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

Asteraceae - Gnaphalieae - Pseudognaphalium Kirp.

Description :

  • Annual, biennial or perennial herbs
  • Leaves alternate, sessile, lanceolate, linear-lanceolate or oblanceolate, sometimes decurrent, margins entire, flat or undulate, both surfaces woolly, or glandular above, woolly below (hair type B)
  • Capitula disciform, in small clusters corymbosely or cymosely arranged
  • Involucral bracts in 3 or 4 rows, inner ± equalling or slightly exceeding flowers, white to yellow, often buff or cream; stereome usually divided, rarely undivided ( P. oligandrum )
  • Receptacle smooth or honeycombed, epaleate
  • Florets few to many; female florets more than bisexual florets, corolla yellow, filiform or narrowly tubular; bisexual florets tubular, scarcely broadened above, yellow, 5-lobed; all florets glandular-hairy on backs of lobes
  • Anthers ecalcarate, caudate, tails slightly longer or shorter than filament collar; with small, obtuse or subacute apical appendage; endothecial tissue polarised
  • Style branches truncate and penicillate, with obtuse sweeping hairs
  • Cypselas oblong, either glabrous or with duplex myxogenic hairs; epidermal cells tabular, often imbricate
  • Pappus bristles scabrid, apical cells sometimes inflated, bases cohering by patent cilia
  • x = 7 (1 report)

Nomenclature:

  • Pseudognaphalium Kirp.
    • Kirpicznikov: 33 (1950)
    • Hilliard & Burtt: 204 (1981)
    • Hilliard: 53 (1983)
    • Anderberg: 146 (1991)
    • Anderberg: 362 (1994)

Distribution & Notes:

  • Global : Species ± 90, Africa, Asia, Europe and America
  • Southern Africa : Species 3, widespread

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
  • HILLIARD, O.M. 1983. Asteraceae ( Compositae ), Tribe Inuleae subtribe Gnaphaliinae (first part). Flora of southern Africa 33, 7, 2
  • HILLIARD, O.M. & BURTT, B.L. 1981. Some generic concepts in Compositae - Gnaphaliinae . Botanical Journal of the Linnean Society 82
  • KIRPICZNIKOV, M.E. 1950. Pseudognaphalium . Trudy Botaniceskogo instituta Akademii nauk SSSR. Ser. 1. Flora i sistematika vysših rastenij 9