Pinned with the same pin inside his coat or cloak or whatever it is brooding Wardens have in the way of summer outerwear:

Mr. Ellis,

Despite my ill advised tenure as an assistant in the Gallows gardens, I know nothing whatsoever on the subject and so trust your instincts entirely.

That said, recall from a few weeks ago our trip to investigate that rift which turned out to be a very narrow cave with an exceptionally angry family of badgers in residence. There was a particular little yellow flower growing near there which smelled similar to something in Kalvad which I would not find unpleasant. I believe it looked something like this.

Your Friend,
W.A. Poppell

A rough illustration of the rudbekia follows; she is a draftsman and not an artist, but it isn't an altogether impossible to decipher drawing.