The American elm cultivar Ulmus americana 'Hines' was listed in the accessions of the Morden Arboretum http://dir.gardennet.com/directory/mrc/ (1970), apparently sourced from the Hines Nursery, Souris, Manitoba in 1940. The tree was not recognized as a valid cultivar by some authorities.
Not available.
'Hines' was susceptible to Dutch elm disease.
No specimens are known to survive; the two specimens at Morden had both died from Dutch elm disease by 2001.
Named for the Hines Nursery (now defunct), which raised it.