1. Family: Asparagaceae Juss.
    1. Genus: Sansevieria Thunb.
      1. Sansevieria pearsonii N.E.Br.

        This species is accepted, and its native range is S. Tanzania to S. Africa.

    [FTEA]

    Dracenaceae, Geoffrey Mwachala & Paul Mbugua, Flora of Tropical East Africa. 2007

    Habit
    Rosulate herb; rhizome subterranean, 0.6–1.2 cm in diameter
    Leaves
    Leaves erect, (4–)5–10, twisted-distichous, compressed-cylindric, 30–60 cm long, ± 4.5–6 cm broad at the sheathing base, gradually tapering to the horny white terete and sharp spine, apex 1–1.7 cm long, margins deep red-brown, less than 1 mm wide, acute, edged with white, thin membrane in some parts, very wide at base in old leaves in lower half, more or less obtuse and green towards the apex, the red-brown edge of the margin run like a collar around the base of the white apical point, slightly rough to very rough, channelled on the face and with ± 7–12 shallow grooves on the rounded back, thickness from the bottom of the channel to the back measured ± one third of the way up 0.8–1.5 cm; channel as wide as leaf near the base and gradually narrowing upwards, especially narrow on the inner (i.e. youngest) leaf; scaly leaves 1–5, 3–10 cm long, stiff, rounded apex, more or less deltoid, broad-based and clasping, red-brown margin with wide white-brown membrane.
    Inflorescences
    Inflorescence a terminal spike-like raceme ± 50 cm long; axis pale green, terete, 0.5–0.6 cm in diameter; flowers (3–)4–6 per cluster; lower inflorescence bracts 3, membranous, ± 5 cm long, clasping twothirds of the circumference at the base of the peduncle; bracteoles 3–10 mm long, fleshy at the base, and thence produced into a membranous acuminate early withering scale; pedicels 5–8 mm long, jointed about the middle, the upper part early deciduous with flower
    Flowers
    Flower buds cylindric, 2.1–2.4 cm long, with a lustrous appearance, drab yellow or white faintly flushed with pink or mauve and drab yellow or white faintly flushed with a mauve and the lightly clavate tip greyish-olive; tube ± 8–10 mm long, lobes linear, 12 mm long, obtuse, strongly revolute near the base; filaments yellowish, ± as long as the perianth, anthers 2.5–3 mm long; style whitish, ± 2 cm long
    Fruits
    Fruit up to 2 per cluster, a globose berry 0.6–0.9 cm diameter
    Figures
    Fig. 3, p. 29
    Distribution
    Zambia, Mozambique, Zimbabwe, Botswana
    Ecology
    No data for our area
    Conservation
    Least concern
    Note
    This taxon was also seen at Brookside Nurseries, Kent, where it had a spiral-distichous leaf arrangement and a very abrupt twist. Newton in Ill. Handbook Succ. plants (2001) regards it as a synonym of {i}S. pearsonii {/i}N.E. Brown

    Images

    Distribution

    Native to:

    Angola, Botswana, KwaZulu-Natal, Mozambique, Namibia, Northern Provinces, Tanzania, Zambia, Zimbabwe

    Introduced into:

    Leeward Is.

    Common Names

    English
    Gemsbok horn, Spiky mother-in-law's tongue, Stiff bowstring

    Sansevieria pearsonii N.E.Br. appears in other Kew resources:

    Date Identified Reference Herbarium Specimen Type Status
    Aug 3, 2007 Heath, A. [447], Botswana K000204337
    Mar 12, 2004 Johnson [268], Mozambique K000204127
    Mar 11, 2004 Robinson, E.A. [2878], Zambia K000204042
    Mar 11, 2004 Fanshawe, D.B. [6946], Zambia K000204040
    Mar 11, 2004 Fanshawe, D.B. [6946], Zambia K000204041
    Mar 11, 2004 Brenan, J.P.M. [7668], Zambia K000204043
    Mar 9, 2004 Martin, J.D. [259/32], Zambia K000204162
    Oct 16, 2002 Trapnell, C.G. [1135], Zambia K000204039
    Oct 12, 2002 Johnson [12], Mozambique K000204126
    Codd, L.E. [5595], South Africa K000204189
    Pearson, H.H.W. [2073], Angola K000255835 Unknown type material
    Pearson, H.H.W. [2073], Angola K000255836 Unknown type material
    Pearson, H.H.W. [2073], Angola K000255837 Unknown type material
    Pearson, H.H.W. [2073], Angola K000204044 Unknown type material
    Rodin, R.J. [2646], South Africa K000204191
    Schinz, H. [15], South Africa K000204190
    Buitendag, E. [1068], South Africa K000204192
    s.coll. [s.n.] K000204045

    First published in Bull. Misc. Inform. Kew 1911: 97 (1911)

    Accepted by

    • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.
    • Timberlake, J.R. & Martins, E.S. (eds.) (2010). Flora Zambesiaca 13(2): 1-83. Royal Botanic Gardens, Kew.
    • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
    • Acevedo-Rodríguez, P. & Strong, M.T. (2005). Monocotyledons and Gymnosperms of Puerto Rico and the Virgin Islands Contributions from the United States National Herbarium 52: 1-415.
    • Germishuizen, G. & Meyer, N.L. (eds.) (2003). Plants of Southern Africa: an annotated checklist. Strelitzia 14.: i-vi, 1-1231. National Botanical Institute, Pretoria.
    • Eggli, U. (ed.) (2001). Illustrated Handbook of Succulent Plants: Monocotyledons: 1-354. Springer-Verlag, Berlin, Heidelberg, New York.

    Literature

    Kew Backbone Distributions
    • Timberlake, J.R. & Martins, E.S. (eds.) (2010). Flora Zambesiaca 13(2): 1-83. Royal Botanic Gardens, Kew.
    • Mwachala, G. & Mbugua, P.K. (2007). Dracaenaceae Flora of Tropical East Africa: 1-43.
    • Jankalski, S. (2006). Brown's Sansevieria monograph - an update Sansevieria 15: 21-29.
    • Acevedo-Rodríguez, P. & Strong, M.T. (2005). Monocotyledons and Gymnosperms of Puerto Rico and the Virgin Islands Contributions from the United States National Herbarium 52: 1-415.
    • Germishuizen, G. & Meyer, N.L. (eds.) (2003). Plants of Southern Africa: an annotated checklist. Strelitzia 14.: i-vi, 1-1231. National Botanical Institute, Pretoria.
    • Eggli, U. (ed.) (2001). Illustrated Handbook of Succulent Plants: Monocotyledons: 1-354. Springer-Verlag, Berlin, Heidelberg, New York.

    Sources

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2018. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    [A] © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Kew Names and Taxonomic Backbone
    The International Plant Names Index and World Checklist of Selected Plant Families 2018. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    [B] © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Plants and People Africa
    Common Names from Plants and People Africa http://www.plantsandpeopleafrica.com/
    [C]
    [D] © Plants and People Africa http://www.plantsandpeopleafrica.com http://creativecommons.org/licenses/by/3.0/