Terraria haydenii

Terraria haydenii
Conservation status
Critically Imperiled  (NatureServe) [1]
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Brassicales
Family:	Brassicaceae
Tribe:	Thelypodieae
Genus:	Terraria T.J.Hildebr. & Al-Shehbaz
Species:	T. haydenii
Binomial name
Terraria haydenii T.J.Hildebr. & Al-Shehbaz

Terraria haydenii, commonly known as Frisco Mountains mustard, ^[1] is a species of flowering plant in the family Brassicaceae, and the sole species in genus Terraria. It is a subshrub endemic to Utah. ^{[2] [3]}

The species was discovered in 2012, and formally published in 2017. It is known only from two small populations in Wah Wah Mountains in the Great Basin. It grows in dry, highly alkaline soils. The populations are on land owned by the Bureau of Land Management, and are separated from each other by a road. The species is threatened with habitat loss from mineral extractions, recreational rock collecting for spider marble, and soil disturbance from livestock grazing. ^[1]

References

1. "Terraria haydenii". NatureServe Explorer. NatureServe. 4 March 2019. Retrieved 29 July 2025.
2. "Terraria haydenii T.J.Hildebr. & Al-Shehbaz". Plants of the World Online . Royal Botanic Gardens, Kew . Retrieved 29 July 2025.
3. Hildebrand, Terri J.; Al-Shehbaz, Ihsan A. (2017). "Terraria haydenii (Thelypodieae, Brassicaceae), a new mustard genus and species from the West Desert region of North America's Great Basin". Phytotaxa. 323 (2): 128–142. Bibcode:2017Phytx.323..128H. doi:10.11646/phytotaxa.323.2.2.