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

Asteraceae - Gnaphalieae - Stoebe L.

Description :

  • Single or multi-stemmed, robust or weak shrubs or dwarf shrubs, up to 1.5 m tall, occasionally prostrate; branches densely or sparsely leafy, tomentose or glaucous
  • Leaves small, alternate, often ericoid and twisted, broadly cymbiform, linear or narrowly triangular, adaxial surface villous or tomentose, abaxial surface glabrous or covered in a matted layer of hairs, tips rounded mucronate or pungent, margins slightly or strongly involute
  • Synflorescences tight, globose or cylindrical, terminal heads, or an open or dense plumose arrangement of capitula
  • Capitula discoid, 1-flowered
  • Involucral bracts in a few rows, innermost dry and membranous, outermost shorter, often leafy
  • Receptacle stalk-like, epaleate
  • Ray florets 0
  • Disc florets bisexual, tubular, white, pink or wine-red, 5-lobed; lobes erect or spreading
  • Anthers apically acuminate, basally tailed
  • Style bifid, branches truncate, pencilled at tips
  • Nectary a small disk between style and cypsela or 0
  • Cypselas small, with or without a rim-like annulus, smooth or tomentose, trichomes short with tips rounded or longer, more flexible with tips acuminate
  • Pappus of 10-26 capillary bristles, plumose in upper part, fused in a ring at base, rarely free, 0 in Stoebe montana and S. schultzii
  • x = 8 (1 report)

Nomenclature:

  • Stoebe L.
    • Linnaeus: 831 (1753)
    • Harvey: 279 (1865)
    • Levyns: 1 (1937)
    • Anderberg: 77 (1991)
    • Anderberg: 334 (1994)
  • Eremanthis Cass.
    • Cassini: 64 (1827).
  • Perotriche Cass.
    • Cassini: 75 (1818).
  • Seriphium Less.
    • Lessing: 346 (1832)

Distribution & Notes:

  • Global : Species 25, tropical and southern Africa and Madagascar
  • Southern Africa : Species 20 in Northern, Western and Eastern Cape, Stoebe plumosa (L.) Thunb. widespread northwards to Namibia and Zimbabwe

References:

  • ANDERBERG, A.A. 1991. Taxonomy and phylogeny of the tribe Gnaphalieae ( Asteraceae ). Opera Botanica 104
  • ANDERBERG, A.A. 1994. Tribes Inuleae , Plucheeae , Gnaphalieae . In K. Bremer, Asteraceae , cladistics and classification . Timber Press, Portland, Oregon
  • CASSINI, A.H.G. DE. 1818. Aperçu des genres ou sous-genres nouveaux formés par M. Henri Cassini dans la famille des Synanthérées. Bulletin des sciences de la Société Philomatique de Paris 10
  • CASSINI, A.H.G. DE. 1827. Cassini on Compositae . Dictionnaire des sciences naturelles 51. Ed. F. Cuvier. edn 2. Le Normant, Paris
  • HARVEY, W.H. 1865. Compositae . Flora capensis 3
  • LESSING, C.F. 1832. Synopsis generum Compositarum . Duncker & Humblot, Berlin
  • LEVYNS, M.R. 1937. A revision of Stoebe L. Journal of South African Botany 3
  • LINNAEUS, C. VON. 1753. Species plantarum . Laurentius Salvius, Stockholm