Rhododendron lapponicum (L.) Wahlenb.
  • Fl. Lapp.
  • Lapland rose-bay


Cite taxon page as 'WFO (2021): Rhododendron lapponicum (L.) Wahlenb. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000399947. Accessed on: 21 Sep 2021'

General Information

Small, much-branched prostrate or erect shrubs, 0.2–0.45(–1) m tall. Petiole 1.5–4 mm, scaly; leaf blade oblong-elliptic, ovate-elliptic to oblong-obovate, 0.4–1.5(–2.5) × 0.2–0.5(–0.9) cm; base broadly cuneate; apex obtuse or rounded, mucronate; abaxial surface fawn to reddish brown, scales contiguous or overlapping, 2-colored, pale brown or ferruginous, nearly equal in number and intermixed; adaxial surface pale green, matt, densely scaly. Inflorescence (2–)3–5(–6)-flowered. Pedicel 0.3–1.2 cm, scaly; calyx reddish or purple; lobes (0.5–) 1–2 mm, deltoid or rounded, persistent in fruit, scaly, margin ciliate and rarely scaly; corolla broadly funnelform, violet rose to purple or rarely white, (0.65–)0.7–1.3(–1.6) cm, tube (1.5–) 2–5(–6) mm, outer surface glabrous, throat pubescent; stamens 5–10, filaments pubescent towards base; ovary ca. 1.2 mm, densely scaly; style 1.1–1.5 cm, longer than stamens, glabrous. Capsule cylindric-ovate, 3–6 mm, densely scaly. Fl. May–Jul, fr. Sep–Oct.

  • Provided by: [E].Flora Of CHina @ efloras.org
    • Source: [
    • 1
    • ]. 

    Shrubs, to 0.5(-0.7) m, rhizomatous. Stems prostrate to erect; bark ± smooth to vertically furrowed, shredding; twigs with straw-colored to ferruginous, multicellular, broad-rimmed, peltate scales and unicellular-hairy. Leaves persistent; petiole with broad-rimmed, glandular-peltate scales; blade oblong-elliptic to elliptic, ovate, or obovate, 0.4-2(-2.5) × 0.2-0.7 (-0.9) cm, coriaceous, margins entire, plane to revolute, with broad-rimmed scales, apex obtuse to rounded or mucronate, surfaces with conspicuous, straw-colored or golden to ferruginous, broad-rimmed, glandular-peltate scales and unicellular-hairy abaxially. Floral bud scales ferruginous-lepidote, sometimes also unicellular-hairy abaxially, margins ± ciliate, unicellular and multicellular, elongate eglandular-hairy. Inflorescences fasciculate racemes, 3-6-flowered; bracts similar to bud scales. Pedicels 2.5-14 mm, with ferruginous scales and often unicellular-hairy. Flowers opening before development of leaves, erect to horizontal, fragrant; calyx lobes 0.5-2 mm, with ferruginous scales and unicellular-hairy, margins ciliate, unicellular and multicellular eglandular-hairy; corolla rose to purple, sometimes white, without blotch, broadly funnelform, (6.5-)7.5-14(-15) mm, glabrous on outer surface, petals connate (for 3/4+ their lengths), lobes 4.5-8.5 mm, tube gradually expanding into lobes, 1.5-6.5 mm; stamens 5-10, slightly exserted, ± unequal, 7-13 mm; filaments glabrous or proximally unicellular-hairy. Capsules borne on erect pedicels, 4-7 × 2-3 mm, with ferruginous, peltate scales and unicellular-hairy. Seeds without distinct tails; testa closely appressed. 2n = 26, 52.

  • Provided by: [C].Flora of North America @ efloras.org
    • Source: [
    • 2
    • ]. 

    "Freely branched low shrub 1–3 dm, sometimes depressed and forming loose mats; lvs leathery, evergreen, elliptic, 10–15 mm, densely lepidote, especially beneath; fls few in a terminal, umbel-like cluster, bright purple, campanulate, 1.5 cm wide; stamens 5–10; fr 5 mm; 2n=26, 52. Circumboreal, s. to the higher mts. of N. Engl. and N.Y., and rarely to c. Wis. June."

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

    Morphology

    Much branched prostrate or erect shrub to 1 m. Leaves 4–20(–25) x 2–7(–9) mm, oblong–elliptic to elliptic–ovate, apex obtuse or rounded, mucronate (sometimes obscurely so), base cuneate, undersurface fawn to ferrugineous, the contiguous scales bicolorous, either straw–coloured to fawn, or ferrugineous, the two colours occurring in various proportions. Inflorescence 3–6–flowered, pedicels lepidote, 3–12 mm. Calyx 1–2 mm, lobes deltoid, variably lepidote, margin ciliate. Corolla violet–rose to purple or sometimes white, broadly funne1–shaped, pubescent in the throat, (6–5–)7–5–14(–15) mm, tube (1–5–)2–5(–6) mm. Stamens 5–10, filaments pubescent towards the base. Ovary lepidote, style 10.5–15 mm, exceeding the stamens, glabrous. Capsule ovoid, 4–6 mm, lepidote.

  • Provided by: [D].Rhododendron Resource Centre
    • Source: [
    • 4
    • ]. 

    Other Local Names

    NameLanguageCountry
    Lapland rose-bay

      Bibliography

     Information From

    Ericaceae
    World Flora Online Data. 2017.
    • A 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.
    • B Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    Flora of North America @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=1
    'Flora of North America @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=1 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • C Flora of North America Association
    Rhododendron Resource Centre
    Elliott, A. (2019). Clematis (Ranunculaceae): Webedition 1. In: Watson, Akiyama, Ikeda, Pendry, Rajbhandari, Shrestha. Flora of Nepal, vol. 3, Royal Botanic Garden Edinburgh
    • D Attribution-NonCommercial-ShareAlike CC BY-NC-SA
    Flora Of CHina @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=2
    'Flora of China @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=2 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • E Missouri Botanical Garden
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • F CC0 1.0 Universal (CC0 1.0).