Psidium

{{Short description|Genus of flowering plants in the family Myrtaceae}} {{For|the thoroughbred racehorse|Psidium (horse)}} {{Automatic taxobox | oldest_fossil = Paleogene | image = Starr 020803-0117 Psidium guajava.jpg | image_caption = Guava (''Psidium guajava'') | display_parents = 2 | taxon = Psidium | authority = L.<ref name="GRIN">{{cite web |url=http://www.ars-grin.gov/cgi-bin/npgs/html/genus.pl?10034 |title=Genus: ''Psidium'' L. |work=Germplasm Resources Information Network |publisher=United States Department of Agriculture |date=2009-01-27 |access-date=2010-03-03}}</ref> |subdivision_ranks = Species |subdivision = ''See text'' |subdivision_ref = <ref name="powo">{{cite web |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:30004423-2 |title=''Psidium'' L. |website=Plants of the World Online |publisher=Royal Botanic Gardens, Kew |year=2026 |access-date=7 March 2026}}</ref> | synonyms = * ''Calyptropsidium'' O.Berg * ''Corynemyrtus'' (Kiaersk.) Mattos * ''Cuiavus'' Trew * ''Episyzygium'' Suess. & A.Ludw. * ''Guajava'' Mill. * ''Guayaba'' Noronha * ''Mitranthes'' O.Berg * ''Mitropsidium'' Burret | synonyms_ref = <ref name = powo/> }}

'''''Psidium''''' is a genus of trees and shrubs in the family Myrtaceae. It is native to warmer parts of the Western Hemisphere (Mexico, Central and South America, the West Indies, and the Galápagos Islands).{{R|powo}} Many of the species bear edible fruits, and for this reason several are cultivated commercially.<ref>{{cite book |title= The Encyclopedia of Fruit and Nuts |editor= Jules Janick, Robert E. Paull |edition= illustrated |publisher= CABI |year= 2008 |isbn= 9780851996387}}</ref> The most popularly cultivated species is the common guava, ''Psidium guajava.''

==Taxonomy== [[File:Leaves of Psidium.jpg|thumb|new leaves of Psidium in West Bengal, India.]] This genus was described first by Linnaeus in 1753.<ref name="LINNAEUS">{{cite book |last1=Linnaeus |first1=Carl |title=Species plantarum |date=1753 |publisher=Laurentii Salvii |location=Stockholm |page=470 |url=https://www.biodiversitylibrary.org/page/358489}}</ref>

Fossils are known from the Paleogene of Patagonia.<ref>{{Cite journal |last=Panti |first=Carolina |date=2016-05-18 |title=Myrtaceae fossil leaves from the Río Turbio Formation (Middle Eocene), Santa Cruz Province, Argentina |url=http://www.tandfonline.com/doi/full/10.1080/08912963.2014.976635 |journal=Historical Biology |language=en |volume=28 |issue=4 |pages=459–469 |doi=10.1080/08912963.2014.976635 |bibcode=2016HBio...28..459P |s2cid=84988707 |issn=0891-2963|hdl=11336/19131 |hdl-access=free |url-access=subscription }}</ref>

==Species== {{As of|2026|03}}, Plants of the World Online accepts the following 70 species:{{R|powo}}

{{columns-list|colwidth=22em| *''Psidium acidum'' {{small|(Mart. ex DC.) Landrum}} *''Psidium acranthum'' {{small|Urb.}} *''Psidium acutangulum'' {{small|DC.}} *''Psidium albescens'' {{small|Urb.}} *''Psidium amplexicaule'' {{small|Pers.}} *''Psidium appendiculatum'' {{small|Kiaersk.}} *''Psidium araucanum'' {{small|Soares-Silva & Proença}} *''Psidium australe'' {{small|Cambess.}} *''Psidium bahianum'' {{small|Landrum & Funch}} *''Psidium brevipedunculatum'' {{small|Tuler & Landrum}} *''Psidium brownianum'' {{small|Mart. ex DC.}} *''Psidium cattleyanum'' {{small|Sabine}} *''Psidium cauliflorum'' {{small|Landrum & Sobral}} *''Psidium decussatum'' {{small|DC.}} *''Psidium densicomum'' {{small|Mart. ex DC.}} *''Psidium firmum'' {{small|O.Berg}} *''Psidium friedrichsthalianum'' {{small|(O.Berg) Nied.}} *''Psidium fulvum'' {{small|McVaugh}} *''Psidium ganevii'' {{small|Landrum & Funch}} *''Psidium glaziovianum'' {{small|Kiaersk.}} *''Psidium grandifolium'' {{small|Mart. ex DC.}} *''Psidium grazielae'' {{small|Tuler & M.C.Souza}} *''Psidium guajava'' {{small|L.}} *''Psidium guayaquilense'' {{small|Landrum & Cornejo}} *''Psidium guineense'' {{small|Sw.}} *''Psidium guyanense'' {{small|Pers.}} *''Psidium harrisianum'' {{small|Urb.}} *''Psidium huanucoense'' {{small|Landrum}} *''Psidium inaequilaterum'' {{small|O.Berg}} *''Psidium itanareense'' {{small|O.Berg}} *''Psidium jacquinianum'' {{small|(O.Berg) Mattos}} *''Psidium kennedyanum'' {{small|Morong}} *''Psidium langsdorffii'' {{small|O.Berg}} *''Psidium laruotteanum'' {{small|Cambess.}} *''Psidium longipetiolatum'' {{small|D.Legrand}} *''Psidium maribense'' {{small|Mart. ex DC.}} *''Psidium minutifolium'' {{small|Krug & Urb.}} *''Psidium misionum'' {{small|D.Legrand}} *''Psidium montanum'' {{small|Sw.}} *''Psidium myrsinites'' {{small|DC.}} *''Psidium myrtoides'' {{small|O.Berg}} *''Psidium nannophyllum'' {{small|Alain}} *''Psidium nummularia'' {{small|(C.Wright ex Griseb.) C.Wright}} *''Psidium nutans'' {{small|O.Berg}} *''Psidium oblongatum'' {{small|O.Berg}} *''Psidium occidentale'' {{small|Landrum & Parra-Os.}} *''Psidium oligospermum'' {{small|Mart. ex DC.}} *''Psidium ovale'' {{small|(Spreng.) Burret}} *''Psidium parvifolium'' {{small|Griseb.}} *''Psidium pedicellatum'' {{small|McVaugh}} *''Psidium pigmeum'' {{small|Arruda}} *''Psidium pulcherrimum'' {{small|Tuler & C.M.Costa}} *''Psidium raimondii'' {{small|Burret}} *''Psidium ratterianum'' {{small|Proença & Soares-Silva}} *''Psidium rhombeum'' {{small|O.Berg}} *''Psidium riparium'' {{small|Mart. ex DC.}} *''Psidium robustum'' {{small|O.Berg}} *''Psidium rostratum'' {{small|McVaugh}} *''Psidium rotundatum'' {{small|Griseb.}} *''Psidium rotundidiscum'' {{small|Proença & Tuler}} *''Psidium rufum'' {{small|Mart. ex DC.}} *''Psidium rutidocarpum'' {{small|Ruiz & Pav. ex G.Don}} *''Psidium salutare'' {{small|(Kunth) O.Berg}} *''Psidium schenckianum'' {{small|Kiaersk.}} *''Psidium sessiliflorum'' {{small|(Landrum) Proença & Tuler}} *''Psidium sobralianum'' {{small|Landrum & Proença}} *''Psidium sorocabense'' {{small|O.Berg}} *''Psidium striatulum'' {{small|DC.}} *''Psidium suffruticosum'' {{small|O.Berg}} *''Psidium urquiolanum'' {{small|Landrum & Z.Acosta}} }}

==References== {{wikispecies}} {{commonscat}} {{Reflist}}

Category:Psidium Category:Myrtaceae genera Category:Botanical taxa named by Carl Linnaeus Category:Flora of the Neotropical realm