Wall barley sprouts up all over the place, often growing in the most inhospitable of places. When the sun in low in the sky and shining through it, though, it can be beautiful.
Its Latin name is Hordeum murinum. Murinum does not mean wall, as I first thought, but mouse, which lends wall barley its American name of mouse barley.
Graphite pencil on paper. Overall size 29.7cm square. Drawing 13cm square.