Spaulding, S.,
Edlund, M.
(2009).
Gomphoneis.
In Diatoms of North America.
Retrieved October 09, 2024, from https://diatoms.org/genera/gomphoneis
Asymmetric Biraphid
Gomphoneis
Valves clavate
Pseudoseptae present
Longitudinal lines may be present
Striae multiseriate
Valves are clavate in valve view and cuneate in girdle view. Valves are symmetric to the apical axis. Two distinct groups are currently included within the genus Gomphoneis.
One group contains species (including G. herculeana and G. eriense) with multiseriate striae crossed by longitudinal lines and with stigmata. The longitudinal lines...