Chilocardamum

Chilocardamum is a small genus of four herbaceous cress-like species of plants in the family Brassicaceae, only found growing in Patagonia, southern Argentina. 
Taxonomy.
It was first described in 1924 by the German botanist Otto Eugen Schulz. The first known species, "Ch. patagonicum", was initially classified as a "Sisymbrium" by Carlo Luigi Spegazzini in 1897. The other three species were more recently moved to this genus from "Sisymbrium" by the Iraqi botanist Ihsan Ali Al-Shehbaz, when he resurrected the genus in 2006. "Dimitria" was a monotypic genus created by the Chilean botanist Pierfelice Ravenna to house "Ch. onuridifolium" in 1972; now considered a synonym of the genus "Chilocardamum", it was already synonymised with "Sisymbrium" by the Argentine botanist M. C. Romanczuk in 1981.
Description.
"Chilocardamum" is quite similar in fruit and flower to "Zuloagocardamum" and "Weberbauera". It is distinguished by having trichomes which are branched and dendritic, rarely with a few simple trichomes in the indumentum, the basal leaves are sessile and linear or awl-shaped, the stems are elongated and have cauline leaves, the inflorescence is an ebracteate raceme which is longer than the basal leaves, and seeds without mucilage. The fruit are non-curved, linear siliques which are not torulose.
Distribution.
The genus is endemic to southern Argentina.
Species.
As of 2017, the four species accepted in the "Plants of the World Online" database, and in the "Flora del Conosur", are: