Delicatophycus canadensis is distinguished from other North American species of Delicatophycus by its narrow lunate valves and concave ventral margin with a tumid middle. Encyonema lunatum is superficially similar, but has ventrally deflected distal raphe fissures.

LM scalebar = 10 µm
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
Delicata canadensis LM1 Delicata canadensis LM2 Delicata canadensis LM4 Delicata canadensis LM3 Delicata canadensis LM5 Delicata canadensis LM6

Delicatophycus delicatulus

(Kütz.) M.J.Wynne 2019

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
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

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

Encyonema lunatum

(W.Sm.) Van Heurck 1880

Length Range
27.3-40.7 µm
Width Range
4.3-5.3 µm
Striae in 10 µm
9-14
Encyonema lunatum LM1 Encyonema lunatum LM2 Encyonema lunatum LM3 Encyonema lunatum LM4 Encyonema lunatum LM5 Encyonema lunatum LM6

Also compare to