Ulmus Wallichiana - Hybrid Cultivars

Hybrid Cultivars

U. wallichiana was crossed with the Exeter Elm U. glabra 'Exoniensis' in the Netherlands in 1938, from which progeny was selected clone '202', destined to become a fundamental component of the Dutch elm breeding programme in the 1960s and 1970s. Selfed or hybridized with U. minor or earlier Dutch hybrids, its progeny include 'Clusius', 'Dodoens', 'Lobel', and 'Plantyn'. 'Plantyn' was in turn to play a vital part in the third generation of Dutch hybrids; two selfed specimens were selected and released as 'Columella' and, much later, 'Wanoux' (Vada), while 'Plantyn' itself was crossed with U. 'Bea Schwarz' to create 'Nanguen' (Lutèce), arguably the most successful Dutch elm cultivar released to date. 'Plantyn' was also selected for use in the Italian elm breeding programme that started in the 1970s, and was crossed with varieties of the Siberian Elm U. pumila to create a number of hardy trees renowned for their rapid upright growth: 'Arno', 'Plinio', and 'San Zanobi'.