细节
Pieter Holsteyn II (Haarlem 1614-1673)
Greek Valerian, also called Jacob's Ladder (Valeriana graeca)
inscribed 'Valeriana graeca.'
black chalk, watercolour, traces of pen and brown ink framing lines, watermark device surmounted by crown with letters WK
11¼ x 7½ in. (28.5 x 19 cm.)