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

Asteraceae - Heliantheae - Enydra Lour.

Description :

  • Erect or prostrate, marsh or aquatic herbs
  • Leaves opposite, sessile or subsessile, simple, lanceolate, margins entire or remotely denticulate
  • Capitula radiate, axillary, sessile or shortly pedunculate
  • Involucral bracts 4, leafy, in 2 rows of opposite pairs
  • Receptacle convex or conical; paleae sheathing florets
  • Ray florets female; corolla pale yellowish, strap-shaped, short and broad
  • Style branches linear
  • Disc florets bisexual or functionally male; corolla pale yellowish, tubular, widening above, 5-lobed
  • Anthers with deltoid apical appendage, bases obtuse
  • Style branches oblong, flattened, truncate and shortly penicillate, with minute sweeping hairs outside and marginal stigmatic papillae
  • Cypselas surrounded by persistent paleae, usually somewhat compressed
  • Pappus 0
  • x = 11 (1 report)

Nomenclature:

  • Enydra Lour.
    • Loureiro: 510 (1790)
    • Oliver & Hiern: 372 (1877)
    • Wild: 35 (1967)
    • Hilliard: 302 (1977)
    • Karis & Ryding: 610 (1994)

Distribution & Notes:

  • Global : Species 10, pantropical
  • Southern Africa : Species 1: Enydra fluctuans Lour., KwaZulu-Natal

References:

  • HILLIARD, O.M. 1977. Compositae in Natal . University of Natal Press, Pietermaritzburg
  • KARIS, P.O. & RYDING, O. 1994. Tribes Helenieae and Heliantheae . In K. Bremer, Asteraceae , cladistics and classification . Timber Press, Portland, Oregon
  • LOUREIRO, J. DE. 1790. Flora cochinchinensis . Academy, Lisbon
  • OLIVER, D & HIERN, W.P. 1877. Compositae . Flora of tropical Africa 3
  • WILD, H. 1967. The Compositae of the Flora zambesiaca area, 1. Kirkia 6