Hypnea musciformis (Wulfen) Lamouroux var. nuda Harvey, 1834a: 154 (type locality: Mauritius).
INDIAN OCEAN DISTRIBUTION: Mauritius.
Note: J. Agardh (1851 [1851–1863]: 443, 448) thought that this variety might be referable in part to its own species, in part to Hypnea divaricata (C. Agardh) Greville. It is one of several varieties stated by Mshigeni & D. Chapman (1994: 260) "to fall within the range of morphological variability'' of H. cervicornis and H. valentiae.