Ulmus glabra 'Grandidentata'

The Wych Elm cultivar Ulmus glabra 'Grandidentata', listed as U. glabra var. grandidentata (Moss),[1] may have been the tree first described by Dumortier in Florula Belgica, 25, 1827, as U. corylacea var. grandidentata[2] (:large-toothed hazel-like elm), in cultivation before 1830. Green thought it a synonym of 'Cornuta'.[3] 'Grandidentata' may be synonymous with U. glabra 'Corylifolia' (:hazel-leaved elm), which Green thought another synonym of 'Cornuta'.

Ulmus glabra 'Grandidentata'
SpeciesUlmus glabra
Cultivar'Grandidentata'
OriginEurope

Description

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The name implies distinctively large marginal teeth, perhaps differing from the 'horns' of 'Cornuta'.

Pests and diseases

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'Grandidenta' is susceptible to Dutch Elm disease.

Cultivation

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No authoritatively identified specimens are known to survive.

Putative specimens

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A mature open-grown large-toothed U. glabra cultivar, matching a 1903 herbarium leaf-specimen mislabelled U. montana cucullata,[4] stands in Niddrie Mains Road, Edinburgh (grafted at ground level; girth 1.4 m) (2016). The large teeth are present along the whole leaf-margin of short shoot-leaves as well as long ('Cornuta'). Though 'Cornuta'-like teeth may occur near the apex, they are rare, and do not resemble the slender 'horns' that usually appear in 'Cornuta' photographs. The tree is narrow-pyramidal, with upswept branches like a Huntingdon Elm.[5]

Synonymy

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References

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  1. ^ Krüssman, Gerd, Manual of Cultivated Broad-Leaved Trees & Shrubs (1984 vol. 3)
  2. ^ Florula Belgica, 25, 1827, Florula Belgica, 25, 1827.
  3. ^ Green, Peter Shaw (1964). "Registration of cultivar names in Ulmus". Arnoldia. 24 (6–8). Arnold Arboretum, Harvard University: 41–80. Retrieved 16 February 2017.
  4. ^ "Herbarium specimen - E00824769". Herbarium Catalogue. Royal Botanic Garden Edinburgh. Sheet described as U. montana cucullata [error for 'cornuta' (?)] (1903)
  5. ^ Google Maps: 260 Niddrie Mains Rd - Google Maps (July 2012), accessdate: September 4, 2016