e-Key v3 - Teucrium
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Lamiaceae - Teucrioideae - Teucrium L.

Description :

  • Herbs, undershrubs or shrubs
  • Leaves usually toothed or ± deeply lobed
  • Inflorescences terminal, cymes 1-flowered with peduncles usually much shorter than leaves or peduncles, usually 2 per node, 3-7-flowered, cymes often as long as or longer than leaves; bracts leaf-like, usually becoming smaller towards apex of inflorescence
  • Calyx ± as long as corolla tube, subequally 5-toothed
  • Corolla small, white, 5-lobed, lowermost lobe the largest, longer than tube, giving a 1-lipped appearance; tube short, hairy in throat
  • Stamens 4, ascending-arcuate between two upper corolla lobes, well exserted; filaments thread-like, villous at base; anthers 2-thecous
  • Ovary shortly 4-lobed; style slightly exceeding stamens, terete, 2-fid, lobes subequal
  • Nutlets obovoid, reticulate-rugose, attached by an oblique or lateral areole which extends beyond middle
  • x = 8, 10, 13 (9, 17) (aneuploids, polyploidy)

Nomenclature:

  • Teucrium L.
    • Linnaeus: 562 (1753)
    • Linnaeus: 247 (1754)
    • Bentham: 574 (1848)
    • Briquet: 210 (1895)
    • Baker: 500 (1900)
    • Skan: 384 (1910)
    • Codd: 9 (1985)

Distribution & Notes:

  • Global : Species 100, widely distributed over the temperate and warmer regions of the world, mainly in the northern hemisphere
  • Southern Africa : Species 3, the northern provinces, Swaziland, KwaZulu-Natal, Eastern Cape and all along the coast to Bredasdorp (S Western Cape)

References:

  • BAKER, J.G. 1900. Verbenaceae , Labiatae . Flora of tropical Africa 5
  • BENTHAM, G.1848. Labiatae . In A. de Candolle, Prodromus 12. Victor Masson, Paris
  • BRIQUET, J. 1895-1897. Labiatae . Die natürlichen Pflanzenfamilien 4,3a
  • CODD, L.E. 1985. Lamiaceae . Flora of southern Africa 28
  • LINNAEUS, C. 1753. Species plantarum . Salvius, Stockholm
  • LINNAEUS, C. 1754. Genera plantarum , edn 5. Salvius, Stockholm
  • SKAN, S.A. 1910. Labiatae . Flora capensis 5,1