Geranium robertianum L.
  • Sp. Pl.

Cite taxon page as 'WFO (2020): Geranium robertianum L. Published on the Internet; Accessed on: 21 Oct 2020'

General Information

Biennials or sometimes annuals. Stem 10-55 cm tall, erect, not rooting at nodes, with 0.4-1 mm ± patent glandular trichomes. Stipules ovate, distinct. Leaves opposite; petiole with 0.3-0.5 mm retrorse not appressed nonglandular trichomes and 0.4-2.4 mm patent glandular trichomes; leaf blade 3-9 cm, palmately divided, pilose with ± appressed glandular trichomes; segments 5, rhombic, with a petiolule on middle segment 0.2-0.4 × as long as its segment, 16-46-lobed in distal half, ratio of second sinus/middle segment length = 0.26-0.5. Cymules solitary, 2-flowered; peduncle 1-6 cm. Pedicel 0.5-2 cm, with 0.4-1.5 mm patent glandular trichomes and 0.3-0.5 mm retrorse not appressed nonglandular trichomes; bracteoles lanceolate. Sepals 6-8 mm, mucro 1.8-2.5 mm, ratio of mucro/sepal length = ca. 0.3, outside with 0.3-0.5 mm ± patent nonglandular trichomes and 0.4-3.2 mm patent glandular trichomes, inside glabrous. Petals purplish, 7.5-9.7(-10.4) mm, erect to patent, glabrous, apex rounded. Staminal filaments pinkish, lanceolate with an abruptly narrowed apex, glabrous; anthers purplish, 0.4-0.6 mm. Nectaries 5, hemispheric, glabrous. Stigma pinkish. Fruit 1.9-2.3 cm, erect when immature; mericarps reticulate, ridges sparse and scarcely anastomosing in basal half but denser apically and forming 1 or 2(or 3) overlapping collar-like keels at apex, without a basal callus, glabrous or sometimes with ca. 0.2 mm nonglandular trichomes, small glands, or both; rostrum 1.7-1.9 cm, with a 4-5 mm narrowed apex; stigmatic remains 1-1.3 mm. Seeds 2.1-2.2 mm. Fl. Apr-Jun, fr. May-Aug. 2n = 64.

  • Provided by: [B].Flora Of CHina @
    • Source: [
    • 1
    • ]. 

    "Weak annual or biennial with branched, spreading, villous or villosulous stems to 6 dm; lvs 3–5-cleft to the base, at least the terminal segment evidently petiolulate, all segments pinnately lobed or cleft; peduncles from most of the upper nodes, mostly 2-fld; sep 7–9 mm, shortly aristate, erect at anthesis; pet 9–13 mm, bright pink or red-purple, entire, long- clawed; carpel-bodies (unlike our other spp.), disarticulating from the beak but tending to remain attached for some time to the stylar column by a pair of elongate, subapical filaments, the proper beak separating from the stylar column ± as in other spp.; 2n=32, 64. Damp rich woods; widespread in the Old World (esp. Eurasia) and widely naturalized in our range. May–Sept. (Robertiella r.)"

  • Provided by: [D].New York Botanical Garden
    • Source: [
    • 2
    • ]. 

    Distribution Map

    • Introduced distribution
    Introduced into
    • Southern America Brazil Paraní
    • Rio Grande do Sul
    • Santa Catarina
    • Rio de Janeiro


     Information From

    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
    • A Group Brazil Flora, REFLORA Program
    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.
    • B Missouri Botanical Garden
    World Flora Online Data. 2017.
    • C CC0 1.0 Universal (CC0 1.0).
    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.
    • D Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    World Flora Online consortium
    World Flora Online Data. 2018.
    • E CC0 1.0 Universal (CC0 1.0).