Pourthiaea

{{Automatic taxobox

|image = Pourthiaea villosa - Miyajima Natural Botanical Garden - DSC02336.JPG

|image_caption = Pourthiaea villosa, Miyajima Natural Botanical Garden, Japan

|display_parents = 3

|taxon = Pourthiaea

|authority = Decne.

|subdivision_ranks = Species

|}}

Pourthiaea is a genus of plants in the rose family (Rosaceae).{{cite web |title=Pourthiaea Decne. {{!}} Plants of the World Online {{!}} Kew Science |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:33978-1 |website=Plants of the World Online |access-date=19 November 2021 |language=en}}

Its native range is East Asia and Indo-China. It is found in the regions of Assam, Bangladesh, (north-central, south-central and southeastern) China, East Himalaya, Japan, Korea, Laos, Myanmar, Taiwan, Thailand, Tibet and Vietnam.

It was later introduced into the American states of Connecticut, Delaware, District of Columbia, New Hampshire, New Jersey, New York, Ohio, Pennsylvania and Washington.

The genus name of Pourthiaea is in honour of J. A. Pourthié (1830–1866), a French clergyman and also missionary in Korea.{{cite book | last=Burkhardt | first=Lotte | title=Verzeichnis eponymischer Pflanzennamen – Erweiterte Edition |trans-title=Index of Eponymic Plant Names – Extended Edition | publisher=Botanic Garden and Botanical Museum, Freie Universität Berlin | year=2018 | isbn=978-3-946292-26-5 | url=https://doi.org/10.3372/epolist2018 |format=pdf |language=German |location=Berlin | doi=10.3372/epolist2018 |access-date=1 January 2021}}

It was first described and published in Nouv. Arch. Mus. Hist. Nat. Vol.10 on page 146 in 1874.