Pack of five cards, including one of each image, envelopes included. They are printed on 5x7 folding fine-art card stock. The interior of the cards are blank. Images are not interchangeable. Species include: Showy Lady's Slipper, Calypso Orchid, Stemless Lady's Slipper, Ram's Head Lady's Slipper, and the Greater Yellow Lady's Slipper.