''Pennisetum polystachion'', the mission grass, is a species of grass native to tropical Africa, and is an invasive species in Northern Australia and in Sri Lanka.S. Ranwala, B. Marambe, S. Wijesundara, P. Silva, D. Weerakoon, N. Atapattu, J. Gunawardena, L. Manawadu, G. Gamage
Post-entry risk assessment of invasive alien flora in Sri Lanka-present status, GAP analysis, and the most troublesome alien invaders
''Pakistan Journal of Weed Science Research'', Special Issue, October, 2012: 863-871.

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