Spring beauty	Status LU: casual. 1st record: LU & ITW 1988.
	Wanter-Portulak	Status Eur.: established.
	Claytone de Cuba	RA: ISEIA: C1. Harmonia+: 0,04
	Gewöhnliches Tellerkraut, Winterportulak	Wikipedia: | Wikispecies:
	Winterpostelein	Back to the list of neophytes

Report the species

→ Report Claytonia perfoliata to the National Museum of Natural History.

Brief description

Claytonia perfoliata Donn ex Willd. (syn. Montia perfoliata), also known as miner’s lettuce or winter purslane, is a fleshy, herbaceous, annual plant native to the western mountainous and coastal regions of Northern America. The common name of miner’s lettuce refers to how the plant was used by miners during the California Gold Rush, who ate it to prevent scurvy. It has been widely naturalised in western Europe, after being introduced there in the eighteenth century, possibly by the naturalist Archibald Menzies, who brought it to Kew Gardens in London in 1794 (Wikipedia contributors, 2019).

Status and distribution in Luxembourg

The oldest specimen in the herbarium of the Museum dates from 1866 and was collected in the Brussels district Uccle, Belgium, but it mentions no exact date nor a collectors name (Specimen № 2515, MNHNL 2000-).

In Luxembourg, Claytonia perfoliata Donn ex Willd. was first observed by Paul Diederich in the spring of 1988 en masse in a nursery on the plateau south-east of Lorentzweiler (LUREF 79436 E / 83775 N¹). At the same time, a few individuals were found under a tree planted in front of building n°17 on Avenue Guillaume in Luxembourg City (Reichling 1990: 58). In spring 1989, the plant was observed by Jean-Marie Mangen in an ornamental plantation at Geessekneppchen in Luxembourg City (Reichling 1990: 59). In Summer 1989, it was next observed by Kariger: 1989-06-25 on flower beds of the grounds around the City Theatre on Limpertsberg, Luxembourg City, as weed in a plant association belonging to the Digitario-Setarienion; 1989-06-10 also as a weed in flower pots at the Finsterthal campsite (Kariger 1990: 76).

On May 16, 2004, Yves Krippel and Tania Wambach observed the species growing on a surface of ± 10 m² in the woods and in a lawn on the edge of the mini-golf of the camping Maartboesch in Berdorf (Krippel et al. 2006).

Currently, 10 records of the species in Luxembourg are accessible through the MNHNL-mdata portal (MNHNL, iNaturalist & GBIF 2021).

Once grown in gardens as a vegetable plant (Lambinon & Verloove 2012: 149).

Risk assessment

ISEIA protocol

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

Harmonia+ protocol

Overall risk score 0,04 = (Overall Invasion score 0,46 x Overall Impact score 0,08) (Ries et al. 2020).

Bibliography

• Kariger, J.-J., 1990. Auf der Suche nach Seltenheiten und verschwundenem 1970-1989. Bericht und Auswahl floristischer Tätigkeit ergänzt durch ökologische Betrachtungen. Bulletin de la Société des naturalistes luxembourgeois 90: 71-101.
• Krippel, Y. & G. Colling, 2006. Notes floristiques. Observations faites au Luxembourg (2004-2005). Bull. Soc. Nat. luxemb. 107: 89-103. [PDF 288 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-. Claytonia perfoliata Donn ex Willd. 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. Claytonia perfoliata Donn ex Willd. 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 2021-01-12]
• Reichling, L., 1990. Observations floristiques au Luxembourg 1980-1989. Bull. Soc. Nat. luxemb. 90: 55-70. [PDF 808 KB]
• 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]
• Wikipedia contributors, 2019. Claytonia perfoliata Donn ex Willd. in Wikipedia, The Free Encyclopedia, 24 September 2019. URL: https://en.wikipedia.org/w/index.php?title=Claytonia_perfoliata&oldid=917517303 [accessed 2 October 2019]