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

Descriptive and physiological botany.
By: Henslow, 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
On the flora of Australia.
By: Hooker, Joseph Dalton,
Publication info: London :Lovell Reeve,1859.
Pages: Page xcvi