Ulmus minor 'Viminalis Gracilis'
| Ulmus minor 'Viminalis Gracilis' | |
|---|---|
| Species | Ulmus minor |
| Cultivar | 'Gracilis' |
The Field Elm cultivar Ulmus minor 'Viminalis Gracilis' [:'slender'] is a form of U. minor 'Viminalis'. Cultivars listed as Ulmus gracilis Hort. by Kirchner (1864),[1] and as U. scabra viminalis gracilis Hort. by Dieck (1885),[2] were considered by Green to be forms of Melville's U. × viminalis.[3] A 1929 herbarium specimen held at the Hortus Botanicus Leiden is labelled U. campestris var. viminalis f. gracilis, implying a cultivar that differed from the 'type' tree.[4]
Description[]
The epithet 'gracilis' usually refers to the slender habit of a cultivar. Dippel (1892), who treated the 'Viminalis' group as a form of U. montana (sometimes used for hybrids in his day), described viminalis f. gracilis as a small to medium-sized tree, with even finer, more hanging branches than type-'Viminalis', and smaller, narrower, almost slit-edged leaves.[5] The Leiden herbarium specimen shows a leaf apparently distinct from that of the type, with narrower, almost hair-like, scarcely double teeth (see 'External links' below).
Pests and diseases[]
Trees of the U. minor 'Viminalis' group are very susceptible to Dutch elm disease.
Cultivation[]
No specimens are known to survive.
References[]
- ^ Petzold; Kirchner (1864). Arboretum Muscaviense. p. 551.
- ^ Dieck, Zoschen, Germany, (1885) 'Haupt-catalog der Obst- und gehölzbaumschulen des ritterguts Zöschen bei Merseburg, p. 82
- ^ Green, Peter Shaw (1964). "Registration of cultivar names in Ulmus". Arnoldia. Arnold Arboretum, Harvard University. 24 (6–8): 41–80. Retrieved 16 February 2017.
- ^ Leiden 'Viminalis Gracilis', bioportal.naturalis.nl [1]
- ^ Dippel, Leopold, Handbuch der Laubholzkunde, Pt.2 (Berlin, 1892), p.30
External links[]
- "Herbarium specimen - WAG.1853217". Botany catalogues. Naturalis Biodiversity Center. Sheet labelled U. campestris var. viminalis f. gracilis (Leiden specimen)
- "Herbarium specimen - L.1582431". Botany catalogues. Naturalis Biodiversity Center. Sheet labelled U. viminalis gracilis (Leiden specimen)
- "Herbarium specimen - L.1582075". Botany catalogues. Naturalis Biodiversity Center. Sheet labelled U. montana Sm. var. viminalis Koch f. gracilis (1901)
- "Herbarium specimen - E00824784". Herbarium Catalogue. Royal Botanic Garden Edinburgh. Sheet labelled U. montana Sm. var. viminalis f. gracilis = U. procera f. viminalis [ = U. minor 'Viminalis ]
- Field elm cultivar
- Ulmus