A Taxonomic Revision of Lamium (Lamiaceae). 1989. Thesis. (Leiden Botanical Series, vol. 11). illustrated. 199 p. gr8vo. Paper bd.

Contents (partly): General Chapter (Introduction/ Taxonomic history ofLamium/ Concept of Lamium in this revision/ Morphological characters ofLamium/ Chromosome numbers/ Chemical characters/ Geography and ecology/Criteria for delimitation of subgenera, sections, species and infraspecific taxa/ Hybridization/ An intuitive phylogeneticreconstruction/ References/ Acknowledgements)/ Taxonomic Chapter(Introduction/ Lamium/ Key to all taxa except hybrids/ Description ofall taxa except hybrids/ Hybrids/ Species et varietates dubiae/ Speciesexcludendae)/ List of Collections/ Index of Taxonomic Names/ Summary. -The present study deals with the systematics and taxonomy of the genusLamium (Lamiaceae). The taxonomic revision is mainly based on the studyof herbarium collections, and to a smaller degree on field observationsand abstracts from literature. The research was done at theRijksherbarium, Leyden, while many other Herbaria were shortly visited.