The variety is a traditional type of butterhead lettuce mentioned in seed catalogs from the first half of the 20th century. The plant is characterized by the formation of a very large head and the presence of black seeds.
The variety possesses the property of slow transition to bolting, which allows it to be grown with a fairly dense planting scheme. In historical sources, it is classified as a heading form of lettuce and belongs to varieties that are in the public domain.
Sources2
Loading…
Countries of admission
1 jurisdiction
Green indicates countries where the variety is listed in the national catalogue and its seeds are authorized for sale. Expired registrations are marked separately: the variety was previously admitted, but sale is no longer permitted.
The directory replicates the primary source. If an entry differs from the official publication, please specify the discrepancy and provide a link if possible. Corrections are added to the moderation queue.
This is a directory, not an official registry: data is based on public disclosures and may have changed.
More about sources