Pfeiffera

{{short description|Genus of Cactaceae plants}}

{{Automatic taxobox

|image=Pfeiffera monacantha150183180.jpg

|image_caption=Pfeiffera monacantha

|display_parents=4

|taxon=Pfeiffera

|authority= Salm-Dyck

|subdivision_ranks=Species

|subdivision=See text

|synonyms_ref=

|synonyms=Bolivihanburya Guiggi

|type_species =Pfeiffera ianthothele

}}

Pfeiffera is a genus of flowering plants in the family Cactaceae, found in Bolivia and northwest Argentina. There has been some debate about the circumscription of the genus. It is placed in the tribe Echinocereeae.{{cite journal |title=A phylogenetic analysis of Pfeiffera and the reinstatement of Lymanbensonia as an independently evolved lineage of epiphytic Cactaceae within a new tribe Lymanbensonieae |year=2010 |last1=Korotkova |first1=Nadja |last2=Zabel |first2=Leonie |last3=Quandt |first3=Dietmar |last4=Barthlott |first4=Wilhelm |journal=Willdenowia |volume=40 |issue=2 |pages=151–172 |doi=10.3372/wi.40.40201 |s2cid=83770697 |doi-access=free }}

The genus name of Pfeiffera is in honour of Ludwig Karl Georg Pfeiffer (1805–1877), a German physician, botanist and conchologist.{{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 Cact. Hort. Dyck., edt. 1844 on page 40 in 1845.