Compare Stephanodiscus medius
Compare
Stephanodiscus alpinus has triseriate fascicles at the margin and a higher density of fascicles (12 to 14 in 10 µm).
Stephanodiscus oregonicus has a higher number of areolae (3 to 9) per fascicle at the margin and a lower density of fascicles (3 to 4 in 10 µm).
LM scalebar = 10 µm
Diameter
9.2-35.0 µm
9.2-35.0 µm
Striae in 10 µm
6-10 based on circumferential density
6-10 based on circumferential density
