This work investigates the botanical diversity of the Temiscouata region. Henry Marc Ami, a geologist and naturalist, compiled this study based on his extensive fieldwork and existing botanical records.

The Authority Perspective: This book is recognized as a significant early contribution to the botanical survey of Quebec. Its detailed cataloging of regional flora provides valuable historical data for botanists and ecologists. The work is considered a foundational text for understanding the natural history of the Temiscouata area.