Alternanthera Forskâl

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1964, Flora Europaea - Volume 1. Lycopodiaceae to Platanaceae, Cambridge University Press : 110

4. Alternanthera Forskâl 1

Leaves opposite. Inflorescence capitate, terminal or axillary. Perianth-segments 5, free. Stamens 2-5; filaments connate below into a tube. Fruits not deflexed.

A number of species, beside the following, occur as casuals. Literature: P. Aellen in Hegi, III. Fl. Mitteleur. ed. 2, 3 (2): 523-8 (1959). S. J. van Ooststroom & Th. J. Reichgelt , Gorteria 1: 2-6 (1961).

1 Annual; leaves linear; bracteoles and outer perianth-segments not pungent 3. nodiflora 1 Perennial; leaves ovate or obovate; bracteoles and outer perianth-segments pungent

2 Twooftheouter perianth-segmentswithpointsc.| as longas the whole; filament about as long as anther 1. pungens 2 Two of the outer perianth-segments with points not more than yj as long as the whole; filament about twice as long as anther 2. peploides