The elm cultivar Ulmus 'Hertfordensis Angustifolia' was mentioned (as Ulmus campestris hertfordensis angustifolia) by Boulger in Gardener's Chronicle II. 12: 298 1879, but without description.
The elm cultivar Ulmus 'Hertfordensis Angustifolia' was mentioned (as Ulmus campestris hertfordensis angustifolia) by Boulger in Gardener's Chronicle II. 12: 298 1879, but without description. (en)
The elm cultivar Ulmus 'Hertfordensis Angustifolia' was mentioned (as Ulmus campestris hertfordensis angustifolia) by Boulger in Gardener's Chronicle II. 12: 298 1879, but without description. (en)