Ulmus minor 'Propendens' (English Wikipedia)

"Herbarium specimen - WAG.1853107". Botany catalogues. Naturalis Biodiversity Center. Long shoots; sheet described as U. campestris suberosa pendula = U. carpinifolia Gled. 'Propendens' Schneid. (Rehd.); "Herbarium specimen - WAG.1853105". Botany catalogues. Naturalis Biodiversity Center. Long shoots; sheet described as U. campestris suberosa pendula = U. carpinifolia Gled. 'Propendens' Schneid. (Rehd.); "Herbarium specimen - E00824845". Herbarium Catalogue. Royal Botanic Garden Edinburgh. Sheet described as U. campestris suberosa pendula (RBGE specimen, 1902); "Herbarium specimen - E00824846". Herbarium Catalogue. Royal Botanic Garden Edinburgh. Sheet described as U. campestris suberosa pendula (RBGE specimen, 1902); "Herbarium specimen - E00824844". Herbarium Catalogue. Royal Botanic Garden Edinburgh. Sheet described as U. campestris suberosa pendula (RBGE specimen, 1902); "Herbarium specimen - L.1586949". Botany catalogues. Naturalis Biodiversity Center. Short shoots; sheet described as U. carpinifolia Gled. 'Propendens' Schneid., synonym U. campestris suberosa propendens (Dahlen Hortus specimen, 1925); "Herbarium specimen - L.1586965". Botany catalogues. Naturalis Biodiversity Center. Sheet described as U. carpinifolia Gled. 'Propendens' Schneid., "formerly called U. campestris suberosa pendula lombartsii" (Boskoop specimen, 1934)

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Centrum voor Botanische Verrijking vzw: Voorraadlijst, accessdate: November 2, 2016

"Herbarium specimen - WAG.1853107". Botany catalogues. Naturalis Biodiversity Center. Long shoots; sheet described as U. campestris suberosa pendula = U. carpinifolia Gled. 'Propendens' Schneid. (Rehd.); "Herbarium specimen - WAG.1853105". Botany catalogues. Naturalis Biodiversity Center. Long shoots; sheet described as U. campestris suberosa pendula = U. carpinifolia Gled. 'Propendens' Schneid. (Rehd.); "Herbarium specimen - E00824845". Herbarium Catalogue. Royal Botanic Garden Edinburgh. Sheet described as U. campestris suberosa pendula (RBGE specimen, 1902); "Herbarium specimen - E00824846". Herbarium Catalogue. Royal Botanic Garden Edinburgh. Sheet described as U. campestris suberosa pendula (RBGE specimen, 1902); "Herbarium specimen - E00824844". Herbarium Catalogue. Royal Botanic Garden Edinburgh. Sheet described as U. campestris suberosa pendula (RBGE specimen, 1902); "Herbarium specimen - L.1586949". Botany catalogues. Naturalis Biodiversity Center. Short shoots; sheet described as U. carpinifolia Gled. 'Propendens' Schneid., synonym U. campestris suberosa propendens (Dahlen Hortus specimen, 1925); "Herbarium specimen - L.1586965". Botany catalogues. Naturalis Biodiversity Center. Sheet described as U. carpinifolia Gled. 'Propendens' Schneid., "formerly called U. campestris suberosa pendula lombartsii" (Boskoop specimen, 1934)

"List of Living Accessions: Ulmus". Royal Botanic Garden Edinburgh. Retrieved 21 September 2016.

Katalog (PDF). Vol. 108. Berlin, Germany: L. Späth Baumschulenweg. 1902–1903. pp. 132–133.
Accessions book. Royal Botanic Garden Edinburgh. 1902. pp. 45, 47.
Ryston Hall Arboretum catalogue. c. 1920. pp. 13–14.

F. J., Fontaine (1968). "Ulmus". Dendroflora. 5: 37–55. Retrieved 30 August 2017.