Compare

Psammothidium scoticum valves have a slightly wider axial area, more linear valves, striae of central area on raphe valve more similar in length, larger central area on raphe valve, and smaller areolae.

LM scalebar = 10 µm
Psammothidium sacculum LM5 Psammothidium sacculum LM3 Psammothidium sacculum LM4 Psammothidium sacculum LM6 Psammothidium sacculum LM2 Psammothidium sacculum LM7 Psammothidium sacculum LM1
Length Range
8-13 µm
Width Range
3.9-4.4 µm
Striae in 10 µm
26-30

Psammothidium scoticum

(Flower and Jones) Bukht. and Round 1996

Gsl00810 15A Ed Gsl00810 15B Ed Psammothidium scoticum LM2 Psammothidium scoticum LM3 Psammothidium scoticum LM2 Psammothidium scoticum LM1
Length Range
7.5-12 µm
Width Range
3.9-4.6 µm
Striae in 10 µm
27-30