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The Hamamelidaceae has genera with named cultivars, but only one cultivar registration authority for the genus Hamamelis.
This is an example from Denver Botanic Gardens of a Material Transfer Agreement:
Living Collections Access and Distribution Form.
Oaks are critical to the health and function of forest and shrubland habitats in the United States, but many native oaks are threatened with extinction in the wild.
The U.S. national heritage of approximately one billion biodiversity specimens, once
digitized, can be linked to emerging digital data sources to form an information-rich network
An enterprise GIS data model was developed for use in public gardens, which includes botanical gardens, arboreta, and zoos.
Studies in plant phenology have provided some of the best evidence for large-scale responses to recent climate change.
Herbarium specimens are increasingly recognized as an important resource for conservation
Major international herbaria, natural history museums and universities have recently begun to digitise their collections to facilitate studies and improve access to collections.
1. There is an urgent need for large-scale botanical data to improve our understanding
of community assembly, coexistence, biogeography, evolution, and many other
The University of British Columbia Botanical Garden compiled a spreadsheet of Collectors' references and expedition abbreviations with associated information that were gathered from various sources (mostly online resources). The spreadsheet is shared th