Polygonum punctatum Elliott
  • Sketch Bot. S. Carolina
  • erva-de-bicho

Cite taxon page as 'WFO (2022): Polygonum punctatum Elliott. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000489120. Accessed on: 23 Jan 2022'

General Information

Polygonum punctatum Elliott, Sketch Bot. S. Carolina 1: 455. 1817; P. acre Kunth.

Hierbas anuales o perennes, hasta 1.2 m de alto; tallos postrados a erectos o ascendentes, simples o ramificados. Hojas lanceoladas u oblongo-lanceoladas, 3–15 cm de largo y 1–2.5 cm de ancho, acuminadas en ambos extremos; pecíolos 2–4 mm de largo; ócreas 12–25 mm de largo, marginadas con cerdas largas, caducas. Racimos 2–8 cm de largo, flores laxas o geniculadas, erectas o lánguidas; ocréolas y pedicelos 1 mm de largo; tépalos 1–2 mm de largo, verdosos, escasa a densamente punteados. Aquenio 2.5 mm de largo, liso, brillante, negro.

Maleza común de áreas muy húmedas, en todo el país; 20–1000 m; fl y fr durante todo el año; Ortiz 141, Stevens 3895; Estados Unidos a Sudamérica y en las Antillas. "Chilillo de perro".

  • Provided by: [E].Flora de Nicaragua
    • Source: [
    • 1
    • ]. 

    Slender glabrous annuals or perennials, sometimes creeping and forming col- onies. Leaves punctate with dark glands, subglabrous, entire but minutely ciliate on the margins, apically attenuate, the bases decurrent on the petioles; blades lanceolate to narrowly ovate, 2-10 cm. long, 0.5-2 cm. broad; ochreae 0.5-1.5 cm. long, strigose-ciliate only apically. Inflorescences of terminal interrupted, often drooping, spicate racemes or panicles, the peduncles glabrous, the floriferous por- tions 5-15 cm. long, about 0.5 cm. broad, the flowers fascicled in ciliate ochreolae 2-3 mm. long. Flowers mostly white to greenish, the pedicels apically articulated and exceeding the ochreolae by 1-2 mm.; tepals 5, subequal, the outer 3-4 mm. long, the inner somewhat shorter, strongly punctate, ovate; stamens typically 8, discrete, affixed just above the base of the tepals; filaments 1-1.5 mm. long, the anthers less than 0.5 mm. in diameter, subrotund, versatile, thus appearing peltate; ovary trigonous; styles 3, about 1 mm. long, connate for about 0.5 mm.; stigmata capitate. Achenes triquetrous (in Panama), with ovate facies and inconspicuous beaks, brown to black, 2.5-4 mm. long.

  • Provided by: [D].Flora de Panama
    • Source: [
    • 2
    • ]. 

    "Slender annual or perennial to 1 m, simple or branched, erect or ascending; lvs narrowly lanceolate or elliptic, glabrous, to 20 × 2 cm; ocreae glabrous or strigose; racemes slender, erect or arched, to 10 cm, much interrupted, especially below, where the internodes may be 2–3 cm; fls greenish; tep 5, 2 mm; pedicels exsert 1–2 mm at maturity; achenes smooth and shining, lenticular or trigonous, 2.4–3 mm, two-thirds as wide; 2n=44. Wet soil, open swamps, and shallow water; Que. to Fla., and w. to the Pacific; also in tropical Amer. (Persicaria p.; Polygonum acre) Two geographically coextensive vars. of doubtful significance:"

  • Provided by: [F].New York Botanical Garden
    • Source: [
    • 3
    • ]. 


    This, the most commonly collected and perhaps most abundant species in Panama, ranges from southern Canada to Argentina.

  • Provided by: [D].Flora de Panama
    • Source: [
    • 2
    • ]. 

    Distribution Map

    • Native distribution
    Found in
    • Southern America Brazil Acre
    • Amazonas
    • Parí
    • Roraima
    • Alagoas
    • Bahia
    • Ceará
    • Maranh
    • Paraába
    • Pernambuco
    • Piauá
    • Sergipe
    • Paraní
    • Rio Grande do Sul
    • Santa Catarina
    • Espirito Santo
    • Minas Gerais
    • Rio de Janeiro
    • São Paulo
    • Brazilia Distrito Federal
    • Goiás
    • Mato Grosso
    • Mato Grosso do Sul

    Other Local Names



     Information From

    MBG Floras Images
    Flora images. Missouri Botanical Garden. Accessed on Jun. 2018.
    • A Missouri Botanical Garden
    • B Missouri Botanical Garden
    Brazilian Flora 2020 project - Projeto Flora do Brasil 2020
    Brazil Flora G (2014): Brazilian Flora 2020 project - Projeto Flora do Brasil 2020. v393.147. Instituto de Pesquisas Jardim Botanico do Rio de Janeiro. Dataset/Checklist. doi:10.15468/1mtkaw
    • C Group Brazil Flora, REFLORA Program
    Flora de Panama
    Robert E. Woodson, Jr. and Robert W. Schery Annals of the Missouri Botanical Garden Vol. 67, No. 4 (1980), pp. ii-xxxiii
    • D Missouri Botanical Garden
    Flora de Nicaragua
    WD Stevens, CU Ulloa, A Pool and OM Montiel. Missouri Botanical Garden Press, 2001
    • E Missouri Botanical Garden
    New York Botanical Garden
    Descriptions of plants should be attributed to the full citation for each individual article, chapter or book that is the source for each record, which should include the authors of original publication.
    • F Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    International Union for Conservation of Nature
    IUCN 2016. IUCN Red List of Threatened Species. Version 2016-2
    • G All Rights Reserved
    International Union for Conservation of Nature v.3
    IUCN 2019. The IUCN Red List of Threatened Species. Version 2019-1.
    • H See IUCN Terms and conditions of use http://www.iucnredlist.org/info/terms-of-use
    World Flora Online Data. 2017.
    • I CC0 1.0 Universal (CC0 1.0).