Potentilla hendersonii

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Rosids
Cladus: Eurosids I
Ordoo: Rosales

Familia: Rosaceae
Subfamilia: Rosoideae
Tribus: Potentilleae
Subtribus: Potentillinae
Genus: Potentilla
Species: Potentilla hendersonii
Name

Potentilla hendersonii (Howell) J.T.Howell
Synonyms

Horkelia hendersonii Howell

References

Leaflets of Western Botany 4(6): 176. 1945.

Links

International Plant Names Index. 2017. Potentilla hendersonii. Published online. Accessed: Oct. 01 2017.
The Plant List 2013. Potentilla hendersonii in The Plant List Version 1.1. Published on the internet. Accessed: 2017 Oct. 01.
Tropicos.org 2017. Potentilla hendersonii. Missouri Botanical Garden. Published on the internet. Accessed: O1 Oct. 2017.

Potentilla hendersonii or Horkelia hendersonii is a rare species of flowering plant in the rose family known by the common name Henderson's horkelia. It is known from four populations in southern Oregon, including Mount Ashland, and one population south of the border in Siskiyou County, California.[1] It is a resident of dry forest habitat in the granite soils of the Klamath Mountains. This is a perennial herb producing a low mat of hairy, glandular gray-green foliage about a woody base. The leaves are cylindrical and sometimes tapering to a point, growing erect in a patch around the caudex. Each leaf is 3 to 8 centimeters long and is made up of densely spaced pairs of minutely toothed leaflets. The leaflets are coated in silky hairs. The inflorescence is a dense array flowers atop an erect stalk, each flower made up of five hairy, pointed sepals and five smaller, more delicate white petals.

Although few populations of the plant are known to exist, they are not in imminent danger of destruction and a federal listing as an endangered or threatened species was declined in 2003.[1] The Mount Ashland populations of this plant are sometimes threatened by recreational activities at that site, including skiing and maintenance of ski facilities, and off-road vehicle use.[1]
References

Federal Register Vol 68, No 26. February 7, 2003.