Fragilaria constricta f. stricta

Fragilaria constricta f. stricta(A.Cleve) Cleve-Euler

OF Fragilariforma undata(W.Smith) Heudre, C. E. Wetzel & Ector

1953 p.51 fig.362n-p :H59 in RKF2(6):166 fig.674 d,e; KLB91:140 fig.129:2