Thesium multiramulosum Pilg.

First published in Bot. Jahrb. Syst. 40: 57 (1907)
This species is accepted
The native range of this species is Tanzania to S. Africa. It is a perennial and grows primarily in the seasonally dry tropical biome.

Descriptions

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

Type
Lectotype, chosen here: Zimbabwe, Mutare (Umtali), “Baumsteppe”, 1200 m, ix.1905, Engler 3146 (B; K, fragment).
Morphology Reproductive morphology Flowers Pedicel
Pedicels/peduncles (lowermost) 2–4 mm long or occasionally longer
Morphology Reproductive morphology Flowers Gynoecium Style
Style 0.8–1.5 mm long; stigma reaching base or apex of anthers
Morphology Reproductive morphology Fruits
Fruit c. 3.5 × 3.5 mm, light yellowish-brown, strongly ribbed and reticulate. Fruit c. 3.5 × 3.5 mm, light yellowish-brown, strongly ribbed and reticulate.
Ecology
Grassland; c. 200–1400 m.
Note
Easily recognized among species with perianth lobes bearded from the apex by its stems, simple below, branching above into a lax inflorescence loosely panicled, scattered leaves and very small bracts and bracteoles.
Distribution
Also in Tanzania and South Africa (Limpopo, Mpumalanga and KwaZulu-Natal Provinces). Mozambique Malawi ZIM E, MAL S, MOZ M Zimbabwe
Morphology General Habit
Perennial herb with woody caudex; stems 1 or a few from crown, up to 1 m tall, c. 5 mm in diameter near base, either simple below, virgately branched above, or branching from the base when regenerating quickly after fire, lightly ribbed by raised vascular strands terminating in midrib of leaves and bracts, nude or with a few scattered reduced or scale-like leaves below, remotely leafy above. Perennial herb with woody caudex; stems 1 or a few from crown, up to 1 m tall, c. 5 mm in diameter near base, either simple below, virgately branched above, or branching from the base when regenerating quickly after fire, lightly ribbed by raised vascular strands terminating in midrib of leaves and bracts, nude or with a few scattered reduced or scale-like leaves below, remotely leafy above
Morphology Leaves
Leaves c. 7–25 × 0.8–1 mm, smaller upwards and passing into bracts, linear, apex apiculate, flat ventrally with raised midrib, rounded dorsally. Leaves c. 7–25 × 0.8–1 mm, smaller upwards and passing into bracts, linear, apex apiculate, flat ventrally with raised midrib, rounded dorsally
Morphology Reproductive morphology Flowers
Flowers either solitary or in 3-flowered cymules racemosely arranged at branchlet tips, the whole forming a spreading panicle, c. 8–24 flowers or cymules in each inflorescence, distant. Flowers either solitary or in 3-flowered cymules racemosely arranged at branchlet tips, the whole forming a spreading panicle, c. 8–24 flowers or cymules in each inflorescence, distant
Morphology Reproductive morphology Inflorescences Bracts
Bracts (lowermost) 2–2.5 × 0.6 mm, leaf-like, adnate to base of pedicel/peduncle; bracteoles 2, 1–1.5 × 0.4–0.5 mm. Bracts (lowermost) 2–2.5 × 0.6 mm, leaf-like, adnate to base of pedicel/peduncle; bracteoles 2, 1–1.5 × 0.4–0.5 mm
Morphology Reproductive morphology Flowers Pedicels and Peduncles
Pedicels/peduncles (lowermost) 2–4 mm long or occasionally longer.
Morphology Reproductive morphology Flowers Perianth
Perianth yellowish-green; tube 1–1.2 mm long, external glands inconspicuous, ellipsoid; lobes 1.4–1.6 × 0.8–1.1 mm, triangular, subacute, densely white-bearded from apex. Perianth yellowish-green; tube 1–1.2 mm long, external glands inconspicuous, ellipsoid; lobes 1.4–1.6 × 0.8–1.1 mm, triangular, subacute, densely white-bearded from apex
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens inserted at base of perianth lobes; filaments 0.2–0.5 mm long, almost hidden by anthers; anthers 0.6–0.8 mm long. Stamens inserted at base of perianth lobes; filaments 0.2–0.5 mm long, almost hidden by anthers; anthers 0.6–0.8 mm long
Morphology Reproductive morphology Flowers Gynoecium Pistil
Style 0.8–1.5 mm long; stigma reaching base or apex of anthers.
[FZ]

Sources

  • Flora Zambesiaca

    • Flora Zambesiaca
    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • Herbarium Catalogue Specimens

    • 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 Vascular Plants 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0
  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0