2008.04.04: Austria, Vienna XXII. district, 155 m AMSL, planted in avenue (by national park foresters).Flowering in april/may.Quite rare.German names: Wild-Apfel, Holzapfel, Glattblttriger Apfel.
Herbarium Blackwellianum emendatum et auctum, id est, Elisabethae Blackwell collectio stirpium.Norimbergae : Typis Io. Iosephi Fleischmanni, 1750-1773..biodiversitylibrary.org/page/291499