Cypripedium japonicum Thunb.
  • Syst. Veg. ed. 14


Cite taxon page as 'WFO (2021): Cypripedium japonicum Thunb. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000935429. Accessed on: 18 Sep 2021'

General Information

Plants 35-55 cm tall, with a relatively slender, creeping rhizome 3-4 mm in diam. Stem erect, brown tomentose, with several sheaths in lower part and 2 subopposite or rarely 3 nearly alternate leaves near middle. Leaf blade flabellate, 10-16 × 10-21 cm, both surfaces hairy toward base, with many radiating veins reaching margin of apical half, base subcuneate, margin undulate, minutely ciliate. Inflorescence terminal, with 1 flower; peduncle brown tomentose; floral bracts foliaceous, rhombic or ovate-lanceolate, 2.5-5 × 1-2(-3) cm, glabrous, minutely ciliate; pedicel and ovary 2-3 cm, densely hairy. Flowers pendulous; sepals and petals greenish yellow, base ± spotted with purple; lip yellowish pink to whitish, ± marked with purplish red spots and stripes. Dorsal sepal narrowly elliptic or narrowly elliptic-lanceolate, 4.5-5.5 × 1.5-2 cm, glabrous, apex acuminate; synsepal similar to dorsal sepal, 4-5 × 1.5-2.5 cm, apex shallowly 2-lobed. Petals obliquely lanceolate, 4-5 × 1-1.2 cm, villous toward adaxial base, apex acuminate; lip pendulous, pouched, subellipsoid or obovoid, 4-5 × 3-3.5 cm, strongly grooved-margined around mouth. Staminode elliptic, ca. 10 × 6-7 mm, base shortly auriculate. Capsule subfusiform, 4.5-5 × ca. 1.2 cm, sparsely puberulent. Fl. Apr-May, fr. Jun-Oct. 2n = 20.

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

     Information From

    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.
    • A Missouri Botanical Garden
    Orchidaceae
    • B CC0 1.0 Universal (CC0 1.0).
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • C CC0 1.0 Universal (CC0 1.0).