Physaria ludoviciana

Physaria ludoviciana is a species of flowering plant in the mustard family Brassicaceae, with the common names of bladder pod, silver bladderpod,[2] and foothill bladderpod. It used to be Lesquerella ludoviciana which is now a synonym.[3]

Physaria ludoviciana
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Brassicales
Family: Brassicaceae
Genus: Physaria
Species:
P. ludoviciana
Binomial name
Physaria ludoviciana
(Nutt.) O'Kane & Al-Shehbaz
Synonyms[1]

Description
Physaria ludoviciana habit.

Physaria ludoviciana is a taprooted perennial, growing 6-16 inches tall.[4] The flowers have four sepals and four yellow petals and six stamens.[5] The leaves are simple, narrow, and covered with stellate-pilose hairs. The basal leaves are produced in a rosette. The two loculed fruits are a globe-like silicle with dense pilose hairs.[5] Flowering occurs in early spring to mid/late summer, and some plants are polyploids.[6]

Distribution and habitat

It is an endangered species in Illinois and Minnesota, and a threatened species in Wisconsin.[7] In all three states this species is outside of its main range which is more western, growing in the dry plains.[5] The Minnesota populations are found around Red Wing in Goodhue County;[6] they are 500 kilometers from the species main range in the west and it is speculated it was introduction there by the long-range dispersal of a single seed or they are remnants from when the environment was drier and the species had a greater natural range. [5] The Minnesota plants are found in dry prairie on south-facing bluffs in sandy soil originating from weathered limestone; the populations are threatened by the encroachment of woody and invasive species due to human suppression of fires.[5]

Physaria ludoviciana is avoided by grazing animals.[6]

References
  1. "Physaria ludoviciana (Nutt.) O'Kane & Al-Shehbaz | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 2021-01-20.
  2. "Threatened Search Results | USDA PLANTS". plants.usda.gov. Retrieved 2021-01-20.
  3. "Physaria ludoviciana (Nutt.) O'Kane & Al-Shehbaz | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 2021-01-20.
  4. "Physaria ludoviciana (Bladderpod): Minnesota Wildflowers". www.minnesotawildflowers.info. Retrieved 2021-01-20.
  5. Barbara Coffin; Lee Pfannmuller (1988). Minnesota's Endangered Flora and Fauna. U of Minnesota Press. p. 106. ISBN 978-0-8166-1689-3.
  6. "Physaria ludoviciana : Bladderpod | Rare Species Guide". Minnesota Department of Natural Resources. Retrieved 2021-01-20.
  7. "Physaria ludoviciana (Bladderpod): Minnesota Wildflowers". www.minnesotawildflowers.info. Retrieved 2021-01-20.
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