5 Pages in Charles Darwin's Library associated with "flora - Vallisneria spiralis"

Descriptive and physiological botany
By: Henslow, J. S. (John Stevens),
Publication info: London, Longman, Orme, Brown, Green & Longman, 1837
Pages: Page 263 Page 264
Lake Superior: its character, vegetation, and animals, compared with those of other similar regions
By: Agassiz, Louis,
Publication info: Boston, Gould, Kendall & Lincoln, 1850
Pages: Page 175 Page 176 Page 177