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Public botanical gardens and arboreta are living museums and as such, their core missions
include the collection and display of herbaceous and woody plants from their local region or
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
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
In a pollen supplementation experiment, fruit or seed production by flowers exposed to natural pollination is compared to that following hand pollination either by pollen supplementation (i.e.