1. Family: Santalaceae R.Br.
    1. Genus: Thesium L.
      1. Thesium brevibarbatum Pilg.

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

    [FZ]

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

    Type
    Type:Zimbabwe, grassy steppe near Mutare (Umtali), 1200 m, ix.1905, Engler 3176 (B†, holotype; K, fragment).
    Leaves
    Leaves ascending, c. 5–13 × 0.6–1.2 mm, those at base of stem often reduced, linear, apex apiculate, base broad, thick-textured, margins pale, cartilaginous, minutely scabridulous, midrib slightly raised on both surfaces, minutely scabridulous on dorsal face Leaves ascending, c. 5–13 × 0.6–1.2 mm, those at base of stem often reduced, linear, apex apiculate, base broad, thick-textured, margins pale, cartilaginous, minutely scabridulous, midrib slightly raised on both surfaces, minutely scabridulous on dorsal face.
    Flowers
    Flowers mostly solitary, occasionally paired or in a 3-flowered cymule, up to c. 10 racemosely arranged at tips of branchlets, often crowded Flowers mostly solitary, occasionally paired or in a 3-flowered cymule, up to c. 10 racemosely arranged at tips of branchlets, often crowded.
    Bracts
    Bracts c. 5–14 × 0.8–1.5 mm, linear, leaf-like, adnate to part of pedicel/peduncle (often only to lower quarter or half, higher in uppermost flowers); bracteoles 2, c. 3–1 × 0.5–1 mm Bracts c. 5–14 × 0.8–1.5 mm, linear, leaf-like, adnate to part of pedicel/peduncle (often only to lower quarter or half, higher in uppermost flowers); bracteoles 2, c. 3–1 × 0.5–1 mm.
    Peduncles
    Peduncles (lowermost) up to 6 mm long, but often only half that Peduncles (lowermost) up to 6 mm long, but often only half that.
    Perianth
    Perianth colour unknown; tube 0.5–1 mm long, external glands ellipsoid, equalling tube; lobes 1–1.5 × 0.6–0.8 mm, triangular, acute, white-bearded from apex Perianth colour unknown; tube 0.5–1 mm long, external glands ellipsoid, equalling tube; lobes 1–1.5 × 0.6–0.8 mm, triangular, acute, white-bearded from apex.
    Style
    Style 0.5–1 mm long; stigma reaching about halfway up anthers
    Ecology
    Brachystegia woodland; 900–1700 m.
    Note
    The holotype of T. brevibarbatum was destroyed in the disastrous Berlin fire; a few fragments are preserved in the Kew Herbarium, the largest piece being an entire stem 90 mm long, in flower but not in fruit. Similar short flowering stems are present on all three of the collections cited above, and which constitute all the material seen by me. In two of these specimens, collected between the end of November and the end of December, these short stems are well past flowering (they bear only the persistent bracts and bracteoles) and are overtopped by younger, laxer flowering branches; the third specimen (Mavi 768) collected in mid-August, is only in the first stage of flowering. It seems likely that these short primary flowering stems are characteristic of the species, and will distinguish it from its close (and sympatric) ally, T. gracile, which shows no trace of them, and seems to flower only when it attains a height of at least 150 mm. Furthermore, the flowers of T. brevibarbatum are mostly borne singly in the axil of each bract; in T. gracile, they are mostly in 3-flowered cymules.
    Distribution
    Possibly confined to the eastern half of Zimbabwe and nearby parts of Mozambique. Mozambique ZIM C, ZIM E, MOZ MS Zimbabwe
    Habit
    Perennial herb with a small woody and somewhat stoloniferous caudex; stems many, tufted from the crown, 70–200 mm long, well branched from the base, shallowly ribbed, leafy. Perennial herb with a small woody and somewhat stoloniferous caudex; stems many, tufted from the crown, 70–200 mm long, well branched from the base, shallowly ribbed, leafy
    Stamens
    Stamens inserted at base of lobes; filaments 0.3–0.5 mm long, almost hidden by anthers; anthers 0.4–0.6 mm long. Stamens inserted at base of lobes; filaments 0.3–0.5 mm long, almost hidden by anthers; anthers 0.4–0.6 mm long
    Pistil
    Style 0.5–1 mm long; stigma reaching about halfway up anthers.
    Fruits
    Fruit c. 3 × 3 mm, pallid, strongly ribbed and reticulate. Fruit c. 3 × 3 mm, pallid, strongly ribbed and reticulate.

    Images

    Distribution

    Native to:

    Mozambique, Zimbabwe

    Thesium brevibarbatum Pilg. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Engler [3176], Zimbabwe K000431470
    Engler [3176], Zimbabwe K000431471 Unknown type material

    First published in Bot. Jahrb. Syst. 40: 57 (1907)

    Accepted by

    • Pope, G.V., Polhill, R.M. & Martins, E.S. (eds.) (2006). Flora Zambesiaca 9(3): 1-277. Royal Botanic Gardens, Kew.

    Literature

    Flora Zambesiaca
    • F.T.A. 6, 1: 416 (1911).
    • Bot. Jahrb. Syst. 40: 57 (1907).
    Kew Backbone Distributions
    • 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