Cardamine corymbosa

New Zealand bitter-cress
	Flowers
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Brassicales
Family:	Brassicaceae
Genus:	Cardamine
Species:	C. corymbosa
Binomial name
	Cardamine corymbosa; Hook.f.
Synonyms
	Cardamine hirsuta var. corymbosa (Hook.f.) Hook.f.;

Cardamine corymbosa, commonly known as the New Zealand bitter-cress,^[2] is a flowering plant in the family Brassicaceae. Native to the subantarctic islands of Australasia, it has become an invasive species in plant nurseries. The specific epithet refers to the structure of the inflorescence.^[3]

Description[]

New Zealand bittercress was described by Hooker as “a small and very distinct species of Cardamine, wiry and fragile in every part’’.^[1] The plant has a low and spreading growth habit with unbranched stems which creep along the ground. It produces daughter plants through rooting at the nodes. The basal, compound leaves have three to five leaflets, with the terminal leaflet being up to twice as large as the lateral ones.^[4]

Distribution and habitat[]

The plant is native to New Zealand’s subantarctic Auckland and Campbell Islands, as well as to Australia’s Macquarie Island, where it occurs in alpine tundra and rocky coastal habitats. It has been accidentally introduced to other parts of the world, including North America and Europe, where it is a weed of nursery crops grown in polytunnels.^[4]

Cardamine corymbosa siliquae (fruits)

References[]

^ ^a ^b Hooker (1844).
^ BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
^ Flora of Australia Online.
^ ^a ^b Post et al. (2009).

Sources[]

Hooker, J.D. (1844). "The Botany of the Antarctic Voyage of H.M. Discovery Ships Erebus and Terror in the Years 1839–1843, under the command of Captain Sir James Clark Ross". Fl. Antarct. 1: 6.
Post, A.R.; Neal, J.C.; Krings, A.; Sosinski, B.R.; Xiang, Q. (2009). "New Zealand Bittercress (Cardamine corymbosa; Brassicaceae): New to the United States" (PDF). Weed Technology. 23 (4): 604–607. doi:10.1614/wt-09-017.1. S2CID 86842896.
"Cardamine corymbosa Hook.f." Flora of Australia Online. Australian Biological Resources Study. 1993. Retrieved 2011-01-23.

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[Hooker-1] Hooker (1844).

[BSBI07-2] BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.

[fao-3] Flora of Australia Online.

[post-4] Post et al. (2009).

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