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

Asteraceae - Gnaphalieae - Pentatrichia Klatt

Description :

  • Shrubs, glandular pilose on young parts
  • Leaves alternate, petiolate or sessile, digitately lobed, cordate at base, pubescent when young
  • Capitula discoid or radiate, solitary, pedunculate, sometimes 2 together or corymbose
  • Involucre campanulate; bracts in 7 rows, linear, acute, scarious, glabrous; stereome undivided
  • Receptacle flat, honeycombed, epaleate
  • Ray florets , when present, female, whitish or yellow, pistillate, in 1 row; staminodia 0
  • Disc florets bisexual, fertile; corolla yellow, tube cylindric, glabrous, with 5 small, lanceolate lobes; lobes strongly retrofracted
  • Anthers ecalcarate, caudate; with lanceolate, apical appendage; endothecial tissue polarised
  • Style bifid; style branches obtuse with obtuse sweeping hairs not reaching furcation; stigmatic surface basally separated but apically confluent
  • Cypselas sparsely hairy with elongated twin hairs and glandular hairs
  • Pappus of few, free, barbellate bristles in 1 row and outer row of short, triangular scales

Nomenclature:

  • Pentatrichia Klatt
    • Klatt: 436, t. 10 (1895)
    • Merxmüller: 138 (1967)
    • Anderberg: 43 (1991)
    • Anderberg: 325 (1994)

Distribution & Notes:

  • Southern Africa : Species 4, endemic, Namibia, Mpumalanga, Northern and Western 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
  • KLATT, F. 1895. Compositae . Bulletin de l'Herbier Boissier 3
  • MERXMÜLLER, H. 1967. Asteraceae . Prodromus einer Flora von Südwestafrika 139