You have discovered two very different-looking plants, which actually turn out to be of the same species as determined by comparison of the genome sequences. Which is the best explanation for this apparent paradox?

To understand what is going on we need to understand two concepts:

Genotype is the particular set of genes carried by an individual Phenotype is the observable characteristic of an individual possesses and is the product of genotype and environmental factors.

Considering this information we can conclude that even though both plans share their genome sequences (genotype), they present different phenotypes, this could be the consequence of being exposed to different conditions such as nutrients, sun, water, etc.

I hope you find this information useful and interesting! Good luck!