At the bottom of the article, it says:

> From When Trees Testify: Science, Wisdom, History, and America’s Black Botanical Legacy by Beronda L. Montgomery. Copyright © 2026. Available from Henry Holt and Co., an imprint of Macmillan

Usually this means that the article is actually a book excerpt (often the first chapter of the book), and in this case we can find online the book's table of contents:

    Preface
    Introduction: Life as Testimony
    1. Pecan Trees and the Roots of Stolen Botanical Knowledge
    2. Sycamore Trees as a Path to Freedom
    3. The Secret Lives of Willow Trees
    4. Poplar Trees Bear Strange Fruit
    5. The Sweeping Promise of Mulberry
    6. A Haven for Community in Historic Oak Trees
    7. Cotton Shrubs and Seeds of Subversion
    8. The Gift of Apple Trees
    Conclusion: Black Botanical Legacy Reclaimed

Usually the first chapter is self-contained, but in this case possibly there was some context about “Antoine’s innovation” in the Introduction that precedes the first chapter.