1. Family: Hypoxidaceae R.Br.
    1. Genus: Hypoxis L.
      1. Hypoxis rigidula Baker

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

    [FTEA]

    Hypoxidaceae, J. Wiland-Szymańska, I. Nordal. Flora of Tropical East Africa. 2006

    Type
    Types: South Africa, Cooper 883 (K, syn.) & 3239 (K, syn.) & 1763 (?, syn.) & 3241 (?, syn.); Burchell 3694 (K, syn.); Zeyher 1670 (K, P!, syn.); Drège 2194 (K, P!, syn.); Hort. Kew anno 1863 (K, syn.)
    Habit
    Robust herb to 1 m tall, growing separately or in clumps
    Corms
    Corm turbinate to hemisphaeric with flat base, vertical or horizontal, 2.5–10.5 x 1.5–6 cm, yellow or orange inside
    Leaves
    Leaves dark green, lighter at base, creating a distinctive pseudostem 6–15 cm long, linear, rigidly coriaceous, erect, conduplicate, 30–130 x 0.5–2.2 cm, pilose with tufted whitish to silvery greyish hairs along margins and midrib and with 2–3-branched hairs on the lamina; veins 11–17, distinctive
    Inflorescences
    Inflorescences 1–5, with scapes 30–70 cm x 1.5–2 mm, overtopped by the mature leaves
    Flowers
    Flowers 3–14(–23), alternate, in an up to 15 cm long spicate raceme; lower pedicels 0.6–1(–1.9) cm long, shorter towards the apex; bracts linear-subulate, 12–26 mm long; tepals lanceolate, acute, (5–)12–18 x 5–7 mm; stamens equal, filaments subulate, 1.3–2.5 mm long, anthers 3–6 mm long, fused apically; ovary turbinate, 4–8 x 3–5 mm, style 0.5–1(–2.3) mm, stigma 1–2(–3.5) mm long
    Fruits
    Capsule turbinate, 8 mm long, opening by transverse slit near the middle
    Seeds
    Seeds glossy, black, globose, 1.2–1.7 mm diameter with papillate testa, cuticle smooth.
    Ecology
    Open grassland or woodland, fallows; laterite or black soil; 800–2300 m
    Distribution
    Range: Mozambique, Zimbabwe, Swaziland, Lesotho, South Africa Flora districts: K3 K4 K5 K7 T1 T3 T5 T6 T7
    [FZ]

    Hypoxidaceae, I. Nordal & C. Zimudzi. Flora Zambesiaca 12:3. 2001

    Habit
    Robust pilose perennial herb to 80(95) cm tall.
    Rhizomes
    Rhizome vertical, 3–5 × 1.5–6 cm, turbinate to hemispheric with a flat base, or up to c. 8 cm long and ± cylindrical, equatorially ringed by stout contractile roots.
    Leaves
    Leaves 5–9, erect, ± rigid, flat or ± conduplicate above the narrow funnel-shaped sheaths; sheaths ± broadly hyaline on the margins; lamina increasing to c. 80 cm in length, mostly 5–12 mm wide, linear and gradually tapering to a narrowly acute apex, sometimes blade extremely narrow and c. 3 mm wide, many-ribbed often with a pair of lateral ribs more pronounced than the rest, thinly loosely pilose to densely pilose-hispidulous on the blades with shorter stellate hairs on the margins and midrib, sometimes blade glabrous; when present the hairs on the blade thinly 2-armed with arms up to c. 4 mm long, appressed or patent; hairs on the margins and midrib mostly 5–9-armed with 1 arm longer than the others; outermost leaves reduced to membranous sheaths with or without small blades, the outer surface ± densely sericeous-strigose to lanate, the hairs 3–9-armed (stellate); pseudostem 4–13 cm long and up to 4–10 mm in diameter.
    Inflorescences
    Inflorescences 1–6, usually appearing with the leaves.
    Scape
    Scapes up to c. 37 cm long, overtopped by the mature leaves, somewhat flattened in cross-section, 1–2(3) mm wide, densely appressed pubescent to ascending hispid particularly towards the apex and on the margins towards the base, the hairs 3–6-armed (stellate) with arms directed to apex and base; bracts 7–20(30) mm long, subulate to linear-lanceolate; pedicels 0–6(10) mm long, erect-ascending, the upper flowers mostly sessile.
    Flowers
    Flowers 3–14(23) in a spiciform arrangement 3–12 cm long.
    Tepal
    Outer tepals 5–15(22) × 3–5 mm, narrowly elliptic with ± involute margins, silvery strigose-sericeous abaxially; inner tepals 6–10 × 4–7 mm, ± broadly elliptic, glabrous except for the abaxial midrib, the hairs unequally 3–8-armed usually with one arm strongly developed.
    Stamens
    Filaments 1.3–1.6 mm long; thecae 3–4.5(5.7) mm long.
    Pistil
    Style 0.5–1(2.3) mm long; stigma 1–2(3.5) mm long.
    Fruits
    Capsule 4–8 × 3–7 mm, turbinate, 16- to 20-seeded, circumscissile.
    Seeds
    Seeds black and glossy, 1.2 to 1.7 mm in diameter, globose; testa papillose, the papilla minute varying from incipient dome-shaped undulations to sharply conical points, the cuticle smooth and shiny.

    Images

    Distribution

    Native to:

    Cape Provinces, Free State, Kenya, KwaZulu-Natal, Lesotho, Mozambique, Namibia, Northern Provinces, Swaziland, Tanzania, Zimbabwe

    Hypoxis rigidula Baker appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jul 1, 2006 Scott Elliot, G.F. [8206], Tanzania K000255970

    First published in J. Linn. Soc., Bot. 17: 116 (1878)

    Accepted by

    • Singh, Y. (2007). Hypoxis (Hypoxidaceae) in Southern Africa: taxonomic notes South African Journal of Botany 73: 360-365.
    • Germishuizen, G. & Meyer, N.L. (eds.) (2003). Plants of Southern Africa: an annotated checklist. Strelitzia 14.: i-vi, 1-1231. National Botanical Institute, Pretoria.
    • Pope, G.V. (ed.) (2001). Flora Zambesiaca 12(3): 1-106. Royal Botanic Gardens, Kew.

    Literature

    Kew Backbone Distributions
    • Wiland-Szymanska, J. & Nordal, I. (2006). Hypoxidaceae Flora of Tropical East Africa: 1-25.
    • Germishuizen, G. & Meyer, N.L. (eds.) (2003). Plants of Southern Africa: an annotated checklist. Strelitzia 14.: i-vi, 1-1231. National Botanical Institute, Pretoria.
    • Pope, G.V. (ed.) (2001). Flora Zambesiaca 12(3): 1-106. Royal Botanic Gardens, Kew.
    Flora of Tropical East Africa
    • F.Z. 12, 3: 12 (2001).
    • Kirkia 16: 16 (1996) pro parte
    • Bot. Not. 1937: 166 (1937)
    • E.J. 51: 331 (1914)
    • F.C. 6: 186 (1896)
    • J.L.S. 17: 116 (1878)

    Sources

    Flora Zambesiaca
    Flora Zambesiaca
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Flora of Tropical East Africa
    Flora of Tropical East Africa
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © 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 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0