1. Focusing on Dynamics: When an Exception Becomes a Rule;Rules and Exceptions in Biology: from Fundamental Concepts to Applications;2024
2. Other Orchideae;The Pollination Biology of North American Orchids: Volume 1;2011-08-18
3. Tribe Neottieae;The Pollination Biology of North American Orchids: Volume 2;2011-08-18
4. Natural History of Flowers and Gravity;Biological Sciences in Space;2004
5. Genetic variation in three species of Epipactis (Orchidaceae): geographic scale and evolutionary inferences;Biological Journal of the Linnean Society;2000-03