Lavatera trimestris L.
  • Sp. Pl.
  • Annual or rose mallow

Cite taxon page as 'WFO (2020): Lavatera trimestris L. Published on the Internet; Accessed on: 28 Oct 2020'

General Information

Herbs, annual, usually 0.5–1.4 m. Stems sparsely hispid-hairy, hairs simple or few-rayed, glabrate in age. Leaves reduced distally; stipules narrowly triangular, 2–6 mm; petioles equaling blades proximally, 1–7(–13) cm, reduced distally ca. 1/2 blade length; blade green, orbiculate, 2.5–7(–12) cm, proximal leaves unlobed to shallowly 3–5-lobed or angled, distal leaves shallowly palmately 3–7-lobed, lobes triangular, margins crenate or dentate (serrate), apex acuminate or acute to obtuse, surfaces sparsely bristly to glabrous. Inflorescences solitary flowers, clustered towards stem tips, pedicellate. Pedicels 2(–7) cm, elongating in fruit; involucellar bractlets connate halfway, subequal to or 3/4 length of calyx, lobes wide-deltate, 0.6–1 cm, distinctly enlarging in fruit, apex acute. Flowers showy; calyx divided ca. 1/2 its length, campanulate, 1–1.5 cm, enlarging in fruit, ± enclosing fruit, sparsely short stellate-hairy, lobes triangular to narrowly ovate, apex acute to acuminate; corolla 3–7(–10) cm diam., petals rose-pink to white with darker rose veins, 2.5–3.5(–7) cm, bases strongly overlapping (obscuring calyx between), apex blunt to rounded; staminal column puberulent; anthers on upper 3/4 of stamen column, pinkish; style ca. 12+-branched. Mericarps ca. 12+, 3.3–3.7 mm, ridged, covered and obscured by disclike expansion of central axis, glabrous, transverse-reticulately veined on back. 2n = 14.

  • Provided by: [A].Flora of North America @
    • Source: [
    • 1
    • ]. 

    Other Local Names

    Annual or rose mallow

     Information From

    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.
    • A Flora of North America Association
    World Flora Online Data. 2017.
    • B CC0 1.0 Universal (CC0 1.0).
    World Flora Online consortium
    World Flora Online Data. 2018.
    • C CC0 1.0 Universal (CC0 1.0).