Chilocardamum

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Chilocardamum
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Brassicales
Family: Brassicaceae
Tribe: Thelypodieae
Genus: Chilocardamum
O.E.Schulz [1]
Synonyms [2]

Chilocardamum is a small genus of four herbaceous cress-like species of plants in the family Brassicaceae, only found growing in Patagonia, southern Argentina.

Contents

Taxonomy

It was first described in 1924 by the German botanist Otto Eugen Schulz. [1] The first known species, Ch. patagonicum, was initially classified as a Sisymbrium by Carlo Luigi Spegazzini in 1897. [3] [4] 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. [5] Dimitria was a monotypic genus created by the Chilean botanist Pierfelice Ravenna to house Ch. onuridifolium in 1972; [6] now considered a synonym of the genus Chilocardamum, [2] it was already synonymised with Sisymbrium by the Argentine botanist M. C. Romanczuk in 1981. [6]

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. [7]

Distribution

The genus is endemic to southern Argentina. [2] [3]

Species

As of 2017, the four species accepted in the Plants of the World Online database, and in the Flora del Conosur , are: [2] [3]

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References

  1. 1 2 "Chilocardamum O.E.Schulz". International Plant Names Index . The Royal Botanic Gardens, Kew, Harvard University Herbaria & Libraries and Australian National Botanic Gardens. Retrieved 21 October 2020.
  2. 1 2 3 4 "Chilocardamum O.E.Schulz". Plants of the World Online . Royal Botanic Gardens, Kew. 2017. Retrieved 21 October 2020.
  3. 1 2 3 "Búsqueda rápida de Géneros - Chilocardamum". Flora del Conosur (in Spanish). Instituto de Botánica Darwinion. Retrieved 21 October 2020.
  4. "Sisymbrium patagonicum Speg". International Plant Names Index . The Royal Botanic Gardens, Kew, Harvard University Herbaria & Libraries and Australian National Botanic Gardens. Retrieved 21 October 2020.
  5. Al-Shehbaz, Ihsan Ali (4 December 2006). "The genus Sisymbrium in South America, with synopses of the genera Chilocardamum, Mostacillastrum, Neuontobotrys, and Polypsecadium (Brassicaceae)". Darwiniana. 44 (2): 343–344. ISSN   0011-6793 . Retrieved 21 October 2020.
  6. 1 2 "Dimitria onuridifolia". International Plant Names Index . The Royal Botanic Gardens, Kew, Harvard University Herbaria & Libraries and Australian National Botanic Gardens. Retrieved 21 October 2020.
  7. Salariato, D. L.; Al-Shehbaz, Ihsan Ali (2014). "Zuloagocardamum (Brassicaceae: Thelypodieae) a New Genus from the Andes Highlands of Northern Argentina". Systematic Botany. 39 (2): 563–577. doi:10.1600/036364414X680898. S2CID   85386273 . Retrieved 21 October 2020.