Trema Lour.
  • Fl. Cochinch. 2: 539, 562–563. 1790. (Sept 1790)


Cite taxon page as 'WFO (2020): Trema Lour. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-4000038807. Accessed on: 26 Jan 2020'

General Information

5. Trema Lour.

Sponia Comm. ex Decne.

Por M.Nee.

Árboles o arbustos, inermes, monoicos, dioicos o polígamos,generalmente con pelosidad áspera. Hojas alternas, generalmente dísticas,enteras o serradas, 3-palmatinervias en la base, pinnatinervias hacia arriba.Inflorescencias axilares, cimosas, fasciculadas o las flores solitarias. Floresestaminadas y bisexuales; cáliz (4-)5-lobado cerca de la base; estambres tantoscomo los sépalos y opuestos a estos; ovario 1-locular, estilos 2, ramificadosdesde la base. Frutos en drupas pequeñas, ovoides o casi globosas, el exocarposuculento; embrión curvo; cotiledones delgados. Aprox. 35 spp. Ampliamentedistribuidas en los trópicos y subtrópicos.

Un género muy complicado desde el punto de vista taxonómico.Se encuentra entre las especies secundarias y de pastizales más cosmopolitas.En Mesoamérica es mayor la diferencia entre las dos variedades de Trema micrantha que entre estay T. integerrima.

  • Provided by: [G].Flora Mesoamericana
    • Source: [
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    TREMA Lour.

    Arboles o arbustos inermes; plantas monoicas, dioicas o poligamodioicas. Hojas alternas, generalmente dísticas, pinnatinervias o palmatinervias, serradas o enteras, generalmente oblicuas en la base; estípulas laterales, apareadas. Inflorescencias axilares, cimosas, fasciculadas o solitarias; flores perfectas o unisexuales; sépalos 4–5, unidos en la base; estambres en igual número que y opuestos a los sépalos, filamentos cortos y erectos, anteras introrsas; ovario sésil, 1-locular, estilos unidos cerca de la base; flores masculinas con pistilodio pequeño; flores femeninas sin estaminodios. Fruto una drupa ovoide a globosa, pequeña, con el estilo persistente, exocarpo suculento y endocarpo duro.

    Género con 35 especies subtropicales y tropicales; 2 especies se encuentran en Nicaragua.

  • Provided by: [B].Flora de Nicaragua
    • Source: [
    • 9
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    Bisexual or monoecious trees or tall shrubs. Leaves alternate, distichous, more or less inequilateral, mostly serrate, shortly petiolate; stipules lateral. Inflorescences solitary, cymose or fasciculate. Bisexual flowers: sepals 4-5, connate at the base; stamens as many as and opposite the calyx lobes, anther dehiscence introrse; ovary sessile, 1-locular, the styles connate below. Staminate flowers with rudimentary pistil. Pistillate flowers without staminodes. Fruit a small ovoid or subglobose drupe with persistent styles, the embryo curved, the cotyledons falcate, thick.

  • Provided by: [C].Flora de Panama
    • Source: [
    • 10
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    Morphology

    Trees or shrubs, monoecious or dioecious, unarmed.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
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    Leaves alternate, penninerved, petiolate, unequal-sided at the base, serrate; stipules lateral, paired, free, caducous.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Fruits small, endocarp hard.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Ovary sessile, 1-locular; styles short, unbranched, divaricate or inrolled, persistent.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Sepals (4)5, shortly united at the base, induplicate-valvate in male buds, and imbricate in female buds.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Inflorescences axillary, cymose, often branched, usually congested, mainly male with female and bisexual flowers fewer and borne towards the apex.

  • Provided by: [D].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Inflorescences usually congested axillary cymes with ♂ and ♀ or hermaphrodite flowers

  • Provided by: [F].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
    • ]. 

    Stipules paired, lateral, free

  • Provided by: [F].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
    • ]. 

    Leaf-blades penninerved, usually serrate, ± scabrous

  • Provided by: [F].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
    • ]. 

    Trees or shrubs, monoecious or dioecious, unarmed

  • Provided by: [F].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
    • ]. 

    Drupes small, thinly fleshy; endocarp hard.

  • Provided by: [F].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
    • ]. 

    Ovary sessile, 1-locular; styles short, divaricate or inrolled, unbranched, ± persistent

  • Provided by: [F].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
    • ]. 

    Stamens equal in number to the sepals

  • Provided by: [F].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
    • ]. 

    Sepals (4–)5, shortly united, with ♂ buds induplicate-valvate and ♀ buds ± imbricate

  • Provided by: [F].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
    • ]. 

    Habit

    tree shrub

  • Provided by: [C].Flora de Panama
    • Source: [
    • 10
    • ]. 

    Distribution

    A genus of highly variable taxonomically confused species. Widely distributed in subtropical and tropical regions. A single species found in Panama.

  • Provided by: [C].Flora de Panama
    • Source: [
    • 10
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    Literature

    SELECTED REFERENCES

    Baehni, C. 1937. Trema. In: J. F. MacBride et al., ed. 1936+. Flora of Peru. 6 +parts. Chicago. Part 2(2), pp. 269-270. Gardiner, R. C. 1965. Studies in the Leaf Anatomy and Geographic Distribution of Trema. M.S. thesis. University of Connecticut. Nevling, L. I. Jr. 1960. Trema. In: R. E. Woodson Jr. and R. W. Schery et al., eds. 1943-1981. Flora of Panama. 41 fasc. St. Louis. [Ann. Missouri Bot. Gard. 47: 108-110.] Small, J. K. 1903. Flora of the Southeastern United States.... New York. Standley, P. C. 1922-1926. Trees and Shrubs of Mexico. 5 parts. Washington. Part 2, p. 199. [Contr. U.S. Natl. Herb. 23.]

  • Provided by: [E].Flora of North America @ efloras.org
    • Source: [
    • 7
    • ]. 

     Information From

    Cannabaceae
    World Flora Online Data. 2017.
    • A CC0 1.0 Universal (CC0 1.0).
    Flora de Nicaragua
    http://www.tropicos.org/projectwebportal.aspx?projectid=7&pagename=Home&langid=66
    WD Stevens, CU Ulloa, A Pool and OM Montiel. Missouri Botanical Garden Press, 2001
    • B Missouri Botanical Garden
    Flora de Panama
    http://www.tropicos.org/Project/PAC
    Robert E. Woodson, Jr. and Robert W. Schery Annals of the Missouri Botanical Garden Vol. 67, No. 4 (1980), pp. ii-xxxiii
    • C Missouri Botanical Garden
    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
    • D
    Flora of North America @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=1
    'Flora of North America @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=1 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • E Flora of North America Association
    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
    • F
    Flora Mesoamericana
    http://www.mobot.org/MOBOT/fm/
    Gerrit Davidse, Mario Sousa Sánchez, A. O. Chater, Universidad Nacional Autónoma de México. Instituto de Biología, Missouri Botanical Garden, Natural History Museum (London, England) UNAM, 1994
    • G Missouri Botanical Garden
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • H CC0 1.0 Universal (CC0 1.0).