Dactyloctenium Willd.
Dactyloctenium is a genus with 14 species, all native in pan (sub-) tropical regions of the world (Nightingale & Weiller 2005). Several species are weedy and have been recorded outside their native range, for instance in North America (Hatch 2003). Spikelets of species of Dactyloctenium have curved awns and easily adhere to cloths, fur, etc. As a result, at least two species (D. aegyptium and especially D. radulans) were among the species formerly found as wool aliens in many European countries, also in Belgium (e.g. Issler 1934, Hylmö 1947, Fasseaux 1951, Lange & al. 1954, Ryves & al. 1996, etc.).
The affinities of Dactyloctenium are still uncertain. Morphologically it shows some resemblance with Eleusine Gaertn. and both belong in tribe Cynodonteae Dumort. However, its exact placement remains obscure (Peterson & al. 2012, Peterson & al. 2015, Soreng & al. 2015).
Additional alien: Dactyloctenium radulans (R. Brown) Beauv. (Aus., wool alien),
References
Clayton W.D., Phillips S.M. & Renvoize S.A. (1974) Flora of Tropical East Africa. Gramineae (Part 2) (ed. R.M. Pohill). Whitefriars Press, Ltd., London, England. 373 pp.
Fasseaux W. (1951) Les Dactyloctenium adventices en Belgique. Bull. Soc. Roy. Bot. Belg. 84: 153-155.
Hatch S.L. (2003) Dactyloctenium. In: Barkworth M.E. & al. (eds.), Flora of North America north of Mexico, vol. 25: 112-114. Oxford University Press, New York-Oxford. [available online at: http://herbarium.usu.edu/webmanual/]
Hylmö B. (1947) Notiser om ullfloran vid Lackalänga. Bot. Notiser 81: 81-82.
Issler M.E. (1934) Plantes importées par l’industrie lainière. Bull. Soc. Hist. Nat. Colmar…: 151-159.
Koekemoer M. (1991) Dactyloctenium. Pp. 99-101. In: Gibbs Russell G.E. & al. (eds.), Grasses of southern Africa. National Botanic Gardens, Botanical Research Institute, Pretoria, Republic of South Africa: 437 pp.
Lange T., Flinck K.E. & Hylmö B. (1954) Om ullfloran vid Lackalänge i Skåne. Bot. Notiser 1954(2): 186-191.
Nightingale M.E. & Weiller C.M. (2005) Dactyloctenium. In: Mallett K. (ed.), Flora of Australia, vol. 44B. Melbourne, ABRS / CSIRO Publishing: 315-320.
Peterson P.M., Romaschenko K. & Arrieta Y.H. (2015) A molecular phylogeny and classification of the Eleusininae with a new genus, Micrachne (Poaceae: Chloridoideae: Cynodonteae). Taxon 64(3): 445-467. [available online at: https://www.researchgate.net/publication/271851457_A_molecular_phylogeny...
Peterson P.M., Romaschenko K., Snow N. & Johnson G.P. (2012) A Molecular Phylogeny and Classification of Leptochloa (Poaceae: Chloridoideae: Chlorideae) Sensu Lato and Related Genera. Annals of Botany 109(7): 1317-1330. [available online at: http://aob.oxfordjournals.org/content/109/7/1317.full.pdf]
Ryves T.B., Clement E.J. & Foster M.C. (1996) Alien grasses of the British Isles. BSBI, London: XX + 181 p.
Soreng R.J., Peterson P.M., Romaschenko K., Davidse G., Zuloaga F.O., Judziewicz E.J., Filgueiras T.S., Davis J.I. & Morrone O. (2015) A worldwide phylogenetic classification of the Poaceae (Gramineae). Journal of Systematics and Evolution 53: 117-137. [available online at: https://fr.scribd.com/doc/314836070/A-worldwide-phylogenetic-classi-%EF%...