Collection location: Bassetts, Sierra Co., California, USA [Click for map]
The date is only accurate to the month.
Found during a spring Sierra mushroom workshop taught by Dr. Dennis Dejardin at the SFSU field station near Yuba Pass.
I’m not completely certain of this id, but this species is known from this area during the time of year this was taken.
and apparently the hammer has fallen (or rather fell in 2003). Else turned me on to the following paper:
Notes on Clitocybe s. lato (Agaricales) by Harri Harmaja. Apparently the big problem with Clitocybe has been confusion over the type. Some (including Singer) have argued that it is Clitocybe gibba, but the modern consensus among Clitocybiologists (as Arora might say) appears to be Clitocybe nebularis. This conclusion has several interesting side effects. First, Clitocybe gibba (and kin) are no longer Clitocybes. As a consequence Harmaja created Infundibulicybe. Another side effect is that Lepista goes in the dust bin since this group is part of the successful coup and once again the Blewit becomes a Clitocybe. Another fun segregate genus is Ampulloclitocybe which includes A. clavipes (formerly Clitocybe clavipes). I understand from Else that Denise Gregory’s forth coming work on California Clitocybes is expected to follow this interpretation of Clitocybe. This interpretation is also used in “Major clades of Agaricales: a multilocus phylogenetic overview” Mycologia, 98(6), 2006, pp. 982–995 by P. Brandon Matheny and pretty much everyone else :-).