👉 An opisthacanthus is a type of plant that includes the following species:
1.
Opisthakantha
- This is a genus of flowering plants in the family Rosaceae, native to South America.
2.
Amaranthus
- Also known as amaranth, is a perennial herbaceous plant with a tubular stem and leaves.
3.
Gymnospermia
- A group of organisms that includes fungi, bacteria, and some