Question

Why is serpentina considered as a rare plant?​

Answer 1

A large proportion of Serpentine aster (Symphotricum depauperatum) are considered rare because they occur only in specific habitats that themselves are uncommon. These plants occur in Pennsylvania only in a few sites in Chester and Delaware counties because they support a unique set of nutrient-poor soil.

Answer 2

Explanation: Serpentine aster (Symphotricum depauperatum) A large proportion of state-rare plants are considered rare because they occur only in specific habitats that themselves are uncommon.