Valves of Delicatophycus canadensis are lunate in shape and smaller. Delicatophycus alpestris and D. montana have wider apices and narrower axial areas.

LM scalebar = 10 µm
Length Range
20-49.5 µm
Width Range
4.7-7.4 µm
Striae in 10 µm
17-24 dorsal, 19-27 ventral
Delicata delicatula LM1
Delicata delicatula LM3
Delicata delicatula LMs
Delicata delicatula LM4
Delicata delicatula LM5
Delicata delicatula LM6
Delicata delicatula LM1 Delicata delicatula LM3 Delicata delicatula LMs Delicata delicatula LM4 Delicata delicatula LM5 Delicata delicatula LM6
Length Range
17-51 µm
Width Range
4.6-7.5 µm
Striae in 10 µm
18-28 dorsal, 19-28 ventral
Delicata Alpestris LM1 Delicata Alpestris LM2 Delicata Alpestris LM3 Delicata Alpestris LM4 Delicata Alpestris LM5 Delicata Alpestris LM6 Delicata Alpestris LM7
Length Range
23-36 µm
Width Range
4.1-5.4 µm
Striae in 10 µm
18-22 dorsal, 20-25 ventral
Delicata canadensis LM1 Delicata canadensis LM2 Delicata canadensis LM4 Delicata canadensis LM3 Delicata canadensis LM5 Delicata canadensis LM6

Delicatophycus montana

M.J.Wynne 2019

Length Range
23-46 µm
Width Range
5.1-7.6 µm
Striae in 10 µm
16-18 center (dorsal) up to 24 at the apices; 18-25 ventral side
Delicata Montana 1 290102 Delicata Montana 2 290102 Delicata Montana 3 290102 Delicata Montana 4 290102 Delicata Montana 5 290102 Delicata Montana 6 290102 Delicata Montana 7 290102

Also compare to

Delicatophycus verena

M.J.Wynne