Corydalis cava

Physical Characteristics

Corydalis cava is a PERENNIAL growing to 0.2 m (0ft 8in) by 0.1 m (0ft 4in). See above for USDA hardiness. It is hardy to UK zone 6. It is in leaf from March to June, in flower from February to May. The species is hermaphrodite (has both male and female organs) and is pollinated by Bees. Suitable for: light (sandy) and medium (loamy) soils and prefers well-drained soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in semi-shade (light woodland). It prefers moist soil.

Distribution

E. Europe. A rare garden escape in Britain[17].

Habitats

Woodland Garden Dappled Shade; Shady Edge;

Edible Uses

None known

Medicinal Uses

Analgesic Antianxiety Antidepressant Antiseptic Antispasmodic Antitussive Cancer Cardiotonic Hallucinogenic Hypotensive Sedative The tuber is antispasmodic, hallucinogenic and also slows the pulse[9]. It is harvested in the spring before the plant comes into flower and dried for later use[9]. The plant should only be used under the guidance of a trained herbalist, it is used in the treatment of Parkinson's disease and other neurological disorders[9]. One report says that the plant is cultivated for its medicinal uses in Sweden, but gives no more details[175]. The following reports are for C. yanhusuo which, according to one authority, is the correct name for this species[218]. It is treated as a separate species here[K]. The tuber is analgesic, antiseptic, antispasmodic and sedative[176]. The root has traditionally been used to lower pain and strengthen the circulation[218]. It also has sedative properties and is used in the treatment of a wide range of ailments[218]. Various extracts from the plant have shown antitussive, cardiotonic, hypotensive and anticancer activity[218].

Known Hazards

Although no specific mention has been seen for this species, there is a report that Corydalis species are potentially toxic in moderate doses[222].