Thank you for the additional and most excellent photo. There are several scientific papers that explain the difficulty in differentiating between Ludiwigia grandiflora and L. hexipetala. One would need to measure the petal length, the sepal length and look at the chromosomes. One a hexaploid and one is a decaploid. http://www.guynesom.com/Ludwigiagrandiflora.pdf
To add to the confusion, there are also naturally-occurring hybrids of the two. This link leads to an explanation of how closely we must look to identify Ludiwigia while in the field: https://plants.ifas.ufl.edu/wp-content/uploads/files/caip/pdfs/LudwigiaIDGuide.pdf On Monday, January 14, 2019 at 12:06:25 AM UTC-5, Aarti S. Khale wrote: > > Seen near a water body in Atlanta during my visit in Oct,18. > For Species id please. > Aarti > -- You received this message because you are subscribed to the Google Groups "efloraofindia" group. To unsubscribe from this group and stop receiving emails from it, send an email to indiantreepix+unsubscr...@googlegroups.com. To post to this group, send an email to indiantreepix@googlegroups.com. Visit this group at https://groups.google.com/group/indiantreepix. For more options, visit https://groups.google.com/d/optout.
