ISBNs beginnend mit 978-3-946583-xx-x

Materials to the Orchid Flora of Colombia

Vanishing Beauty: Native Costa Rican Orchids.

International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code).

Flora Albanica: Atlas.

Orchid genera and species in Guatemala

Monoraphid and Naviculoid diatoms from the Coastal Laurentian Great Lakes.

Wild Orchids of the Southwestern United States (Arizona, California, Colorado, Nevada, New Mexico, and Utah).

Rust Fungi of Israel.

Materials to the Orchid flora of Colombia. Volume 2: Spiranthoideae - Spirantheae.

A History of Orchids in South America.