Not an accepted name (status: unknown). The accepted name is Rostellularia quinqueangularis (J.Koenig ex Roxb.) Nees, 1847.

Rostellularia vahlii var. rupicola J.L.Ellis, 1972 2% complete

No common name

Bull. Bot. Surv. India 11: 435 (1969 publ. 1972)

There is no corrections for Rostellularia vahlii var. rupicola yet.