reticulate
Taste acrid

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Two different sizes of spoers
By: Oluna & Adolf Ceska (aceska@telus.net)
2013-01-24 19:52:46 EST (-0500)

Christine Roberts (2007) commented in her Ph.D. thesis on the difference in the size of spores in Russuala raoultii on the NA continent. She also pointed out that the Pacific Coast populations have larger spores than the “R. raoultii” s.str., when all the other characters remain the same. The University of British Columbia has a Ph.D student (she came in summer 2012) and she will be looking at this and similar problems in the genus Russula, doing the DNA sequencing.

By: Irene Andersson (irenea)
2013-01-24 04:38:40 EST (-0500)

is not likely. It has smaller spores and grows with hardwoods, usually beech.
The cap colour has lead me in wrong directions many times. We can find pale yellow forms of many red and purple russula species too.

Created: 2013-01-24 02:56:24 EST (-0500)
Last modified: 2013-01-24 02:59:56 EST (-0500)
Viewed: 82 times, last viewed: 2017-11-04 16:33:21 EDT (-0400)
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