Sedum stenopetalum, also known as wormleaf stonecrop or narrow-petaled stonecrop, is a species of flowering plant in the stonecrop family. It is native to western North America from British Columbia and Alberta to northern California to Wyoming. It can be found in many types of rocky habitat, such as cliffs, talus, and steep ridges. It is a succulent plant producing mats or clumps of lance-shaped, linear, or three-lobed leaves each under 2 centimeters long. The inflorescence is a short, erect array of one to many flowers with lance-shaped petals up to a centimeter long. The petals are yellow, sometimes with red veins.
Taxonomy Sedum stenopetalum is classified in the Sedum genus in the family Crassulaceae. It was scientifically described and named by Frederick Traugott Pursh in 1813.
Subspecies and varieties The species has two accepted subspecies and one accepted variety.
Sedum stenopetalum subsp. ciliosum Subspecies ciliosum was first described by Thomas Jefferson Howell as a species named Sedum ciliosum in 1898. It was reclassified as a subspecies by Robert Theodore Clausen in 1948. It only grows in the state of Oregon.
Sedum stenopetalum var. monanthum Variety monanthum was initially described as a species in 1898 by Thomas Howell, but with the illegitimate name Sedum uniflorum. It was then described by Wilhelm Nikolaus Suksdorf in 1927, again as a species, but this time with the name Sedum monanthum. It was reclassified as a variety of Sedum stenopetalum under its present name by Hideaki Ohba in 2007.
Sedum stenopetalum subsp. stenopetalum The autonymic subspecies grows in western Canada and the northwestern United States.
Synonyms Sedum stenopetalum has synonyms of the species or one of its subspecies or variety.
Table of Synonyms Name Year Rank Synonym of: Notes Amerosedum radiatum subsp. ciliosum 1985 species subsp. ciliosum ≡ hom. Amerosedum stenopetalum 1985 species S. stenopetalum ≡ hom. Amerosedum stenopetalum subsp. monanthum 1985 species var. monanthum ≡ hom. Sedum ciliosum 1898 species subsp. ciliosum ≡ hom. Sedum coerulescens 1825 species subsp. stenopetalum = het. Sedum douglasii 1832 species subsp. stenopetalum = het. Sedum douglasii subsp. ciliosum 1946 subspecies subsp. ciliosum ≡ hom. Sedum douglasii var. monanthum 1935 variety var. monanthum ≡ hom. Sedum douglasii var. uniflorum 1910 variety var. monanthum ≡ hom. Sedum douglasii f. uniflorum 1936 form var. monanthum ≡ hom. Sedum monanthum 1927 species var. monanthum ≡ hom. Sedum radiatum subsp. ciliosum 1975 subspecies subsp. ciliosum ≡ hom. Sedum radiatum var. ciliosum 2007 variety subsp. ciliosum ≡ hom. Sedum stenopetalum subsp. monanthum 1975 subspecies var. monanthum ≡ hom. Sedum stenopetalum subsp. typicum 1948 subspecies S. stenopetalum ≡ hom. not validly publ. Sedum stenophyllum 1943 species subsp. stenopetalum = het. Sedum subclavatum 1831 species subsp. stenopetalum = het. Sedum uniflorum 1898 species var. monanthum ≡ hom. nom. illeg. Notes: ≡ homotypic synonym; = heterotypic synonym
Names It is known by the common names wormleaf stonecrop or narrow-petaled stonecrop.
References
External links
Jepson Manual Treatment USDA Plants Profile Flora of North America Washington Burke Museum Photo gallery