Cardamine Genus bitter-cress; toothwort Brassicaceae

 

Cardamine hirsuta.Walter Obermayer.www.uni-graz.at.2

Cardamine hirsuta flowers and fruit. Walter Obermayer.www.uni-graz.at. (Accessed 5/2014).

Cardamine Genus are herbs herbs, ours mostly rather small annuals, biennials or spring ephemerals, some colonial, mostly hairless. 

Leaves alternate, ours pinnate to three-parted. 

Cardamine hirsuta NRM. commons.wikimedia.org. jpg

Cardamine hirsuta flower. NRM. commons.wikimedia.org. jpg (Accessed 11/2017).

Flowers white (ours), petals and sepals 4 each, small, stamens, 6 or less, ovary inferior, linear, cylindrical. 

Cardamine hirsuta hairy bitter cress. Photo by Phil Bendle. T.E.R.R.A.I.N. terrian.net.nz

Cardamine hirsuta (hairy bitter cress) fruit and seeds. Photo by Phil Bendle. T.E.R.R.A.I.N. terrian.net.nz (Accessed 11/2017)

 

 

Fruit becoming dry, a linear capsule divided into two longitudinal compartments by a membranous partition, tipped by persistent style, fruit developing below old flower parts as inflorescence stalk elongates with buds and new flowers at tip; fruit capsule splitting open to release numerous seeds, one row on each side of the persistent central partition .