Psidium
Psidium est genus arborum et fruticum familiae Myrtacearum, qui in calidioribus hemisphaerii occidentalis regionibus inveniuntur, praecipue in Mexico et America Media Australique, Indis Occidentalibus, Insulis Galapagensibus, et meridianis Civitatibus Foederatis. Folia sunt opposita vel subalternata, pelludicis punctis glandulosis notata.

Taxinomia
Hoc genus primum a Carolo Linnaeo anno 1753 descriptum est. Multae species fructus edules ferunt, qua pro causa nonnullae pro commercio coluntur. Species culta populo gratissima est Psidium guajava.

Species
Generi sunt paene centum species descriptae.
 Psidium acidum - Peruvia, Aequatoria
 Psidium acranthum - Respublica Dominicana
 Psidium acunae - Cuba
 Psidium acutangulum - a Columbia ad Amapaensem et Bolivia
 Psidium albescens - Iamaica
 Psidium amplexicaule - Portus Dives, Insulae sub Vento
 Psidium apiculatum - Bahia
 Psidium appendiculatum - Venetiola septentrionalis, Brasilia septentrionlis et orientalis
 Psidium araucanum - Paulopolitana et Paranensis civitates Brasiliae
 Psidium arboreum - Civitas Fluminensis civitas Brasiliae
 Psidium australe - Venetiola,, Guiana, Bolivia, Brasilia, Paraquaria
 Psidium bahianum - Bahia
 Psidium balium - Cuba
 Psidium brevifolium - Respublica Dominicana
 Psidium brownianum - Venetiola, Brasilia septentrionalis et orientalis
 Psidium calyptranthoides - Portus Dives
 Psidium canum - Brasilia
 Psidium cattleianum - Brasilia, Uruquaria
 Psidium cauliflorum - Bahia
 Psidium celastroides - Cuba
 Psidium claraense - Cuba
 Psidium cymosum - Cuba
 Psidium densicomum - Venetiola, Guiana, Bolivia, Brasilia septentrionalis et occidentalis, Peruvia, Columbia
 Psidium dictyophyllum - Hispaniola
 Psidium donianum - Maragnanensis 
 †Psidium dumetorum - Iamaica sed exstinctum
 Psidium eugenii - Brasilia australis et orientalis
 Psidium firmum - Brasilia
 Psidium friedrichsthalianum - Mexicum meridianum, America Media, Columbia, Venetiola
 Psidium fulvum - Peruvia
 Psidium galapageium - Insulae Galapagenses
 Psidium ganevii - Bahia
 Psidium giganteum - Civitas Minarum Generalium, Paulopolitana
 Psidium glaziovianum - Brasilia australis et orientalis
 Psidium globosum - Uruquaria
 Psidium grandifolium - Brasilia, Bolivia, Paraguaia, Argentina septentrionalis et orientalis
 Psidium grazielae -  Civitas Spiritus Sancti et Civitas Fluminensis
 Psidium guajava - America Media et Australis, Indi Occidentales, Mexicum, Florida, Ludoviciana, Arizona; in regionibus Africae, Asiae Meridianae, et Asiae Meridiorientalis; atque in Havaiis et multis aliis insulis oceanicis naturalizatum
 Psidium guineense - America Media et Australis, Insulae ad Ventum Conversae, Mexicum
 Psidium guyanense - Brasilia septentrionalis, Venetiola, Guiana Francica
 Psidium haitiense - Haitia
 Psidium harrisianum - iamaica
 Psidium × hasslerianum - Paraguaia, America Media
 Psidium hotteanum - Massif de la Hotte
 Psidium huanucoense - Regio Huánuco
 Psidium inaequilaterum - Brailia australis et orientalis
 Psidium itanareense - Paulopolitana
 Psidium jacquinianum - locus ignotus
 Psidium jakucsianum - Cuba
 Psidium kennedyanum - Brasilia, Paraguaia, Argentina septentrionalis et orientalis
 Psidium langsdorffii - Civitas Minarum Generalium
 Psidium laruotteanum - a Costarica ad Paraguaiam
 Psidium longipetiolatum - Brasilia australis
 Psidium lourteigiae - Brasilia
 Psidium loustalotii - Cuba
 Psidium maribense - Columbia, Venetiola, Brasilis septentroinalis
 Psidium minutifolium - Cuba
 Psidium misionum - Paraguaia, Provincia Missionum Argentinae
 Psidium montanum - Iamaica
 Psidium munizianum - Cuba
 Psidium myrsinites - Brasilia
 Psidium myrtoides - Brasilia
 Psidium nannophyllum - Respublica Dominicana
 Psidium navasense - Cuba
 Psidium nummularia - Cuba
 Psidium nutans - Brasilia, Argentina septentrionalis et orientalis
 Psidium oblongatum - Civitas Minarum Generalium, Civitas Spiritus Sancti
 Psidium oblongifolium - Brasilia australis et orientalis
 Psidium occidentale - Columbia et Aequatoria
 Psidium oligospermum - Civitas Minarum Generalium, Parahyba 
 Psidium oncocalyx - Bahiensis
 Psidium orbifolium - Cuba
 Psidium ovale - Civitas Minarum Generalium, Cathariniana
 Psidium parvifolium - Cuba
 Psidium pedicellatum - Columbia,Aequatoria
 Psidium pigmeum - Brasilia australis et orientalis
 Psidium raimondii - Peruvia
 Psidium ramboanum - Matogrossensis
 Psidium ratterianum - Brasília 
 Psidium refractum - Goiasensis
 Psidium reptans - Paranensis
 Psidium reversum - Sierra Sagua Baracoa in Cuba
 Psidium rhombeum - Bahiensis
 Psidium riparium - Brasilia
 Psidium robustum - Maragnanensis, Civitas Minarum Generalium, Paulopolitana
 Psidium rostratum - Peruvia
 Psidium rotundatum - Cuba
 Psidium rufum - Brasilia
 Psidium rutidocarpum - Peruvia
 Psidium salutare - America Media et Australis, Indi Occidentales, Mexicum meridianum
 Psidium sartorianum  - America Media et Australis, Indi Occidentales, Mexicum
 Psidium schenckianum - Brasilia orientalis
 Psidium scopulorum - Cuba
 Psidium sessilifolium - Respublica Dominicana
 Psidium sintenisii - Portus Dives
 Psidium sorocabense - Brasilia australis et orientalis
 Psidium striatulum  -Brasilia, Venetiola, Guiana, Surinamia
 Psidium tenuirame - Cuba
 Psidium trilobum - Massif du Nord in Haitia

Notae

Bibliographia
Ali, Md. Harun, Md. Ali Akbar, et Md. Abul Bashar. 1986.  An economic study on guava cultivation in some selected areas of Bangladesh. Mymensingh : Bureau of Socio-economic Research and Training, Bangladesh Agricultural University.
Carlos Tuler, Amélia, Marcelo da Costa Souza, Tatiana Tavares Carrijo, et Ariane Luna Peixoto. 2017. "A new cauliflorous species of Psidium (Myrtaceae) from the Atlantic Forest." Phytotaxa 27 (1): 77–82.
Gerakas, Andrew J., et Calvin Lee. 1974. Profit potentials in Hawaii's guava: feasibility of expanded fruit-juice and fruit-drink manufacture in Hawaii (with emphasis on guava). Honolulu: Department of Planning and Economic Development, State of Hawaii.
Landrum, Leslie. 2008. "Two New Species of Psidium (Myrtaceae) from Bahia, Brazil." Novon A Journal for Botanical Nomenclature 18 (Februarius): 74-77. doi:10.3417/2006061.
Landrum, Leslie, et Carlos Parra-O. 2014. "A new species of Psidium (Myrtaceae) from Ecuador and Colombia." Brittonia 66, no. 4 (December): 311-315. doi:10.1007/s12228-014-9335-3.
Landrum, Leslie R., et M. L. Kawasaki. 1997. "The genera of Myrtaceae in Brazil: an illustrated synoptic treatment and identification keys." Brittonia 49: 508–36.
Landrum, Leslie R., et W. P. Sharp. 1989. "Characters of Some American Myrtinae (Myrtaceae): Psidium and Related Genera." Systematic Botany 14 (3): 370–376. Editio interretialis.
Landrum, Leslie R., et M. Sobral. 2006. "Psidium cauliflorum (Myrtaceae), a new species from Bahia, Brazil." SIDA: Contributions to Botany 22: 927–29. Editio interretialis.
Lim, Tong Kwee, et Khoo Khay Chong. 1990. Guava in Malaysia: production, pests, and diseases. Kuala Lumpur: Tropical Press.
Mitra, Sisir, ed. 2021. Guava: botany, production and uses. Bostoniae: CAB International. ISBN 9781789247046 (epub), ISBN 9781789247039 (ebook).
Murphy, Albert, ed. 2017. Guava: cultivation, antioxidant properties and health benefits. Novi Eboraci: Novinka. ISBN 1536107670, ISBN 9781536107678.
Oliveira, Elaine F., et al. 2017. "Leaf morphology and venation of Psidium species from the Brazilian Savanna." Revista Brasileira de Farmacognosia 27: 407–13. Editio interretialis. 
Shigeura, Gordon Tokiyoshi, et Richard M. Bullock. 1983. Guava (Psidium guajava L.) in Hawaii: history and production. Honolulu: Hawaii Institute of Tropical Agriculture and Human Resources, College of Tropical Agriculture and Human Resources, University of Hawaii at Manoa.
Soares-Silva, L. H., et C. E. B. Proença. 2008. "A new species of Psidium L. (Myrtaceae) from southern Brazil." Botanical Journal of the Linnean Society 158 (1): 51–54. https://doi.org/10.1111/j.1095-8339.2008.00727.x Editio interretialis.]
Terezinha Lopes Pereira Peres, Marize, et al. 2011. "Phytotoxic and antioxidant activity of seven native fruits of Brazil." Acta Botanica Brasilica 27: 836-46. Editio interretialis.
Todorov, Svetoslav Dimitrov, et Cristina Stewart Bogsan, eds. 2016. Tropical fruits: from cultivation to consumption and health benefits: guava and mango.'' Novi Eboraci: Nova Science. ISBN 9781634846820 (epub).

Nexus externi

Psidium ScienceDirect.
Psidium. The Plant List: A working list of all plant species.

Genera plantarum
 
Taxa Linnaei
Taxa 1753