Leptarrhena

{{Short description|Genus of plants}}

{{Speciesbox

| image = Leather leaf (Leptarrhena pyrolifolia) (8051428095).jpg

| image_caption =

| genus = Leptarrhena

| parent_authority = R.Br. (1820)

| species = pyrolifolia

| authority = (D.Don) Ser. (1830)

| synonyms = *Saxifraga coriacea {{small|Fisch. ex Ser. (1830), not validly publ.}}

• Saxifraga micrantha {{small|Fisch. ex Ser. (1830), not validly publ.}}
• Saxifraga parviflora {{small|Fisch. ex Cham. (1831), not validly publ.}}
• Saxifraga pyrolifolia {{small|D.Don (1822)}} (basionym)
• Saxifraga secunda {{small|Willd. ex Cham. (1827), not validly publ.}}

| synonyms_ref = {{cite web |title=Leptarrhena pyrolifolia (D.Don) Ser. {{!}} Plants of the World Online {{!}} Kew Science |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:1044149-2 |website=Plants of the World Online |access-date=13 April 2024|language=en}}

}}

Leptarrhena pyrolifolia is a species of flowering plants belonging to the family Saxifragaceae. It is the sole species in genus Leptarrhena.{{cite web |title=Leptarrhena R.Br. {{!}} Plants of the World Online {{!}} Kew Science |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:30392102-2 |website=Plants of the World Online |access-date=13 April 2024|language=en}}

It is a perennial or rhizomataceous geophyte native to northwestern North America, from subarctic Alaska and the Northwest Territories to the northwestern United States.