Pimpinella peregrina L. (S-Eur.) – A very rare, locally naturalized alien. Possibly overlooked. First detected on levelled soil near the city walls of Ieper in 2000 (Verloove 2001). There were only few specimens and this small population soon disappeared. Subsequently discovered on a talus slope of the Albertkanaal between Veldwezelt and Lanaken in 2003 and firmly established there (confirmed in 2014 for instance). In this locality Pimpinella peregrina is very abundant on a dry, calcareous and sun-exposed slope. An introduction with grass seed seems most likely (see also Gerstberger 1985, Svenson & Anderberg 1994, Dirkse & al. 2008, Koelink & al. 2008, etc.).
In general habit Pimpinella peregrina reminds of native P. saxifraga and both might be confused. In addition to the characters mentioned in the key Pimpinella peregrina nearly always has more rays per umbel and basal leaves are usually undivided.
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Selected literature:
Dirkse G.M., Holverda W.J., Hochstenbach S.M.H. & Reijerse A.I. (2008) Solanum carolinense L. en Pimpinella peregrina L. in Nederland. Gorteria 33: 21-27.
Gerstberger P. (1985) Pimpinella peregrina L. – eine neue Adventivpflanze für die Bundesrepublik Deutschland. Ber. Bayer. Bot. Ges. 56: 89-93. [available online at: http://www.bbgev.de/berichte/056_1985/pimpinella_peregrina.pdf]
Gutte P. (1998) Pimpinella peregrina - neu für Sachsen. Sächsische Floristische Mitteilungen 5: 97-98.
Kellner K. (1991) Pimpinella peregrina L. in einer Rasenansaat bei Kirchhain (MTB 5119/41). Hessische Floristische Briefe 40(2): 20-21.
Klotz J. (2012) Pimpinella peregrina und Sanguisorba minor subsp. polygama bei Regensburg: Ausbreitung durch Rasenansaaten. Hoppea 73: 127-134.
Koelink J., Adams J. & Ploumen N. (2008) De Vreemde bevernel, een nieuwe plant voor Limburg. Natuurhist. Maandbl. 97: 1-3. [available online at: http://www.nhgl.nl/redactie/natuurhistorisch-maandblad?jsmallfib=1&dir=JSROOT\openbaar\redactie\natuurhistorisch-maandblad/Maandbladen/Maandblad%202008&tab=downloaden#downloaden]
Prosser F. (1190) Zwei bemerkenswerte Pflanzenfunde an der Plesseburg (Göttingen): Pimpinella peregrina L. und Anthriscus cerefolium (L.) Hoffm. Floristische Rundbriefe 24(2): 83-85.
Sill E. (1997) Pimpinella peregrina L. erneut in Bayern gefunden. Berichte der Bayerischen Botanischen Gesellschaft 68: 174.
Smettan H.W. (2003) Die Fremde Bibernelle (Pimpinella peregrina) im Neckarland/Württemberg. Ber. Bot. Arbeitsgem. Südwestdeutschland 2: 107-111. [available online at: http://www.botanik-sw.de/BAS/media/texte/Bericht_2.pdf]
Svenson A. & Anderberg A.A. (1994) Lång bockrot, Pimpinella peregrina, ny för Sverige – etablerad från insådd ängsfröblandning. Svensk Bot. Tidskr. 88: 357-360.
Verloove F. (2001) Pimpinella peregrina L., nieuw voor de Belgische flora in Ieper. Dumortiera 78: 18-19. [available online at: http://alienplantsbelgium.be/sites/alienplantsbelgium.be/files/dum78p18.pdf]
Yurtseva O.V. (1991) Morphological variability in Pimpinella peregrina L. s.l. (Umbelliferae: Apioideae) (in Russian). Byull. Mosk. Obshch. Ispyt. Prir., Biol. 96(4): 89-100.