Wall Cotoneaster	Status LU: established. 1st record: LU & ITW 1949.
	Fächer-Zwergmëspel	Status Eur.: established. 1st record: FR 1860s-1870s.
	Cotonéaster horizontal	RA: ISEIA: C1. Harmonia+: 0,34
	Fächer-Zwergmispel	Wikipedia: | Wikispecies: | CABI
	Vlakke dwergmispel	Back to the list of neophytes

Report the species

→ Report Cotoneaster horizontalis to the National Museum of Natural History.

Brief description

Cotoneaster horizontalis Decne. is a small shrub that thrives in man-made habitats such as walls, railway embankments or sand quarries. It can form large spontaneous and self-sustaining populations in dunes, rock outcrops and a wide range of calcicolous grassland communities. The plant is easily dispersed by birds (Branquart et al. 2010).

Status and distribution in Luxembourg

Cotoneaster horizontalis Decne. was first documented on 6 August 1949 by François Léon Lefort (1917-1975) in Kelsbach in the Moselle valley between Grevenmacher and Machtum (Specimen № 21984 MNHNL 2000-).

The 15 occurrences in the MNHNL-mdata online portal hardly reflect the real distribution of the species (MNHNL, iNaturalist & GBIF 2019). The species seems constrained to urban areas. Commonly used as an ornamental plant, its distribution in the wild outside of urban areas is expected to increase in the future.

This melliferous species native to western China is grown for ornamental purposes in parks, gardens and roadsides. It is the most invasive exotic Cotoneaster species in sub-natural or semi-natural environments like calcicolous dry grassland, etc. (Lambinon & Verloove, 2012: 372).

Risk assessment

ISEIA protocol

C1 (1+2+2+2) (Ries et al. 2013: 18).

Harmonia+ protocol

Overall risk score 0,34 = (Overall Invasion score 0,68 x Overall Impact score 0,50) (Ries et al. 2020).

Worldwide distribution

Bibliography

• Branquart, E., S. Vanderhoeven, W. Van Landuyt, F. Van Rossum, F. Verloove, 2010. Harmonia database: Cotoneaster horizontalis Decne. Harmonia version 1.2, Belgian Forum on Invasive Species. URL: http://ias.biodiversity.be [accessed on 2019-10-09]
• CABI, 2019. Cotoneaster horizontalis. In: Invasive Species Compendium. Wallingford, UK: CAB International. URL: www.cabi.org/isc [accessed 2020-02-28]
• Lambinon J. & F. Verloove, 2012. Nouvelle flore de la Belgique, du grand-duché de Luxembourg, du Nord de la France et des régions voisines. Sixième édition. Avec la collaboration de L. Delvosalle, B. Toussaint, D. Geerinck, I. Hoste, F. Van Rossum, B. Cornier, R. Schumacker, A. Vanderpoorten et H. Vannerom. Jardin botanique national de Belgique, Meise. CXXXIX + 1195 pp. ISBN : 9789072619884.
• MNHNL, 2000-. Cotoneaster horizontalis Decne. in Recorder-Lux, database on the natural heritage of the Grand Duchy of Luxembourg. Musée national d’histoire naturelle, Luxembourg. URL: https://mdata.mnhn.lu [Accessed 2019-09-05]
• MNHNL, iNaturalist & GBIF, 2019. Cotoneaster horizontalis Decne. in MNHNL-mdata, online portal combining species observation from Recorder-Lux, iNaturalist and GBIF. National Museum of Natural History, Luxembourg. URL: https://mdata.mnhn.lu [Accessed 2019-09-06]
• Ries, C. & Y. Krippel, 2021. First records of 56 invasive alien vascular plants in Luxembourg. Bulletin de la Société des naturalistes luxembourgeois 123: 115-127. [PDF 241 KB]
• Ries, C., Y. Krippel & M. Pfeiffenschneider, 2020. Risk assessment after the Harmonia+ protocol of invasive alien vascular plant species in Luxembourg. Bull. Soc. Nat. luxemb. 122: 197-205. [PDF 132 KB]
• Ries, C., Y. Krippel, M. Pfeiffenschneider & S. Schneider, 2013. Environmental impact assessment and black, watch and alert list classification after the ISEIA Protocol of non-native vascular plant species in Luxembourg. Bull. Soc. Nat. luxemb. 114: 15-21. [PDF 652 KB]