Lichen: Ochrolechia or Pertusaria - Obsession nr. 3

The lichens that I have already posted about, have been foliose, but now it's time for a crustose lichen.  Those are the ones that are like stains on rocks.  This type is quite abundant on rocks in the wood where I walk the dogs.

I am not sure if it's an Ochrolechia or a Pertusaria.  It is probably either lactea or corallina.  The former is a creamy or gray colour and has a pimply surface and can grow to about 15 cm, the latter is very white and without the bumps and gets even bigger, to 20 cm.  I'm not the only one who is confused, P. lactea is sometimes also called Ochrolechia lactea, so if biologists are confused...

But anyway I'm pretty sure that both O. (or P.) lactea and O. (or P.) corallina both grow on the rocks because there definitely are lichens that are more white and others that are more gray or cream.  I collected tiny amounts of the cream or gray ones and still have the white ones to explore.  Oh, there is so much to do and so little time!  But, on the bright side, I have something to look forward to.

It is pretty amazing that a colourless body of a crusty something can produce colour, but it can.  This lichen gave me the most beautiful sunny yellow on wool when simmered.  I first dyed a small amount of Icelandic wool and as it is very white I got this beautiful yellow.  The Alpaca wool that I'm using for the lichen dyes now are much darker in colour, so that the colours are more muted.

After I had used the lichen to dye in water I put the same lichen into an ammonia solution and it turned a kind of red colour with a hint of brown to it.  I shook the jar every day faithfully for over 3 months, sometimes thinking it was on the verge of turning purple, but I gave up in the end and dyed with it.

It is a lovely earthy pink.  I also dyed another skein in the exhaust bath, which gave a lighter shade.  I was very happy with that and expected great things from it in a soap.  But of course you never get what you expect in this natural colour business.

In preparation for the glorious pink I expected I scented the soap with Geranium as well as the Vetiver and put some hibiscus on top.  But the colour never showed up.  Just a slight blush of a tint in spite of the strongly coloured water.

It is so amazing to me that it is possible to get two such different colours from the same material.  How can one not be fascinated by these unpredictable things?