Sagittaria (Alismataceae) are aquatic herbs with 40 described species and eight infraspecific taxa. The genus has a natural distribution throughout North and South America, Europe, Africa and Asia, but species diversity is highest in the neotropics, temperate North America and eastern Asia. The name Sagittaria is derived from the Latin word sagitta, meaning ‘arrow’, which refers to the arrowhead shape of the emergent leaf blades produced by many species.
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Adair, R., Keener, B., Kwong, R., Sagliocco, J. and Flower, G. (2012b). The Biology of Australian weeds 60. Sagittaria platyphylla (Engelmann) JG Smith and Sagittaria calycina Engelmann. Plant Protection Quarterly 27(2), 47-58.