|Billard’s bridewort||ISEIA: B1 – Watch List|
|Spirée de billard||Wikipedia:|
|Billardspirea||Back to the list of neophytes|
Importance and distribution in Luxembourg
The first documented occurrence of Spiraea ×billardii in Luxembourg dates from 2011. It was found by Xavier Mestdagh on 27th June 2011 in the municipality of Parc Hosingen. Only five observations are indicated in the Recorder database.
The species is a sterile horticultural hybrid between S. alba et S. douglasii. It is a fast-growing rhizomatous species, propagating clonally, and mainly growing in ruderal areas and in riparian habitats. Just as other Spiraea species, it may easily form dense monospecific thickets smothering the native vegetation (Source: http://ias.biodiversity.be/species/show/142).
ISEIA protocol: B1 (2+2+3+2) = Watch List, reassessed on 24 January 2019 by C. Ries and M. Pfeiffenschneider. Original assessment: B0 (2+2+3+2) = Alert List (Ries et al. 2013: 19).
Bibliography concerning Luxembourg
- 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]
Suggested citation of this webpage
Ries, C. & M. Pfeiffenschneider (Eds.), 2019. Spiraea ×billardii Hérincq. In: neobiota.lu - Invasive Alien Species in Luxembourg. URL: https://neobiota.lu/spiraea-x-billardii/ [21.08.2019].