Staurosira
First Prev Records 1 - 6 of
6 Next Last
First Prev Records 1 - 6 of
6 Next Last
Fragilariaceae: Staurosira
Cells solitary or forming ribbon-like or zigzag colonies.
Valves oval, cruciform, elliptic or triangular.
Sternum variable in width.
Striae formed by rounded or elliptical areolae.
Rimoportulae absent.
Apical porefield variable.
Spines hollow, spatulate or dichotomous.
Mantle plaques usually absent.
Girdle bands open, not perforated.