The American Elm cultivar Ulmus americana 'Nigricans' Dieck was cloned from a selection made from seedlings raised by the Zöschener Baumschule, Zöschen, Germany, and listed by Georg Dieck with a brief description in Haupt-catalog der Obst- und gehölzbaumschulen des ritterguts Zöschen bei Merseburg, 1885.[1]
| Ulmus americana 'Nigricans' | |
|---|---|
| Species | Ulmus americana |
| Cultivar | 'Nigricans' |
| Origin | Zöschener Baumschule, Germany |
An 'American Black Elm', "a variety of Ulmus americana of more erect habit", was marketed by Trumbull and Beebe's nursery, San Francisco, in the 1890s, along with a batch of other European elm cultivars.[2]
Description edit
The tree was distinguished by its very dark green foliage. Occasionally listed as 'Nigrescens', it has caused confusion with a U. minor cultivar of that name.[3]
Cultivation edit
No specimens are known to survive.
Synonymy edit
- U. americana f. nigrescens Dieck: Schelle in Beissner et al. Handbuch der Laubholz-Benennung 87. 1903.
References edit
- ^ Dieck, G., Haupt-catalog der Obst- und gehölzbaumschulen des ritterguts Zöschen bei Merseburg (Zöschen 1885), p.80
- ^ 'Trumbull & Beebe's descriptive catalogue of fruit and ornamental trees', San Francisco, 1892; p.35
- ^ Green, Peter Shaw (1964). "Registration of cultivar names in Ulmus". Arnoldia. 24 (6–8). Arnold Arboretum, Harvard University: 41–80. Retrieved 16 February 2017.