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Physaria arctica
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Brassicales
Family:	Brassicaceae
Genus:	Physaria
Species:	P. arctica
Binomial name
Physaria arctica (Wormsk. ex Hornem.) O'Kane & Al-Shehbaz

Physaria arctica is a perennial flowering herb in the family Brassicaceae, known by the common name arctic bladderpod.

Description

Plants are 6–12 cm high with a short taproot and woody stem-base. Basal leaves, 2–6 cm and arranged in a rosette predominate, and are obovate to oblanceolate, while cauline leaves, sessile or shortly petiolate, are oblanceolate or lingulate and 0.5-1.5 cm. Inflorescences are loosely racemose, with flower stalks ascending or erect and 5–20 mm. There are 3-8 radially symmetrical flowers per inflorescence, and the petals are spaulate, 5-6mm, with blades that narrow gradually to the claw.

Habitat

Physaria arctica grows in sand and gravel from calcareous bedrock, river bars and terraces, cliff ledges, scree and talus slopes.

References

1. "Physaria arctica (Wormsk. ex Hornem.) O'Kane & Al-Shehbaz". Integrated Taxonomic Information System (ITIS). Retrieved 17 June 2016.
2. Aiken, S.G.; et al. "Flora of the Canadian Arctic Archipelago: Lesquerella arctica (Wormskjold. ex Hornem.) S. Watson". Canadian Museum of Nature. Canadian Museum of Nature. Retrieved 17 June 2016.
3. ^ Douglas, G.W.; D.V. Meidinger; J. Pojar, eds. (1999). Illustrated Flora of British Columbia. Volume 4: Dicotyledons (Orobanchaceae Through Rubiaceae). Victoria: B.C. Ministry of Environment, Lands & Parks and B.C. Ministry of Forests.
4. ^ "Physaria arctica". Flora of North America. Retrieved 17 June 2016.

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