View source for Psidium guajava

{{Treatment/ID
|accepted_name=Psidium guajava
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=1: 470. 1753
|year=1753
}}
|common_names=Guava;guayaba
|basionyms=
|synonyms=
|hierarchy=Myrtaceae;Psidium;Psidium guajava
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Myrtaceae]]</div><div class="higher-taxon"><small>genus</small>[[Psidium]]</div><div class="higher-taxon"><small>species</small>[[Psidium guajava]]</div></div>
|volume=Volume 10
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="shrub some measurement;tree some measurement"><b>Shrubs </b>or trees to 8 m;</span> <span class="statement" id="st-d0_s1" data-properties="trunk coloration;trunk coloration;trunk coloration;trunk coloration;trunk coloration;trunk coloration;trunk architecture or pubescence or relief;scale size;scale fragility">trunk light-brown, reddish-brown, or light grayish green, mostly smooth, with large, flaky scales;</span> <span class="statement" id="st-d0_s2" data-properties="twig life cycle;twig coloration;twig architecture;twig architecture;twig life cycle;twig coloration;twig coloration;twig coloration;twig architecture or pubescence or relief;twig architecture or pubescence">young twigs green, quadrangular, slightly to strongly winged, often sulcate, at least when dry, older twigs reddish-brown to grayish green, smooth or scaly;</span> <span class="statement" id="st-d0_s3" data-properties="growth life cycle;growth pubescence;growth pubescence;growth pubescence;hair coloration;hair coloration;hair coloration;hair coloration;hair coloration;hair some measurement">young growth glabrate to densely appressed-pubescent, hairs whitish, yellowish, or silvery, to ca. 0.7 mm.</span> <span class="statement" id="st-d0_s4" data-properties="petiole shape;petiole length;petiole width;petiole pubescence;petiole pubescence;petiole pubescence"><b>Leaves:</b> petiole channeled, 2–5 × 1–2 mm, densely pubescent to glabrate;</span> <span class="statement" id="st-d0_s5" data-properties="blade coloration;blade coloration;blade coloration;blade coloration;blade coloration;blade coloration;blade shape;blade shape;blade shape;blade shape;blade shape;blade shape;blade shape;blade length;blade width;blade l w ratio;blade texture;blade texture;blade texture;midvein prominence;midvein prominence;lateral-vein quantity;lateral-vein prominence;lateral-vein orientation;lateral-vein course;lateral-vein course;smaller vein architecture or coloration or relief;ladder shape;base shape;base shape;base shape;apex shape;apex shape;apex shape;apex shape;apex shape;surface pubescence;surface pubescence">blade drying yellowish green, grayish green, or reddish-brown, elliptic, oblong, elliptic-oblanceolate, elliptic-obovate, or lanceolate, 4.5–14 × 2.4–7.5 cm, 1.6–3.8 times as long as wide, leathery to submembranous, midvein prominent abaxially, impressed adaxially, lateral-veins 9–22 pairs, prominent, ascending (at ca. 45°), nearly straight, curving upward near margin and connecting with next lateral-vein, smaller veins connecting laterals in ladderlike to reticulate pattern, base rounded to slightly cordate, apex acute, acuminate, or rounded, surfaces densely to sparsely appressed-pubescent abaxially, glabrate adaxially (except midvein puberulent).</span> <span class="statement" id="st-d0_s6" data-properties="peduncle length;peduncle width;peduncle shape"><b>Peduncles </b>1–3.5 cm × 1–1.5 mm, terete.</span> <span class="statement" id="st-d0_s7" data-properties="inflorescence architecture;inflorescence architecture"><b>Inflorescences </b>1-flowered or 3-flowered, borne in leaf-axils;</span> <span class="statement" id="st-d0_s8" data-properties="bracteole shape;bracteole some measurement;bracteole pubescence">bracteoles linearto narrowly triangular, 2–5 mm, sparsely pubescent.</span> <span class="statement" id="st-d0_s9" data-properties="bud shape;bud shape;bud shape;bud some measurement;bud size;apex shape"><b>Flowers:</b> bud subfusiform to pyriform, 10–17 mm, sometimes strongly constricted near midpoint, apex usually conic;</span> <span class="statement" id="st-d0_s10" data-properties="summit shape;summit quantity;flower bud condition">hypanthium to summit of ovary obconic, ca. 1/2 as long as closed flower bud;</span> <span class="statement" id="st-d0_s11" data-properties="calyx condition;calyx architecture;calyx duration;calyx life cycle;part quantity">calyx closed, conicin bud, tearing irregularly as bud opens, persisting or falling in ca. 3 parts;</span> <span class="statement" id="st-d0_s12" data-properties="petal shape;petal shape;petal shape;petal some measurement">petals obovate to elliptic, 13–22 mm;</span> <span class="statement" id="st-d0_s13" data-properties="disc some measurement">disc 4–6 mm across;</span> <span class="statement" id="st-d0_s14" data-properties="stamen quantity;stamen some measurement">stamens 280–720,7–15 mm;</span> <span class="statement" id="st-d0_s15" data-properties="anther some measurement">anthers 0.7–1 mm;</span> <span class="statement" id="st-d0_s16" data-properties="style some measurement">style 10–15 mm;</span> <span class="statement" id="st-d0_s17" data-properties="stigma width">stigma ca. 0.5 mm wide;</span> <span class="statement" id="st-d0_s18" data-properties="ovary architecture or structure in adjective form">ovary 3–6-locular;</span> <span class="statement" id="st-d0_s19" data-properties="ovule quantity">ovules 90–180 per locule (multiseriate).</span> <span class="statement" id="st-d0_s20" data-properties="berry odor;berry coloration;berry coloration;berry shape;berry shape;berry atypical some measurement;berry some measurement;flesh coloration;flesh coloration"><b>Berries </b>aromatic, green or yellow, with pink or white flesh inside, globose or pyriform, 20–60 (–80) mm.</span> <span class="statement" id="st-d0_s21" data-properties="seed quantity;seed shape;seed some measurement;seed architecture or pubescence or relief"><b>Seeds </b>usually 50+, subreniform,3–4 mm, ± smooth.</span><!--

-->{{Treatment/Body
|phenology=Flowering spring.
|habitat=Roadsides, pastures, riparian areas.
|elevation=0–100 m.
|distribution=Fla.;La.;South America;also in tropics and subtropics worldwide
|introduced=true
|discussion=<p>Psidium guajava is known in the flora area from the central and southern peninsula in Florida and Jefferson Parish in Louisiana.</p><!--
--><p>Psidium guajava is commonly and widely cultivated for its edible fruit. It probably was originally cultivated in tropical South America. Archaeological evidence of guava cultivation has been reported for coastal Peru at about 4000 years ago (R. Shady-Solis et al. 2001) and even earlier in Rondônia, Brazil (J. Watling et al. 2018). In Central America and Mexico, the earliest archaeological find of P. guajava is about 2000 years old in the Tehuacán Valley of Mexico (C. E. Smith 1965). It reached the Caribbean Islands in pre-Columbian times (G. Fernández de Oviedo y Valdéz 1851). How much of the American distribution, which now extends from Mexico to Argentina, is due to the actions of humans is uncertain. In post-Columbian times it was rapidly spread to the tropical and subtropical regions around the world. Guava products are imported into the United States mainly from Brazil, Dominican Republic, Egypt, Mexico, Philippines, Taiwan, and Thailand. The leaves and bark are commonly used medicinally as a tea to remedy diarrhea.</p><!--
--><p>Psidium guineense Swartz, common in tropical and subtropical America, is a similar weedy species that is often confused with P. guajava. One specimen collected at Bradenton, Florida, in 1916 has been seen; it may be expected in the southeastern United States. Psidium guineense differs from P. guajava in having leaves with fewer lateral veins, usually erect, reddish brown (not appressed and whitish) hairs on the abaxial surfaces, anthers 1–3 mm, and a calyx that tears in usually five (not three) segments.</p>
|tables=
|references=
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-->{{#Taxon:
name=Psidium guajava
|authority=Linnaeus
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Myrtaceae
|phenology=Flowering spring.
|habitat=Roadsides, pastures, riparian areas.
|elevation=0–100 m.
|distribution=Fla.;La.;South America;also in tropics and subtropics worldwide
|introduced=true
|reference=None
|publication title=Sp. Pl.
|publication year=1753
|special status=
|source xml=
|genus=Psidium
|species=Psidium guajava
|anther some measurement=0.7mm;1mm
|apex shape=conic;rounded;acuminate;rounded;acuminate;acute
|base shape=rounded;slightly cordate
|berry atypical some measurement=60mm;80mm
|berry coloration=yellow;green
|berry odor=aromatic
|berry shape=pyriform;globose
|berry some measurement=20mm;60mm
|blade coloration=reddish-brown;grayish green;reddish-brown;grayish green;yellowish green;drying
|blade l w ratio=1.6-3.8
|blade length=4.5cm;14cm
|blade shape=lanceolate;elliptic-obovate;lanceolate;elliptic-obovate;elliptic-oblanceolate;oblong;elliptic
|blade texture=leathery;submembranous
|blade width=2.4cm;7.5cm
|bracteole pubescence=pubescent
|bracteole shape=triangular
|bracteole some measurement=2mm;5mm
|bud shape=subfusiform;pyriform
|bud size=constricted
|bud some measurement=10mm;17mm
|calyx architecture=open
|calyx condition=closed
|calyx duration=persisting
|calyx life cycle=falling
|disc some measurement=4mm;6mm
|flesh coloration=white;pink
|flower bud condition=closed
|growth life cycle=young
|growth pubescence=glabrate;densely appressed-pubescent
|hair coloration=silvery;yellowish;silvery;yellowish;whitish
|hair some measurement=0mm;0.7mm
|inflorescence architecture=3-flowered;1-flowered
|ladder shape=like
|lateral-vein course=curving;straight
|lateral-vein orientation=ascending
|lateral-vein prominence=prominent
|lateral-vein quantity=9;22
|midvein prominence=impressed;prominent
|ovary architecture or structure in adjective form=3-6-locular
|ovule quantity=90;180
|part quantity=3
|peduncle length=1cm;3.5cm
|peduncle shape=terete
|peduncle width=1mm;1.5mm
|petal shape=obovate;elliptic
|petal some measurement=13mm;22mm
|petiole length=2mm;5mm
|petiole pubescence=densely pubescent;glabrate
|petiole shape=channeled
|petiole width=1mm;2mm
|scale fragility=flaky
|scale size=large
|seed architecture or pubescence or relief=smooth
|seed shape=subreniform
|seed some measurement=3mm;4mm
|shrub some measurement=0m;8m
|smaller vein architecture or coloration or relief=reticulate
|stamen quantity=280;720
|stamen some measurement=7mm;15mm
|stigma width=0.5
|style some measurement=10mm;15mm
|summit quantity=1/2
|summit shape=obconic
|surface pubescence=glabrate;appressed-pubescent
|tree some measurement=0m;8m
|trunk architecture or pubescence or relief=smooth
|trunk coloration=green;light grayish;reddish-brown;light grayish;reddish-brown;light-brown
|twig architecture=sulcate;winged
|twig architecture or pubescence=scaly
|twig architecture or pubescence or relief=smooth
|twig coloration=reddish-brown;grayish green
|twig life cycle=older;young
}}<!--

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