Home Online catalogues True to Nature. Open-air Painting 1780-1870 13. Anonymous French(?), first half of the 19th century Study of a Tree In this anonymous tree study, delicately rendered foliage covers almost the entire surface of the paper, giving it a somewhat decorative feel. It appears to be a cropped view of the top of a tree, painted from a high vantage point. The artist could have sketched it while perched on a branch.