Critical Distance for Branch Insertion in Plant Morphology: Understanding R*(ℓ) in Equation (1)

In the study of plant morphology, understanding branching patterns is crucial. Equation (1) introduces the function R*(ℓ), which describes the relationship between branch length (ℓ) and other factors influencing plant growth. The parameter 'dc' represents the critical distance from the main stem to the point where a new branch emerges. Specifically, 'dc' defines the insertion point for the upper branch of the R*(ℓ) function. This critical distance plays a significant role in determining the overall shape and structure of the plant.