1. Family: Santalaceae R.Br.
    1. Genus: Thesium L.
      1. Thesium pygmaeum Hilliard

        This species is accepted, and its native range is Zimbabwe (Chimanimani Mountains).

    [FZ]

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

    Type
    Type:Zimbabwe, Chimanimani Distr., Chimanimani Mts., Bundi R., approx. halfway between mountain hut and southern lakes, c. 1380 m, fl. & fr. 26.ix.1966, Simon 839 (K, holotype; LISC; SRGH).
    Style
    Style 0.2–0.4 mm long; stigma reaching top of anthers
    Note
    Thesium pygmaeum is allied to T. nigricans from which it differs in its shorter stature (c. 100–150 mm, not 300 mm–1 m), stems lacking ribs, and smaller flowers; the difference in flower size is very striking when the comparison is confined to specimens of T. nigricans from the Chimanimani Mts. (also on quartzite, up to 2285 m): perianth tube 0.4–0.6 (versus 0.7–1) mm, perianth lobes 0.6 × 0.4–0.6 (versus 1–1.5 × 0.7–0.8) mm, style 0.2–0.4 (versus 1.1–1.8) mm.
    Distribution
    ZIM E Zimbabwe Probably endemic to quartzite outcrops on the Chimanimani Mts. and so far known only from the environs of the Bundi R.; c. 1460–1640 m.
    Habit
    Perennial herb with small woody caudex; stems many from the crown, 100–150 mm tall, decumbent or erect, profusely divaricately branched, not ribbed, sometimes minutely scabridulous all over, leafy, whole plant drying blackish. Perennial herb with small woody caudex; stems many from the crown, 100–150 mm tall, decumbent or erect, profusely divaricately branched, not ribbed, sometimes minutely scabridulous all over, leafy, whole plant drying blackish
    Leaves
    Leaves ascending-recurved to spreading, c. 7–14 × 0.7–1 mm, smaller upwards and passing into bracts, linear, apiculate, ventral surface flat, dorsal ± rounded, thick and fleshy, sometimes minutely scabridulous all over. Leaves ascending-recurved to spreading, c. 7–14 × 0.7–1 mm, smaller upwards and passing into bracts, linear, apiculate, ventral surface flat, dorsal ± rounded, thick and fleshy, sometimes minutely scabridulous all over
    Flowers
    Flowers solitary in axils of bracts, 1–5 racemosely arranged at branchlet apices, the whole forming a profusely branched panicle. Flowers solitary in axils of bracts, 1–5 racemosely arranged at branchlet apices, the whole forming a profusely branched panicle
    Bracts
    Bracts (lowermost) 2–10 × 0.5–1 mm, linear, leaf-like, adnate to entire pedicel; bracteoles 2, similar to bracts but smaller. Bracts (lowermost) 2–10 × 0.5–1 mm, linear, leaf-like, adnate to entire pedicel; bracteoles 2, similar to bracts but smaller
    Pedicel
    Pedicels up to 2 mm long or flowers sessile. Pedicels up to 2 mm long or flowers sessile
    Perianth
    Perianth colour unknown; tube 0.4–0.6 mm long, external glands conspicuous, ellipsoid; lobes c. 0.6 × 0.4–0.6 mm, triangular, subacute, glabrous. Perianth colour unknown; tube 0.4–0.6 mm long, external glands conspicuous, ellipsoid; lobes c. 0.6 × 0.4–0.6 mm, triangular, subacute, glabrous
    Stamens
    Stamens inserted at base of lobes; filaments c. 0.2 mm long, nearly hidden by anthers; anthers c. 0.25 mm long. Stamens inserted at base of lobes; filaments c. 0.2 mm long, nearly hidden by anthers; anthers c. 0.25 mm long
    Pistil
    Style 0.2–0.4 mm long; stigma reaching top of anthers.
    Fruits
    Fruit c. 2 × 2 mm, red-brown, with ribs and reticulations, these lightly raised. Fruit c. 2 × 2 mm, red-brown, with ribs and reticulations, these lightly raised.

    Images

    Distribution

    Native to:

    Zimbabwe

    Thesium pygmaeum Hilliard appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 1989 Simon, B.K. [839], Zimbabwe K000431522 holotype

    First published in Edinburgh J. Bot. 48: 54 (1991)

    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
    • Edinb. J. Bot. 48: 54 (1991). TAB. 45, fig. B.
    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