Eleocharis rostellata (Torrey) Torrey16 of 20
October 2, Quivett Creek Conservation Area, Dennis
saltmarsh spikerush, beaked spikerush
Achenes are shiny, trigonous (three-sided), each with stiff bristles and a relatively tall and narrow tubercle confluent with
the summit of the achene. It is the shape of the tubercle that has become a critical diagnostic character in spike-rushes.