I found two articles using the two methods that may be useful for you:
Šumberová, K., Horáková, V., & Lososová, Z. (2005). Vegetation dynamics on exposed pond bottoms in the Českobudějovická basin (Czech Republic). Phytocoenologia, 35(2-3), 421-448.
Chen, J. H., Miao, S. Y., Huang, L. Y., & Wang, H. L. (2015). Comparative study on the leaf structures of Sonneratia caseolaris and S. apetala. Plant Science Journal, 33(1), 1-8.