A low but upright herbaceous plant, normally shorter than 30 cm but can grow taller in marshland. Stem arises from basal rosette of leaves that have about 5 roundish stalked leaflets on each side and a larger one at the end. Stem leaves are similar but smaller and often with narrower leaflets. Flowers are always white, and normally have 6 stamens (Framer, 2002). Ripe side pods are about 12 - 25 mm long and explode when ripe, dispersing seeds up to 500 m (Varnham, 2006). Usually perrenial but can be annual or biannual depending on environmental conditions.
Cardamine flexuosa is sometimes regarded as a subspecies of Cardamine hirsuta (ITIS, 1998). Morphological resemblances are very strong and the two species are known to hybridise in the wild in Austria (Ellis & Jones, 1969).
Cardamine flexuosa is capable of growing in a variety of environments over a wide range of light and disturbance conditions (Kudoh et al., 1993). Capable of growing in a variety of soil types and acidities but requires it to be moist or wet. In Japan, Cardamine flexuosa is often found as an agricultural weed in paddy fields, crop fields and orchards (Kudoh et al., 1993).
Cardamine flexuosa is a hemaphrodite capable of self-pollination (Plants for a Future, 2008). Hundreds of small seeds are produced in small pods which explode when disturbed (Shanklin, 2006; Varnham, 2006) and can remain viable in the ground for up to 7 years (South Georgia Newsletter, 2005a).
Cardamine flexuosa was possibly transported in stores or footwear from the Falkland Islands where it grows abundantly. Seeds are sticky when wet and can be easily spread on clothing or animals.Cardamine flexuosa was possibly introduced to King Edward Point on vehicles brought in for rebuilding in 2000.Cardamine flexuosa was possibly transported in stores or footwear from the Falkland Islands where it grows abundantly. Seeds are sticky when wet and can be easily spread on clothing or animals.
Compiler: IUCN SSC Invasive Species Specialist Group (ISSG) with support from the Overseas Territories Environmental Programme (OTEP) project XOT603, a joint project with the Cayman Islands Government - Department of Environment
Publication date: 2010-06-02
Recommended citation: Global Invasive Species Database (2017) Species profile: Cardamine flexuosa. Downloaded from http://www.iucngisd.org/gisd/speciesname/Cardamine+flexuosa on 16-12-2017.