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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Asteraceae - Gnaphalieae - Anisothrix O.Hoffm.

Description:

  • Shrublets or shrubs, glabrous
  • Leaves alternate, sessile, small, glabrous or with scattered glandular hairs, margins entire or dentate to almost pinnatifid
  • Capitula discoid, solitary, terminal
  • Involucre cyathiform to slightly campanulate; bracts in many rows, imbricate; stereome undivided
  • Receptacle flat, epaleate
  • Disc florets bisexual and fertile; corolla yellow; tube with narrow, cylindric, 5-lobed limb; lobes strongly retrofract when dry; glandular-hairy or glabrous
  • Anthers ecalcarate, caudate; apical appendage acute, flat; endothecial tissue polarised
  • Style bifid; style branches obtuse with obtuse sweeping hairs dorsally, not reaching furcation; stigmatic surface basally separated but apically confluent
  • Cypselas cylindric, terete, sparsely to moderately hairy with elongated twin hairs
  • Pappus of few, free barbellate bristles in 1 row and outer row of narrow scales
  • x = 7

Nomenclature:

  • Anisothrix O.Hoffm.
    • Hoffmann: 129 (1898)
    • Anderberg: 363 (1988)
    • Anderberg: 46 (1991)
    • Anderberg: 323 (1994)

Distribution & Notes:

  • Southern Africa: Species 2: Anisothrix integra (Compton) Anderb. and A. kuntzei O.Hoffm., endemic, Western Cape, rare

References:

  • ANDERBERG, A.A. 1988. The genus Anisothrix O.Hoffm. (Compositae-Inuleae). Botanische Jahrbücher 109,3
  • 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
  • HOFFMANN, K.A.O. 1898. Anisothrix. In O. Kuntze, Revisio generum plantarum 3. Charles Klincksieck, Paris

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