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DT Herculis

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Thorny | 14:53 Mon 20th Apr 2009 | Quizzes & Puzzles
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31a A violet or red dye used as a source of litmus, obtained from lichen (6). Is the answer orchil or orcein, both fit?
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The consensus appears to be:

"Take your pick".

I picked Orchil.
I picked ORCHIL too :-))
If the link does not work, see my post timed at 11.55 today.
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Many thanks for your assistance. Sorry I didn't notice the previous discussion.

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