Perideridia americana

Perideridia americana
Perideridia americana photographed in Missouri tallgrass prairie.

Apparently Secure  (NatureServe)
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Apiales
Family: Apiaceae
Genus: Perideridia
Species: P. americana
Binomial name
Perideridia americana
(Nutt. ex DC.) Rchb.

Perideridia americana is a species of flowering plant in the carrot family known by the common names Eastern yampah and wild dill. It has been found in 12 Midwestern United States, and is listed as threatened or endangered in at least 3 of them.[1] In Missouri it is a conservation species of concern.[2]

Wild dill grows in calcareous soils in many habitat types, including glades, upland prairies, and forests.[3] It is a perennial herb whose upright stems are between 50 and 120 centimeters tall, with sparse alternate doubly pinnate leaves ending in long tapering leaflets. The inflorescence is a compound umbel of many spherical clusters of small white flowers. The fruits are 3-5 millimeters long with 5 slender ribs.


References

  1. "Perideridia americana at USDA". Retrieved August 16, 2016.
  2. "Missouri Plant Species of Conservation Concern" (PDF). January 2016. Retrieved August 16, 2016.
  3. Yatskievych, George (June 2006). Steyermark's Flora of Missouri. St. Louis, Missouri: The Missouri Botanical Garden Press. ISBN 1-930723-49-0.


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