Myrtaceae Juss.
  • Gen. Pl. 322–323. 1789. (4 Aug 1789)


Cite taxon page as 'WFO (2020): Myrtaceae Juss. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-7000000404. Accessed on: 27 Oct 2020'

General Information

Trees or shrubs, evergreen, usually with essential oils-containing cavities in foliage, branchlets, and flowers. Stipules absent or small and caducous. Leaves opposite, occasionally alternate, occasionally ternate or pseudo-whorled; leaf blade with secondary veins pinnate or basal, often with intramarginal veins near margin, margin usually entire. Inflorescences axillary or terminal, cymose but variously arranged, 1- to many-flowered. Flowers bisexual, sometimes polygamous, actinomorphic. Hypanthium usually adnate to ovary and prolonged above it. Calyx lobes (3 or)4 or 5 or more, distinct or connate into a calyptra. Petals 4 or 5, sometimes absent, distinct or connate into a calyptra, sometimes coherent and pseudocalyptrate. Stamens usually numerous, in 1 to several whorls; filaments distinct or connate into 5 bundles opposite petals; anthers 2-celled, dorsifixed or basifixed, dehiscing longitudinally or rarely terminally; connectives usually terminating in 1 or more apical glands. Ovary inferior, semi-inferior, or very rarely superior, carpels 2 to more, locules 1 to many, pseudoseptum sometimes present, placentation usually axile but occasionally parietal; ovules 1 to several per locule. Style single; stigma single. Fruit a capsule, berry, drupaceous berry, or drupe, 1- to many-seeded. Seeds without endosperm or endosperm sparse and thin; testa cartilaginous or thinly membranous, sometimes absent; embryo straight or curved.

  • Provided by: [D].Flora Of CHina @ efloras.org
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    Morphology

    Leaves simple, mostly entire, opposite or rarely alternate, glandular-punctate; stipules 0 or rarely very small

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    Flowers mostly actinomorphic, hermaphrodite or polygamous by abortion

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    Trees or shrubs

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    Calyx-tube more or less adnate to the ovary; lobes 3 or more, imbricate or valvate or irregularly split

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    Petals 4–5, rarely 6 or 0, inserted on the margin of the disk lining the calyx-tube, imbricate or connivent in a mass

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    Stamens numerous, rarely few, inserted on the margin of the disk, 1- or more-seriate, indexed in bud or twice folded or straight; filaments free or connate at the base into a short tube or in bundles opposite the petals; anthers small, 2-celled, opening lengthwise by slits or rarely by apical pores, the connective often tipped by a gland

  • Provided by: [C].Plants Of the World Online Portal - FWTA
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    Ovary inferior, syncarpous, 1- to many-celled, with mostly axile, rarely parietal placentas; ovules rarely solitary or few

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    Fruit inferior, loculicidally dehiscent or indehiscent

  • Provided by: [C].Plants Of the World Online Portal - FWTA
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    Seeds with no (or very little) endosperm; embryo straight, incurved, circular or spiral

  • Provided by: [C].Plants Of the World Online Portal - FWTA
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    Flowers mostly regular, hermaphrodite or unisexual, solitary or in simple to complex inflorescences; bracteoles often present

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    Leaves simple, predominantly opposite, often coriaceous, mostly entire, glandular-punctate; stipules absent or very reduced

  • Provided by: [B].Plants Of the World Online Portal - FTEA
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    Trees, shrubs or occasionally pyrophytic subshrubs with massive rootstocks; usually evergreen; pith with internal phloem

  • Provided by: [B].Plants Of the World Online Portal - FTEA
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    Hypanthium (“calyx-tube”) ± adnate to the ovary; lobes 3–6(–10), imbricate, valvate, splitting irregularly or forming an operculum

  • Provided by: [B].Plants Of the World Online Portal - FTEA
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    Petals 4–5(–6) or rarely absent, included on the margin of the disc lining the calyx-tube, imbricate or forming an operculum

  • Provided by: [B].Plants Of the World Online Portal - FTEA
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    Stamens numerous, rarely only 4, 5 or 10, included on the disc margin in 1 or more rows, straight, inflexed or twice folded in bud; filaments free or connate at the base into a short tube or in 4–5 bundles opposite the petals; anthers small, 2-locular, opening by slits or less often by apical pores; connective sometimes tipped by a gland

  • Provided by: [B].Plants Of the World Online Portal - FTEA
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    Ovary inferior or ± superior, (1–)2–5(–16)-locular with axile or rarely parietal placentation; ovules (1–)2–many, anatropous to campylotropous; style terminal (absent in one genus)

  • Provided by: [B].Plants Of the World Online Portal - FTEA
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    Fruit a berry or capsule (less often a drupe or nut), (1–)few(–many)-seeded, indehiscent or loculicidally dehiscent

  • Provided by: [B].Plants Of the World Online Portal - FTEA
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    Seeds without or with very little endosperm; embryo straight, incurved, circular or spiral

  • Provided by: [B].Plants Of the World Online Portal - FTEA
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    Leaves usually opposite or subopposite, rarely alternate, ternate, or in fours, simple, entire, often coriaceous, pellucid-punctate

  • Provided by: [A].Plants Of the World Online Portal - FZ
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    Stipules absent

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    Inflorescence axillary or terminal, paniculate, thyrsoid, umbellate, cymose, racemose, or flowers solitary or fasciculate

  • Provided by: [A].Plants Of the World Online Portal - FZ
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    Flowers mostly bisexual, sometimes unisexual by abortion, actinomorphic, partly or completely epigynous

  • Provided by: [A].Plants Of the World Online Portal - FZ
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    Trees, shrubs or rhizomatous, geoxylic suffrutices

  • Provided by: [A].Plants Of the World Online Portal - FZ
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    Petals (0)4–5, imbricate, free or coherent to form a calyptra or fused to form an operculum, often with punctate glands

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    Sepals (0)4–5, often persistent, rarely accrescent, sometimes fused to form an operculum, often with punctate glands

  • Provided by: [A].Plants Of the World Online Portal - FZ
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    Seeds 1 to many per locule; endosperm absent or scanty; embryo straight or incurved

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    Ovary inferior or half-inferior, with (1)2–5(10) locules; septa sometimes incomplete; placentation axile or parietal and then often with deeply intruded placentae; ovules 1 to numerous per locule or placenta; style 1, punctiform, capitate, funnel-shaped or shallowly 2–3-lobed at the apex

  • Provided by: [A].Plants Of the World Online Portal - FZ
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    Fruit a berry, drupe or loculicidal capsule which only dehisces near the apex, rarely nut-like and indehiscent

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    Stamens usually numerous, free or basally connate; filaments often coiled or folded in the bud; anthers basifixed or dorsifixed, connective sometimes with an apical gland

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    Included Genus

     Information From

    Plants Of the World Online Portal - FZ
    https://www.kew.org/science/who-we-are-and-what-we-do/strategic-outputs-2020/plants-of-the-world-online
    http://www.plantsoftheworldonline.org/terms-and-conditions
    • A
    Plants Of the World Online Portal - FTEA
    https://www.kew.org/science/who-we-are-and-what-we-do/strategic-outputs-2020/plants-of-the-world-online
    http://www.plantsoftheworldonline.org/terms-and-conditions
    • B
    Plants Of the World Online Portal - FWTA
    https://www.kew.org/science/who-we-are-and-what-we-do/strategic-outputs-2020/plants-of-the-world-online
    http://www.plantsoftheworldonline.org/terms-and-conditions
    • C The Trustees of the Royal Botanic Gardens, Kew
    Flora Of CHina @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=2
    'Flora of China @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=2 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • D Missouri Botanical Garden
    Myrtaceae
    World Flora Online Data. 2017.
    • E CC0 1.0 Universal (CC0 1.0).
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • F CC0 1.0 Universal (CC0 1.0).