Geum L.
  • Sp. Pl. 1: 500. 1753. (1 May 1753)
  • Avens, benoîte [Greek geuo or geyo, to give relish, alluding to quality of roots of St. Benedict's herb, G. urbanum]

Cite taxon page as 'WFO (2021): Geum L. Published on the Internet; Accessed on: 23 Oct 2021'

General Information

7. Geum L.

Por F.R.Barrie.

Hierbasrizomatosas perennes; raíces fibrosas. Hojas predominantemente basales,simples, pinnatífidas o imparipinnati-compuestas, el folíolo terminal másgrande que los folíolos laterales; hojas caulinares pocas, reducidas; estípulasadnatas al pecíolo. Flores pocas a varias, dispuestas individualmente sobrepedicelos alargados; hipanto pateliforme, bractéolas 5; sépalos 5; pétalos 5,amarillos, blancos o rojos; estambres numerosos; receptáculo cónico ocilíndrico; ovario súpero; carpelos numerosos, libres; óvulos 1 por carpelo;estilos filiformes, alargados y persistentes en fruto. Frutos en aquenios,agregados en cabezuelas globosas o cilíndricas, el estilo persistente formandoun rostro uncinado alargado. 60 spp. Generalmente Eurasia y Norteamérica, unaspocas spp. en Sudamérica y Sudáfrica, 1 sp. en Mesoamérica.

  • Provided by: [D].Flora Mesoamericana
    • Source: [
    • 1
    • 2
    • ]. 

    Herbs, perennial, ?subscapose or leafy-stemmed?, 1–12 dm, glabrous or hairy; from stout caudices or rhizomatous, ?fibrous-rooted?. Stems 1–5, erect, simple. Leaves winter-persistent (basal), basal and cauline, simple, 3-foliolate, lyrate-pinnate, or odd-pinnate (commonly with smaller leaflets intermixed with larger ones); stipules ?often conspicuous?, ± free or adnate to petiole or blade, linear, lanceolate, or ovate, margins entire, toothed, or lobed; petiole present, sometimes absent on cauline leaves; blade oblanceolate, obovate, elliptic, ovate, or orbiculate, herbaceous, major leaflets 1–26, rhombic, elliptic, oblong, obovate, oblanceolate, orbiculate, reniform, or cordate, margins flat, 2–7-lobed and/or laciniate, serrate, dentate, or crenate, venation pinnate or palmate. Inflorescences terminal, 1–18-flowered, cymes, open; bracts present as reduced cauline leaves; bracteoles present or absent. Pedicels present. Flowers 4–46 mm diam.; epicalyx bractlets, if present, 5 (10 in G. glaciale); hypanthium saucer-shaped to cup-shaped, 2–6 mm; sepals 5(–10 in G. glaciale), erect to erect-spreading, reflexed or not, deltate, deltate-ovate, or deltate-lanceolate; petals 5(–9 in G. glaciale), white to yellow, sometimes suffused with pink or purple, or purple-veined, obovate, orbiculate, ovate, obcordate, obdeltate, spatulate, suborbiculate, elliptic, or oblong; stamens [10–]25–120, shorter than petals; torus hemispheric to cylindric; carpels (2–)20–250(–450), ?styles entire or geniculate-jointed, distal portions then deciduous?; ovule 1. Fruits aggregated achenes, (2–)20–250(–450), ovoid to fusiform, tapered apically into style, 2–4.5 mm; hypanthium persistent; sepals persistent, erect, spreading, recurved, or reflexed; styles persistent, becoming accrescent, hooked and elongating to 10 mm, or not hooked and elongating to 70 mm. x = 7.

  • Provided by: [C].Flora of North America @
    • Source: [
    • 3
    • ]. 

    Herbs perennial, rhizomatous, sometimes stoloniferous. Stipules adnate to and sheathing petiole; radical leaves pinnate or pseudopinnate; terminal leaflet largest; lateral leaflets often in alternating larger and smaller pairs; cauline leaves few, often 3-foliolate or bractlike. Flowers solitary or in corymbs, bisexual. Hypanthium turbinate or hemispheric. Sepals 5, valvate, persistent; epicalyx segments 5, small, alternate with sepals. Petals 5, yellow, white, or red, orbicular or obovate. Stamens numerous, crowded. Disk lining hypanthium, smooth or ribbed. Carpels numerous, borne on prominent, usually cylindric receptacle, free; ovule ascending; style filiform, jointed; stigma slightly recurved or hooked, minute. Achenes sessile or stipitate, small, hooked at apex of beak. Seed erect; testa membranous; cotyledons oblong. x = 7.

  • Provided by: [E].Flora Of CHina @
    • Source: [
    • 4
    • ]. 

    "Hypanthium turbinate or hemispheric; sep commonly imbricate; bractlets linear to oblong, or wanting; pet elliptic to obovate; stamens 10–many; ovaries numerous on an elongate, cylindric receptacle; style filiform, elongate; achenes tipped by the long, persistent style; fibrous-rooted perennial herbs with variable foliage, the lower lvs pinnate, the middle smaller and commonly trifoliolate, the upper often simple; fls solitary to many in terminal corymbs; pet white to yellow, or suffused with pink or purple. (Sieversia) 50, mostly N. Hemisphere."

  • Provided by: [B].New York Botanical Garden
    • Source: [
    • 5
    • ]. 


    SELECTED REFERENCES Bolle, F. 1933. Eine Übersicht über die Gattung Geum L. und die ihr nahestehenden Gattungen. Repert. Spec. Nov. Regni Veg. Beih. 72: 1–119. Gajewski, W. 1957. A cytogenetic study on the genus Geum L. Monogr. Bot. 4: 1–416. Smedmark, J. E. E. 2006. Recircumscription of Geum (Colurieae: Rosaceae). Bot. Jahrb. Syst. 126: 409–417.

  • Provided by: [C].Flora of North America @
    • Source: [
    • 3
    • ]. 

    Other Local Names

    Avens, benoîte [Greek geuo or geyo, to give relish, alluding to quality of roots of St. Benedict's herb, G. urbanum]

     Information From

    MBG Floras Images
    Flora images. Missouri Botanical Garden. Accessed on Jun. 2018.
    • A 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.
    • B Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    Flora of North America @
    'Flora of North America @ eFloras (2008). Published on the Internet [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • C Flora of North America Association
    Flora Mesoamericana
    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
    • D Missouri Botanical Garden
    Flora Of CHina @
    'Flora of China @ eFloras (2008). Published on the Internet [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • E Missouri Botanical Garden
    CC0 1.0 Universal (CC0 1.0).
    • F CC0 1.0 Universal (CC0 1.0).
    World Flora Online consortium
    World Flora Online Data. 2018.
    • G CC0 1.0 Universal (CC0 1.0).