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

Asteraceae - Anthemideae - *Tanacetum L.

Description :

  • Perennial herbs
  • Leaves alternate, petiolate, pinnatifid to pinnatisect, glandular-punctate, densely silvery-sericeous
  • Capitula radiate, solitary
  • Involucral bracts in 3 rows, sometimes with dark brown margins
  • Receptacle flat or convex, epaleate
  • Ray florets female or neuter; lamina white
  • Disc florets bisexual, with yellow corolla, 5-lobed
  • Anthers ecalcarate and ecaudate
  • Cypselas oblong, 5-7-ribbed, often with sessile glands
  • Pappus an irregularly lobed corona
  • x = 9 (7, 8) (aneuploids, polyploidy, B-chromosomes)

Nomenclature:

  • *Tanacetum L.
    • Linnaeus: 1028 (1753)
    • Heywood: 169 (1976)
    • Bremer & Humphries: 100 (1993)
    • Bremer: 454 (1994)

Distribution & Notes:

  • Global : Species ± 152, Europe, Asia and North Africa
  • Southern Africa : Species 1: * Tanacetum cinerariifolium (Trevir.) Sch.Bip., widely cultivated

References:

  • BREMER, K. 1994. Asteraceae , cladistics & classification . Timber Press, Portland, Oregon
  • BREMER, K. & HUMPHRIES, C. 1993. Generic monograph of the Asteraceae - Anthemideae . Bulletin of the Natural History Museum, Botany Series 23
  • HEYWOOD, V.H. 1976. Leucanthemum , Tanacetum . Flora europaea 4
  • LINNAEUS, C. VON. 1753. Species plantarum . Laurentius Salvius, Stockholm