Mimulus guttatus DC.

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English Monkeyflower Status LU: established. 1st record: LU & ITW 1998.
Lëtzebuergesch Getëppelt Mimekraut Status Eur.: established. 1st record: unkn.
Français Mimule tacheté RA: ISEIA: C1. Harmonia+: 0,16.
Deutsch Gelbe Gauklerblume Wikipedia: Wikipedia - English - Monkeyflower Wikipedia - Français - Mimule tacheté Wikipedia - Deutsch - Gelbe Gauklerblume Wikipedia - Nederlands - Gele maskerbloem | Wikispecies: Wikispecies - Mimulus guttatus | CABI
Nederlands Gele maskerbloem Back to the list of neophytes

Report the species

Report Mimulus guttatus to the National Museum of Natural History.

Brief description

Mimulus guttatus 5649Mimulus guttatus DC. (Syn.:  Erythranthe guttata (Fisch. DC.) G.L.Nesom) typically grows in disturbed areas around river banks and is rarely found in the adjacent marshes and wet meadows. This plant species colonises gaps within the established vegetation. It can form large patches where tree cover is low and vegetation is dominated by light-demanding, ruderal and small-sized plant species, especially in the upper reaches of streams (Baus et al. 2010).

Status and distribution in Luxembourg

Records of Mimulus guttatus DC. in Luxembourg. Data source: Recorder-Lux, iNaturalist & GBIF, 2024-06-25.

The western North American Mimulus guttatus DC. was first documented in Luxembourg by Gérard Schmid on 1998-09-01 near the mill on the right bank of the river Attert in the municipality of Useldange (Colling & Krippel 2001: 42).

In 2019, about 15 plants were discovered near Reimberg in the ruts left by the construction machines of a water pipeline (Krippel et al. 2020: 41).

A large population was found on 10th July 2020 around an artificial garden pond in Simmerschmelz. According to the garden owner, the species was not planted, it suddenly appeared several years ago.

Population of Mimulus guttatus around a pond in Simmerschmelz. Photo: 10 July 2020 by C. Ries.

15 records are accessible through the MNHNL-mdata portal (MNHNL, iNaturalist & GBIF 2020).

Rare to very rare, naturalised; expanding, at least locally, in the wild. Sometimes cultivated for ornamental purposes along watercourses (Lambinon & Verloove 2012: 634).

Risk assessment

ISEIA protocol

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

Harmonia+ protocol

Overall risk score 0,16 = (Overall Invasion score 0,71 x Overall Impact score 0,23) (Ries et al. 2020).


Worldwide distribution


  • Baus, E., E. Branquart, S. Vanderhoeven, W. Van Landuyt, F. Van Rossum & F. Verloove 2010. Harmonia database: Mimulus guttatus DC.. Harmonia version 1.2, Belgian Forum on Invasive Species. URL: http://ias.biodiversity.be [accessed on 2019-10-14]
  • CABI, 2019. Mimulus guttatus. In: Invasive Species Compendium. Wallingford, UK: CAB International. URL: www.cabi.org/isc [accessed 2020-03-02]
  • Colling , G. & Y. Krippel, 2001. Notes floristiques. Observations faites au Luxembourg (1998-1999). Bull. Soc. Nat. luxemb. 101: 33-48. [PDF 331 Kb]
  • Krippel, Y., T. Helminger & G. Colling, 2020. Notes floristiques. Observations faites au Luxembourg (2018-2019). Bulletin Soc. Nat. luxemb. 122 : 29-55. [PDF 132 KB]
  • 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-. Mimulus guttatus DC. 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 2019-10-14]
  • MNHNL, iNaturalist & GBIF, 2020. Mimulus guttatus DC. 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 2020-07-20]
  • 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]

 Page content last updated on 2021-03-04. Last proofread by Caroline Grounds on 2019-11-20.