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The Hamamelidaceae has genera with named cultivars, but only one cultivar registration authority for the genus Hamamelis.
This is a list of Online Resources for Nomenclatural Verification assembled by the Plant Nomenclature & Taxonomy Community.
This Online Herbaria Guide was assembled by the Plant Nomenclature & Taxonomy Community. It provides a list of herbaria for research purposes.
Ulmus americana (American elm) was an important urban tree in North America prior to the introduction of the Dutch elm disease pathogen in 1930. Subsequently, urban and community forests were devastated by the loss of large canopies.
Access and benefit-sharing (ABS) refers to the way in which genetic resources
may be accessed, and how the benefits that result from their use are shared
between the people or countries using the resources (users) and the people or
The Standards of Excellence in Plant Collections Management developed by the Plant Co
A companion Self-Assessment Tool is now available to help you evaluate your organization’s current level of collections management.
Botanic gardens are living museums, offering opportunities for conservation and research as well as education, experience, and enjoyment through their plant collections.
Extinctions of species and subspecific taxa in hotspots of biodiversity deserve special attention. After more than 40 years of major efforts, estimates of extinct plant taxa in California seem to be somewhat stabilized.
Although only a minority of plant species have a specific human use, many more play important roles in natural ecosystems and the services they provide, and rare species are more likely to have unusual traits that could be useful in the future.