Polystachya asper P.J.Cribb & Podz.
  • Kew Bull. 34: 168 (1979) 


Cite taxon page as 'WFO (2023): Polystachya asper P.J.Cribb & Podz. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000280250. Accessed on: 25 Sep 2023'

Local Descriptions

Order descriptions by:

Morphology

Leaf 10–13 × 1–1.5 cm, narrowly ligulate to narrowly oblanceolate, obtuse, conduplicate at the base. Inflorescence (floral axis) erect, 5–7.5 cm long, with 1 branch near the base, subtended by 2 compressed acute sheaths, fairly densely many-flowered. Peduncle and rhachis pubescent. Pseudobulbs 7–8 cm × 3 mm, narrowly cylindrical, covered by 3–4 tubular, scarious, deciduous sheaths, 1-leafed. Petals 5.5 × 1.5–2 mm, oblanceolate, acute. Dorsal sepal 6.5 × 3 mm, oblong-ovate, acute to acuminate; lateral sepals 7–7.5 × 6.5 mm, obliquely ovate-triangular; mentum 5.5 mm high, conical, sometimes curved. Flowers fleshy, medium yellow in colour; the sepals ovary and pedicel all pubescent. Bracts 2–6 × 1.5 mm, lanceolate, acuminate. Column 1.5 mm long, anther cap conical. Erect epiphytic or lithophytic herb 18–22 cm tall; pseudobulbs clustered. Lip 6–6.5 × 5.5–7.5 mm, papillose within, 3-lobed at about halfway, with a callus forming a papillose, fleshy ridge from the base to the centre; mid-lobe ovate, acute or obtuse; side lobes erect, semi-elliptic, obtuse or rounded.

  • Provided by: [A].Flora Zambesiaca - descriptions
    • Source: [
    • 1
    • ]. 
    Flora Zambesiaca - descriptionsMorphology

    Leaf 10–13 × 1–1.5 cm, narrowly ligulate to narrowly oblanceolate, obtuse, conduplicate at the base. Inflorescence (floral axis) erect, 5–7.5 cm long, with 1 branch near the base, subtended by 2 compressed acute sheaths, fairly densely many-flowered. Peduncle and rhachis pubescent. Pseudobulbs 7–8 cm × 3 mm, narrowly cylindrical, covered by 3–4 tubular, scarious, deciduous sheaths, 1-leafed. Petals 5.5 × 1.5–2 mm, oblanceolate, acute. Dorsal sepal 6.5 × 3 mm, oblong-ovate, acute to acuminate; lateral sepals 7–7.5 × 6.5 mm, obliquely ovate-triangular; mentum 5.5 mm high, conical, sometimes curved. Flowers fleshy, medium yellow in colour; the sepals ovary and pedicel all pubescent. Bracts 2–6 × 1.5 mm, lanceolate, acuminate. Column 1.5 mm long, anther cap conical. Erect epiphytic or lithophytic herb 18–22 cm tall; pseudobulbs clustered. Lip 6–6.5 × 5.5–7.5 mm, papillose within, 3-lobed at about halfway, with a callus forming a papillose, fleshy ridge from the base to the centre; mid-lobe ovate, acute or obtuse; side lobes erect, semi-elliptic, obtuse or rounded. Inflorescence (floral axis) erect, 5–7.5 cm long, with 1 branch near the base, subtended by 2 compressed acute sheaths, fairly densely many-flowered. Peduncle and rhachis pubescent. Pseudobulbs 7–8 cm × 3 mm, narrowly cylindrical, covered by 3–4 tubular, scarious, deciduous sheaths, 1-leafed. Petals 5.5 × 1.5–2 mm, oblanceolate, acute. Dorsal sepal 6.5 × 3 mm, oblong-ovate, acute to acuminate; lateral sepals 7–7.5 × 6.5 mm, obliquely ovate-triangular; mentum 5.5 mm high, conical, sometimes curved. Flowers fleshy, medium yellow in colour; the sepals ovary and pedicel all pubescent. Bracts 2–6 × 1.5 mm, lanceolate, acuminate. Column 1.5 mm long, anther cap conical. Erect epiphytic or lithophytic herb 18–22 cm tall; pseudobulbs clustered. Lip 6–6.5 × 5.5–7.5 mm, papillose within, 3-lobed at about halfway, with a callus forming a papillose, fleshy ridge from the base to the centre; mid-lobe ovate, acute or obtuse; side lobes erect, semi-elliptic, obtuse or rounded.

     Information From

    Flora Zambesiaca - descriptions
    Flora Zambesiaca
    • A
    Orchidaceae
    https://powo.science.kew.org/
    World Flora Online Data. 2022.
    • B CC0 1.0 Universal (CC0 1.0).
    Vahliaceae
    http://www.worldfloraonline.org/organisation/Vahliaceae
    World Flora Online Data. 2021.
    • C CC0 1.0 Universal (CC0 1.0).