Stenopetalum

Classification System: APG IV

Superregnum: Eukaryota
Cladus: Orthokaryota
Cladus: Neokaryota
Cladus: Photokaryota
Cladus: Diaphoretickes
Cladus: CAM
Regnum*: Archaeplastida
Regnum: Plantae
Regnum*: Viridiplantae
Cladus: Streptophyta
Cladus: Phragmoplastophyta
Cladus: Embryophyta
Cladus: Polysporangiophyta
Divisio*: Tracheophyta
Cladus: Eutracheophyta
Cladus: Euphyllophytina
Cladus: Megaphylla
Cladus: Radiatopses
Cladus: Lignophyta
Cladus: Metalignophyta
Diviso*: Spermatophyta
Classis*: Angiospermae
Cladus: Mesangiospermae
Cladus: Eudicota
Cladus: Core eudicots
Cladus: Rosids
Cladus: Eurosids II
Ordo: Brassicales

Familia: Brassicaceae
Subfamilia: Brassicoideae
Tribus: Microlepidieae
Genus: Stenopetalum
Species: S. anfractum – S. decipiens – S. filifolium – S. lineare – S. nutans – S. pedicellare – S. robustum – S. salicola – S. saxatile – S. sphaerocarpum – S. velutinum
Name

Stenopetalum R.Br. ex DC. Syst. Nat. [Candolle] 2: 513. (1821); et Mem. Mus. Par. 7: 239 (1821)

Type species: Stenopetalum lineare R.Br. ex DC. Syst. Nat. [Candolle] 2: 513. (1821)

References

Brown, R. 1821. Regni Vegetabilis Systema Naturale, sive Ordines, Genera et Species Plantarum Secundum Methodi Naturalis Normas Digestarum et Descriptarum. Paris 2: 513.
Stenopetalum in: Australian Plant Census (APC) 2017. IBIS database, Centre for Australian National Biodiversity Research, Council of Heads of Australasian Herbaria. Accessed: 2017 Jan. 22.
Heenan, P.B., Goeke, D.F., Houliston, G.J. & Lysak, M.A. 2012. Phylogenetic analyses of ITS and rbcL DNA sequences for sixteen genera of Australian and New Zealand Brassicaceae result in the expansion of the tribe Microlepidieae. Taxon 61(5): 970–979. Full text PDF Reference page.
International Plant Names Index. 2017. Stenopetalum. Published online. Accessed: Jan. 22 2017. Reference page.
Keighery, G.J. 2002. Taxonomic notes on the genus Stenopetalum (Brassicaceae). Nuytsia 14(3): 393–403. Full text PDF from ResearchGate
Koch, M.A. et al. 2017. Stenopetalum in BrassiBase Tools and biological resources to study characters and traits in the Brassicaceae. Published online. Accessed: 2017 Jan. 22.
Tropicos.org 2017. Stenopetalum. Missouri Botanical Garden. Published online. Accessed: 22 Jan. 2017.
Warwick, S.I., Francis, A. & Al-Shehbaz, I.A. 2006. Brassicaceae: species checklist and database on CD-Rom. Plant Systematics and Evolution 259(2–4): 249–258. DOI: 10.1007/s00606-006-0422-0 ResearchGate Reference page.

Stenopetalum (common name thread petal)[3] is a genus in the Brassicaceae family which is endemic to Australia.[4] It was first described by Robert Brown in 1821.[1][2]
Species

There are 11 species in the genus.[5][6]

Stenopetalum anfractum E.A. Shaw
Stenopetalum decipiens E.A. Shaw
Stenopetalum filifolium Benth.
Stenopetalum lineare R. Br. ex DC.
Stenopetalum nutans F. Muell.
Stenopetalum pedicellare F. Muell. ex Benth.
Stenopetalum robustum Endl.
Stenopetalum salicola Keighery
Stenopetalum saxatile Keighery
Stenopetalum sphaerocarpum F. Muell.
Stenopetalum velutinum F. Muell.

Description

Plants in this genus may be annuals or perennials. They are erect, and may be with or without hairs. The sepals are saccate (shaped like a pouch or sack) and have two forms. The petals are clawed, and drawn out into long narrow apex. There are six stamens. The fruit open at maturity to release the seeds. There are four to twenty mucous seeds in each locule, arranged in two rows.[4]
Etymology

The name Stenopetalum derives from the Greek, stenos, ("narrow"), and the Latin, petalum, ("petal") and describes plants in the genus as having long, narrow petals.[4]
References

"Stenopetalum". Australian Plant Name Index, IBIS database. Centre for Plant Biodiversity Research, Australian Government. Retrieved 12 January 2021.
de Candolle, Augustin Pyramus (1821), Regni vegetabilis systema naturale [...] Volumen secundum, Parisiis : Sumptibus sociorum Treuttel et Würtz, rue de Bourbon, nº. 17 ; Argentorati et Londini : venitque in eorundem bibliopoliis, p. 513, Wikidata Q51525030
"Stenopetalum". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions. Retrieved 12 January 2021.
H.J. Hewson (2020). "Stenopetalum". Flora of Australia. Canberra: Australian Biological Resources Study, Department of Agriculture, Water and the Environment. Retrieved 12 January 2021.
"Stenopetalum R.Br. ex DC. | Plants of the World Online". Plants of the World Online. Retrieved 12 January 2021.

Western Australian Herbarium, Biodiversity and Conservation Science. "FloraBase—the Western Australian Flora: Stenopetalum". florabase.dpaw.wa.gov.au. Retrieved 12 January 2021.