1. Family: Santalaceae R.Br.
    1. Genus: Thesium L.
      1. Thesium gracile A.W.Hill

        This species is accepted, and its native range is Zimbabwe to Mozambique and Northern Prov.

    [FZ]

    Flora Zambesiaca. Vol. 9, Part 3. Polygonaceae-Myriaceae. Pope GV, Polhill RM, Martins ES. 2006.

    Type
    Lectotype (chosen here): Zimbabwe, Sebakwe, c. 1219 m, xii.1904, Eyles 85 (BM, lectotype; K, fragment; SRGH).
    Leaves
    Leaves ascending, 10–35 × 0.5–1.5(1.8) mm midway on stem, smaller upwards and passing into bracts, often shorter and slightly broader at base, linear, apex apiculate, base broad, thick-textured, margins pale, cartilaginous, very minutely scabridulous or smooth, midrib raised on both surfaces Leaves ascending, 10–35 × 0.5–1.5(1.8) mm midway on stem, smaller upwards and passing into bracts, often shorter and slightly broader at base, linear, apex apiculate, base broad, thick-textured, margins pale, cartilaginous, very minutely scabridulous or smooth, midrib raised on both surfaces.
    Peduncles
    Peduncles (lowermost) 3–10 mm long Peduncles (lowermost) 3–10 mm long.
    Perianth
    Perianth yellowish; tube 0.5–1 mm long, external glands conspicuous, elliptic, equalling tube; lobes 1–1.7 × 0.6–1 mm, triangular, acute, white-bearded from apex Perianth yellowish; tube 0.5–1 mm long, external glands conspicuous, elliptic, equalling tube; lobes 1–1.7 × 0.6–1 mm, triangular, acute, white-bearded from apex.
    Stamens
    Stamens inserted at base of perianth lobes; filaments 0.1–0.5 mm long, almost hidden by anthers; anthers 0.3–0.5 mm long Stamens inserted at base of perianth lobes; filaments 0.1–0.5 mm long, almost hidden by anthers; anthers 0.3–0.5 mm long.
    Style
    Style 0.2–0.7 mm long; stigma reaching almost halfway up anthers
    Fruits
    Fruit 2.3–2.5 × 2.3–2.5 mm, light red-brown, ribs and reticulations equally prominent but not very strongly raised. Fruit 2.3–2.5 × 2.3–2.5 mm, light red-brown, ribs and reticulations equally prominent but not very strongly raised.
    Ecology
    Grassland and open grassy woodland; 120–1200 m.
    Note
    Its true relationship seems to lie with T. brevibarbatum: see under that species (above). Thesium gracile shares with T. goetzeanum the peculiarity of often drying mauvish-grey, but it is at once distinguished by having its flowers always disposed in cymules with the bract adnate only to the lower part of the peduncle (look at the lower cymules).
    Distribution
    ZIM C, ZIM S, ZIM W, ZIM E, MOZ Z, MOZ MS, MOZ M Mozambique Also in South Africa (Limpopo, Mpumalanga and KwaZulu-Natal Provinces). Zimbabwe
    Habit
    Perennial herb with thick woody caudex up to 50 mm in diameter and woody stolons up to 10 mm diameter; stems many, tufted from crown, c. 150–400 mm long, paniculately branched above, strongly ribbed by raised vascular strands terminating in midrib of leaves and bracts, leafy. Perennial herb with thick woody caudex up to 50 mm in diameter and woody stolons up to 10 mm diameter; stems many, tufted from crown, c. 150–400 mm long, paniculately branched above, strongly ribbed by raised vascular strands terminating in midrib of leaves and bracts, leafy
    Flowers
    Flowers in 3- or occasionally 7-flowered cymules racemosely arranged at tips of branchlets, 5–8(10) cymules in each inflorescence. Flowers in 3- or occasionally 7-flowered cymules racemosely arranged at tips of branchlets, 5–8(10) cymules in each inflorescence
    Bracts
    Bracts 6–18 × 0.8–1.5 mm, linear, leaf-like, adnate to base of peduncle (usually ¼ total length or less, rarely ⅓); bracteoles 2, 2.5–11 × 0.4–1 mm. Bracts 6–18 × 0.8–1.5 mm, linear, leaf-like, adnate to base of peduncle (usually ¼ total length or less, rarely ⅓); bracteoles 2, 2.5–11 × 0.4–1 mm
    Pistil
    Style 0.2–0.7 mm long; stigma reaching almost halfway up anthers.

    Images

    Distribution

    Native to:

    Mozambique, Northern Provinces, Zimbabwe

    Thesium gracile A.W.Hill appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Kirk, J. [s.n.], Mozambique K000431476 Unknown type material
    Eyles [85] K000431478 Unknown type material
    Johnson, M. [255], Mozambique K000431477

    First published in Bull. Misc. Inform. Kew 1910: 185 (1910)

    Accepted by

    • Visser, N., Le Roux, M.M. & van Wyk, B.-E. (2018). A taxonomic revision of the Thesium goetzeanum species complex (Santalaceae) from Lesotho, South Africa and Swaziland Journal of South African Botany 119: 45-62.
    • Pope, G.V., Polhill, R.M. & Martins, E.S. (eds.) (2006). Flora Zambesiaca 9(3): 1-277. Royal Botanic Gardens, Kew.
    • Germishuizen, G. & Meyer, N.L. (eds.) (2003). Plants of Southern Africa an annotated checklist Strelitzia 14: 1-1231. National Botanical Institute, Pretoria.

    Literature

    Flora Zambesiaca
    • Burtt Davy, Fl. Pl. Ferns Transvaal, part 2: 462 (1932).
    • F.T.A. 6, 1: 419 (1911).
    • Bull. Misc. Inform., Kew 1910: 185 (1910).
    Kew Backbone Distributions
    • Visser, N., Le Roux, M.M. & van Wyk, B.-E. (2018). A taxonomic revision of the Thesium goetzeanum species complex (Santalaceae) from Lesotho, South Africa and Swaziland Journal of South African Botany 119: 45-62.
    • Pope, G.V., Polhill, R.M. & Martins, E.S. (eds.) (2006). Flora Zambesiaca 9(3): 1-277. Royal Botanic Gardens, Kew.

    Sources

    Flora Zambesiaca
    Flora Zambesiaca
    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