(Anonymous) Orchid. Watercolor. Circa 1940. $250.00

"Plate 839. Cypripedium Robinsonii. Orchaceae. Cypripedium Robinsonii. Paphiopeclalum Robinsonii."

Incredibly finely finished and minutely detailed watercolor on paper.  Accompanied by scientific text meticulously recorded by hand. 

10 x 7 ¼ inches, sheet.
Ink and watercolor on paper.
Excellent condition with right edge perforated by stapled binding.