Plant families :
Plant families : a plea for an international sequence /
by Alfred Gundersen.
- Contributions (Brooklyn Botanic Garden) ; no. 23. .
- Contributions (Brooklyn Botanic Garden) ; no. 23. .
Reprinted from: New phytologist, vol. 19, 1920, pp. 264-271.
Plants--Classification.
Reprinted from: New phytologist, vol. 19, 1920, pp. 264-271.
Plants--Classification.