Largeleaf pennywort ( Hydrocotyle bonariensis) produces one large, rounded leaf at the end of a long stem. Because it spreads vegetatively by sending out runners, it gathers in large patches that may consist of thousands of genetically identical individuals. A separate stem rises from each individual to form a branched grouping of small flowers.
References
Evans, J. (1992). The Effect of Local Resource Availability and Clonal Integration on Ramet Functional Morphology in Hydrocotyle bonariensis. Oecologia, 89(2), 265-276.
