I love the drama of this shot which benefits greatly from the interesting sky in the background. I shot it against the sun so the tree would be silhouetted and just upped the contrast a little in Lightroom.
According to the DVD "The Art of Black and White" which I bought recently and have really enjoyed, there are four elements, at least one which should be present when taking photographs for black and white. They are line, shape, texture and form. I think this fits into the shape category whereas my post yesterday fits firmly in the line category.