References
Azolla filiculoides at RBG, Kew. © AC Jermy
This is a very small selection of the vast number of publications on Azolla.
Ashton, P J and Walmsley, R D (1984) The taxonomy and distribution of Azolla species in southern Africa. Bot J Linn Soc 89:239–247
Baars, J R and Caffery, J (2008) Invasive Species Ireland, case study 4, water fern, Azolla filiculoides - Under biological control in Ireland. 8pp. Date of access 8/11/2010
Centre for Ecology and Hydrology (CEH), 2004 Information sheet 22: Azolla filiculoides Water fern. Date of access 8/11/2010
Dunham, D G and Fowler, K et al (1987) Azolla Utilization: Proceedings of the workshop on Azolla Use, Fuzhou, Fujian, China, 31 March–5 April 1985. International Rice Research Institute, Philippines. 296pp
Hussner, A (2010): NOBANIS - Invasive Alien Species Fact Sheet - Azolla filiculoides. From: Online Database of the North European and Baltic Network on Invasive Alien Species - NOBANIS. Date of access 8/11/2010
Lumpkin, T A (1993) Azollaceae Pp 338–342 In: Flora of North America Editorial Committee (eds ) Flora of North America North of Mexico. Vol 2: Pteridophytes and Gymnosperms. New York and Oxford
Lumpkin, T A and Plucknett, D L (1980) Azolla: Botany, Physiology, and Use as a Green Manure. Economic Botany 34(2): 111–153
Pereira, A L, Teixeira, G , Sevinate-Pinto, I , Antunes, T and Carrapiço, F (2001) Taxonomic re-evaluation of the Azolla genus in Portugal. Plant Biosystems 135(3): 285–294
Schneller, J J (1990) Azollaceae Pp 57–60 In: Kubitzki, K (ed ), Kramer, K U and Green, P S (volume eds ) The families and genera of vascular plants, Vol 1: Pteridophytes and Gymnosperms. Springer-Verlag, Berlin
Wagner, G M (1997) Azolla: A Review of its Biology and Utilization. The Botanical Review 63(1): 1–26
