Corydalis cava (L.) Schweigg. et Körte (syn.: C. tuberosa DC.) (S, C and E-Eur.) – An exceptional, very locally naturalized relic of cultivation. At present only known from a few localities near Ermeton-sur-Biert (Lannoy 2006). At this location Corydalis cava is very well established and its local spread towards the valley of riverlet Molignée was recently reported (Saintenoy-Simon & Lannoy 2010; see also records since 2008 in Sosoye). Around 1861 also found near Etalle but probably gone now. A record from Martelange in 1997 requires confirmation.
Corydalis cava is native close to the Belgian frontiers (western Germany and northeastern France). However, all Belgian records are clearly non-native (old estates, parks, etc.).
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Selected literature:
Bunting C.S. (1966) Typification of Corydalis bulbosa (Fumariaceae). Baileya 14: 40-44.
Lannoy M. (2006) Une imposante population de Corydalis cava dans le parc du monastère Notre-Dame à Ermeton-sur-Biert. Adoxa 51: 1-2.
Leys H. (1986) Oecologische en vegetatiekundige aspecten van de Holwortel (Corydalis bulbosa). Rijksinstituut voor Natuurbeheer, Rapport 86/11: 132 p.
Saintenoy-Simon J. & Lannoy M. (2010) Excursion à Ermeton-sur-Biert le 4 avril 2009. Adoxa 65-66: 6-8.