Acirostrum

Life-forms

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: Arabideae
Genus: Acirostrum
Species: A. alaschanicum
Name

Acirostrum Y.Z. Zhao (2012)

monotypic taxon

Synonyms

Homotypic
Borodiniopsis D. German, M.A. Koch, R. Karl & Al-Shehbaz (2012)

References

Al-Shehbaz, I.A., German, D.A., Karl, R., Jordon-Thaden, I. & Koch, M.A. 2011. Nomenclatural adjustments in the tribe Arabideae (Brassicaceae). Plant Diversity and Evolution 129(1): 71–76. DOI: 10.1127/1869-6155/2011/0129-0044 Full text PDF from ResearchGate Reference page.
Koch, M.A., Karl, R., German, D.A. & Al-Shehbaz, I.A. 2012. Systematics, taxonomy and biogeography of three new Asian genera of Brassicaceae tribe Arabideae: An ancient distribution circle around the Asian high mountains. Taxon 61(5): 955–969. Full text from ResearchGate Reference page.
Koch, M.A. et al. 2016. Acirostrum in BrassiBase Tools and biological resources to study characters and traits in the Brassicaceae. Published online. Accessed: 2016 Oct. 25.
Acirostrum is a monotypic genus of flowering plants that consists solely of the species Acirostrum alaschanicum. The plant is found in Inner Mongolia, Qinghai, and the central regions of China.[1]
Description

Acirostrum alaschanicum is a small perennial plant with a long, spindle-shaped root. The leaves are an obtuse shape with a pointed end, and are carried on winged leafstalks. The leaf blades are covered in simple hairs. The flowers are borne on a cluster called a raceme that is elongated in shape. Each flower has erect sepals that do not exceed the length of the petals.[3]
Taxonomy

The plant was first described as Arabis alaschanicum in 1880 by Karl Maximovich. Even in these early writings about it, there was uncertainty as to its placement in Arabis. However, it could not be placed into other related genera like Cardamine because of its unique morphology.[3] Acirostrum was established in 2012, and the superfluous name Borodiniopsis is considered a synonym of the genus.[1] The genus was split from the polyphyletic taxon Arabis, and it is most closely related to Botschantzevia, another small genus in Brassicaceae.[4]
References

"Acirostrum". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 4 December 2023.
"Acirostrum alaschanicum". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 4 December 2023.
Maximovich, Karl (1880). "Diagnoses plantarum novarum asiataricum. III. Scripsit". Bulletin de l'Académie impériale des sciences de St.-Pétersbourg. 26: 421 – via Biodiversity Heritage Library.
Özüdoğru, Barış; Fırat, Mehmet (2016-12-01). "Arabis watsonii (P.H.Davis) F.K.Mey.: An overlooked cruciferous species from eastern Anatolia and its phylogenetic position". PhytoKeys (75): 57–68. doi:10.3897/phytokeys.75.10568. ISSN 1314-2003. PMC 5234537. PMID 28127244.