The Wych Elm cultivar Ulmus glabra 'Grandidentata', listed as U. glabra var. grandidentata (Moss),Krüssman, Gerd, Manual of Cultivated Broad-Leaved Trees & Shrubs (1984 vol. 3) may have been the tree first described by Dumortier in Florula Belgica, 25, 1827, as U. corylacea var. grandidentataFlorula Belgica, 25, 1827, Florula Belgica, 25, 1827. (:large-toothed hazel-like elm), in cultivation before 1830. Green thought it a synonym of 'Cornuta'. 'Grandidentata' may be synonymous with U. glabra 'Corylifolia' (:hazel-leaved elm), which Green thought another synonym of 'Cornuta'.
Description The name implies distinctively large marginal teeth, perhaps differing from the 'horns' of 'Cornuta'.
Pests and diseases 'Grandidenta' is susceptible to Dutch Elm disease.
Cultivation No authoritatively identified specimens are known to survive.
Putative specimens A mature open-grown large-toothed U. glabra cultivar, matching a 1903 herbarium leaf-specimen mislabelled U. montana cucullata, Sheet described as U. montana cucullata [error for 'cornuta' (?)] (1903) 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.Google Maps: 260 Niddrie Mains Rd - Google Maps (July 2012), accessdate: September 4, 2016
Synonymy
Ulmus corylacea var. grandidentata: Dumortier, Florula Belgica, 25, 1827 ? Ulmus Montana (: glabra) var. corylifolia: Zapalowicz, Conspectus Florae Galiciae Criticus 2: 98, 1908 ?
References