The Nature Notebook Series: Notes on Plants and Flowers

Originally published in the early 1900's, Anna Comstock intended that the pupil would use these notebooks, with their teacher- and alongside her Handbook of Nature Study, to create their very own field guides by observing local flora and fauna.
This book, Notes on Plants and Flowers, contains

How to Understand a Plant
How to understand a flower
along with multiple forms to fill in while in the field, to aid in the identification of plants and flowers.

Also available in this series:

Notes on Common Animals
Notes on Plants & Flowers
Notes on Composite Flowers
Notes on Fishes
Notes on Birds 1 & 2
Notes on Trees

Anna Comstock's most famous work, The Handbook of Nature Study, was written by many different authors, including James Needham and George Embody, both of which contributed to The Nature Notebook Series.