[1] Furthermore, the distribution of the two species differs with S. comparoides found more on mountainous slopes of the eastern Western Cape Province into adjacent regions of the Eastern Cape Province, whereas S. compar is found farther to the west and along the south-western coast of South Africa.
[1] Schoenus arenicola also differs in its distribution, as it is endemic to the coarse-textured soils of the south-western coast of South Africa.
It appears that part of this problem is caused by the tendency of the southern African Schoenus to form hybrids with each other.
[2] Southern African Schoenus were once classified as Tetraria; however, based on molecular and morphological differences, we now know that the two groups are evolutionary distinct.
[1] Observations of this species have been documented from low to medium elevation mountain slopes on various parent materials.