Species Echiostachys incanus
Pictures from Observations
Etymology of Echiostachys:
Gk. echis = viper; stachys = spike. The spike resembles that of Echium (q.v.). (Not explained by author).
Etymology of incanus:
From the Latin incanus = 'grey'
J. Linn. Soc. Bot. 49: 446 (1934)