Viola riviniana Rchb.
  • Iconogr. Bot. Pl. Crit.
  • Dog or wood violet

Cite taxon page as 'WFO (2020): Viola riviniana Rchb. Published on the Internet; Accessed on: 25 Sep 2020'

General Information

Plants perennial, caulescent, not stoloniferous, 1.8–30 cm. Stems 1–5, erect, ascending, or decumbent, glabrous or puberulent, on caudex from subligneous rhizome. Leaves basal and cauline; basal: 3–5; stipules subulate or lanceolate, margins fimbriate, apex acute to acuminate; petiole 2.5–12 cm, usually glabrous, rarely puberulent; blade ovate to reniform, 2.3–5.5 × 2.6–5.3 cm, base cordate to deeply cordate, margins crenate, eciliate, apex acute or obtuse, abaxial surface glabrous or sparsely puberulent, adaxial surface usually sparsely puberulent, sometimes glabrous; cauline similar to basal except: stipules ovate or lanceolate, margins fimbriate, apex long-acuminate; petiole 1.3–6 cm; blade ovate or broadly ovate, 1.8–5 × 1.5–4.2 cm, apex acute. Peduncles 2.8–10 cm, glabrous, sometimes puberulent. Flowers: sepals lanceolate, margins eciliate; auricles 1.8–2.5 mm (enlarged in fruit); petals violet on both surfaces, lower 3 usually white basally, rarely violet, dark violet-veined, lateral 2 bearded, lowest 13–17 mm, spur white, rarely violet, elongated, 5–7 mm, tip straight or hooked, blunt; style head beardless (surface papillose); cleistogamous flowers axillary. Capsules ovoid or oblong, 8–12 mm, glabrous. Seeds pale to light brown, 1.8–2.1 mm. 2n = 40.

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

    Other Local Names

    Dog or wood violet

     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
    • 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).