I have a box of 4×6 plant identification cards that was sold under the name Nature’s Medicine Chest. The set contains approximately 250 cards with many color photos. Each card has photos on one side, a description of the plant, and the use on opposite side. They were published in the mid 1970,s by LeAtra Moulton.
The box I have contains sets 1-6 which cover medicinal and edible plants and their uses. Additional cards cover various illness and provide information on the herbs used to treat them and how to gather and prepare the herbs
I have used the cards for many years to help identify plants and have found them to be of great benefit. Unfortunately, they are no longer in print, but copies can be found for sale on the internet. If you can find a copy they will help you identify the plants in your area. They are primarily designed for use in the U.S. or Canada.