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are OK for griseoalba/costifera – but the dark colour..? I wonder if griseoalba can be this dark. It feels like the best candidate though. I can’t find any other possible species in the vicinity.
I’m thinking the ribs on these aren’t branched or rounded enough, and end too sharply, for H. costifera/griseoalba. They’re dark grey.
are both known species of Eastern North America, is there any similar species in the west? BTW, they are grey, don’t they?
Created: 2013-03-28 06:32:19 IST (+0530)
Last modified: 2013-03-28 06:32:22 IST (+0530)
Viewed: 52 times, last viewed: 2017-06-16 06:28:35 IST (+0530)