''Ulmus'' 'Monstrosa'

Ulmus
Cultivar 'Monstrosa'
Origin France

The elm cultivar Ulmus 'Monstrosa' is believed to have originated in France, where it was listed without description as a form of Field Elm, Ulmus campestris var. monstrosa.[1] Krüssman included it in his manual as an Ulmus glabra cultivar,[2] but the plant's long, slender 2 cm petiole[1] (see herbarium specimens below) is not a feature of U. glabra, and is even less likely in a shrub form of this tree.

The Späth nursery of Berlin marketed Ulmus montana monstrosa in the late 19th and early 20th century, listing it separately from Ulmus montana nana,[3] sometimes referred to as Ulmus scabra [:glabra Huds.] f. nana monstrosa Schneid.[4]

Description

'Monstrosa' is a compact shrub, with branchlets often fasciated, and leaves 5–8 cm long, partly pitcher-shaped at the base, and on slender stalks < 25 mm long.[1]

Cultivation

No specimens are known to survive. U. montana monstrosa was introduced to the Dominion Arboretum, Ottawa, Canada, probably from Späth, in 1899.[5] A specimen obtained from Späth as U. montana monstrosa and planted in 1916, stood in the Ryston Hall arboretum, Norfolk,[6] in the early 20th century.[7]

The shrub elm sold in the Netherlands as 'Monstrosa' appears from photographs to be the cultivar 'Nana'.[8] 'Nana Monstrosa' was an old synonym of 'Monstrosa'.[4]

Synonymy

  • Ulmus campestris (: glabra) var. monstrosa: Lavallée, Arboretum Segrezianum 235, 1877, and Hartwig, Illustrirtes Gehölzbuch ed. 2, 294, 1892.
  • Ulmus scabra (: glabra) var. monstrosa Hort.; Krüssmann, Handbuch der Laubgehölze 2: 536, 1962, as a cultivar.
  • Ulmus scabra (:glabra) f. nana monstrosa Schneid.[4]


References

  1. 1 2 3 Green, Peter Shaw (1964). "Registration of cultivar names in Ulmus". Arnoldia. Arnold Arboretum, Harvard University. 24 (6–8): 41–80. Retrieved 16 February 2017.
  2. ↑ Johann Gerd Krüssmann, Handbuch der Laubgehölze 2: 536, 1962
  3. ↑ Katalog (PDF). 108. Berlin, Germany: L. Späth Baumschulenweg. 1902–1903. pp. 132–133.
  4. 1 2 3 Krüssman, Gerd, Manual of Cultivated Broad-Leaved Trees & Shrubs (1984 vol. 3)
  5. ↑ Saunders, William; Macoun, William Tyrrell (1899). Catalogue of the trees and shrubs in the arboretum and botanic gardens at the central experimental farm (2 ed.). pp. 74–75.
  6. ↑ rystonhall.co.uk/
  7. ↑ Ryston Hall Arboretum catalogue. c. 1920. pp. 13–14.
  8. ↑ Photographs of plant sold as 'Monstrosa' in Holland: Herman Geers Dwarf & Miniature Plants,
  • "Herbarium specimen - L.1587163". Botany catalogues. Naturalis Biodiversity Center. Arnold Arboretum specimen, 1930.
  • "Herbarium specimen - WAG.1852722". Botany catalogues. Naturalis Biodiversity Center.
  • "Herbarium specimen - WAG.1852723". Botany catalogues. Naturalis Biodiversity Center.
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