12 cards each with a different watercolor image of keystone species, all native to North America. 
 
These lovely sets of cards are made by Daisy Hebb, Green Blossom Painting, out of Cambridge, MA.
 
From Daisy: "12 Original paintings of keystone species and keystone pollinator plants selected by Doug Tallamy. Doug paired each keystone species with one of the dozens or even hundreds of different butterfly/moths and their caterpillars which utilize these keystone species. Watercolors and design by Daisy Hebb. While still being primarily a work of humble art, each keystone is labeled with its genera and lepidoptera (butterflies & moths) are labeled with their common and scientific names...
These cards make beautiful gifts with a ray of blessings and color, fun for any budding naturalist, gardener, or dear friend. The care put into them is palpable and sure to please.
 
Hand-made in the USA
Photos are all from Daisy.
Shipped by Green Blossom Painting, Cambridge, MA.