[ukbotany] re white marsh thistles

updated sun 24 jun 07

Mike Lush on fri 15 jun 07

I've seen it in Exmoor where populations contain as many white flowers
as you're suggesting - certainly around 30% white.

Mike.

Richard Collingridge wrote:
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ryenats on sun 24 jun 07

Interesting - it rather looks as if the further south you go the more
white ones - but why? And do pollinating insects go from white to
white and purple to purple? They do seem to when I have the time to
sit and watch; if this is the case then I suppose they may be on the
road to becoming separate spp? And maybe that is why there are so few
intermediates. Just a thought.

Gill

--- In UKBotany@yahoogroups.com, Mike Lu=
sh wrote:

> I've seen it in Exmoor where populations contain as many white
flowers
some
> have more.

> I've not seen as high a proportion as you've found -- the most
I've
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