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

Asteraceae - Gnaphalieae - Tenrhynea Hilliard & B.L.Burtt

Description :

  • Shrubby perennial; branches closely leafy
  • Leaves alternate, lanceolate, margins entire, sessile, bases decurrent in long narrow wings, green above drying grey, with thin skin-like indumentum, white-tomentose below (hair type B)
  • Capitula disciform, cylindric, in small terminal clusters, often further aggregated into spreading corymbose panicle
  • Involucral bracts in several rows, imbricate, graded, inner ones with stereome undivided, tips shortly exceeding flowers, radiating, opaque milk-white or occasionally pink
  • Receptacle flat, paleate; paleae resembling inner involucral bracts
  • Florets 17-26, 3-11 female, corolla purple, narrowly tubular or filiform; 10-17 bisexual, outnumbering female flowers, corolla purple, tubular below, campanulate above, 5-lobed, all lobes with glandular hairs on backs
  • Anthers ecalcarate, caudate, tails shorter or longer than filament collar; with lanceolate apical appendage; endothecial tissue polarised
  • Style branches with slightly rounded tips, with short, obtuse, sweeping hairs extending briefly down backs
  • Cypselas oblong, with elongate duplex hairs with basal swelling cushion, myxogenic
  • Pappus bristles scabrid above, cilia ± fused, shaft scabridulous, base nude, not cohering, caducous

Nomenclature:

  • Tenrhynea Hilliard & B.L.Burtt
    • Hilliard & Burtt: 232 (1981)
    • Hilliard: 57 (1983)
    • Anderberg: 140 (1991)
    • Anderberg: 363 (1994)
  • Rhynea DC.
    • Candolle: 154 (1838), not of Scop.
    • Harvey: 204 (1865)
    • Hilliard: 134 (1977)
    • Hilliard & Burtt: 374 (1973)
    • Hilliard & Burtt: 196 (1981)

Distribution & Notes:

  • Southern Africa : Monotypic: Tenrhynea phylicifolia (DC.) Hilliard & B.L.Burtt, endemic, Northern Province, Mpumalanga, Swaziland, KwaZulu-Natal and Eastern Cape

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
  • CANDOLLE, A.P. DE. 1838. Compositae . Prodromus 6. Treuttel & Würtz, Paris
  • HARVEY, W.H. 1865. Compositae . Flora capensis 3
  • HILLIARD, O.M. 1977. Compositae in Natal . University of Natal Press, Pietermaritzburg
  • 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. 1973. Notes on some plants of southern Africa chiefly from Natal. Notes from the Royal Botanic Garden Edinburgh 32
  • HILLIARD, O.M. & BURTT, B.L. 1981. Some generic concepts in Compositae - Gnaphaliinae . Botanical Journal of the Linnean Society 82