Chauvin, François Joseph (1797-1859) & Michel Robert Roberge (?-1864)
ALGUES DE LA NORMANDIE ....
Fascicles I-VIII, numbers 1-200. Caen (Chalopin), 1826-1838.
Specimens are dried on paper. Information was derived from herbarium sheet labels.

Achnanthes longipes [C.] Agardh
Conferva armillaris [O.F.] Müller
Conferva stipitata [J.E. Smith]
France (Manche) Cherbourg
Chauvin & Roberge 26

Conferva flocculosa [Roth]
Diatoma tenue [C.] Agardh
France (Calvados) Caen
Chauvin & Roberge 51

Gloionema apiculata [Greville
Schizonema apiculatum [C.] Agardh
France (Calvados) Saint-Aubin[-sur-Mer], Langrune
Chauvin & Roberge 52

Conferva striatula
Diatoma arcuatum [Lyngbye]
Diatoma striatulum [C.] Agardh
[France (Calvados)]
Chauvin & Roberge 76

Schizonema helminthosum [Chauvin]
France (Calvados) Luc [as "Luc, près Caen"]
Chauvin & Roberge 77

Exilaria cristallina
Fragilaria capucina
Frustulia oblonga [Kützing]
Melosira orichalcea
[France (Calvados)] Caen, Falaise, Vire
Chauvin & Roberge 126

Echinella circularis Greville
Echinella rosacea Gaillon
Exilaria circularis Greville
Frustulia circularis Duby
Meridion circulare [C.] Agardh
Meridion vernale Leiblein
[France (Calvados)]
Chauvin & Roberge 127

Achnanthes unipunctata Greville
Candollela unipunctata Gaillon
Diatoma unipunctatum [C.] Agardh
Fragilaria unipunctata Lyngbye
Striatella unipunctata [C.] Agardh
[France (Manche)] Cherbourg
Chauvin & Roberge 128

Diatoma elongatum [C.] Agardh
Diatoma tenue v. e. elongatum Lyngbye
[France (Calvados)] Caen, Vire, Falaise
Chauvin & Roberge 151

Diatoma lyngbyei [C.] Agardh
Diatoma tenue v. B. marium Lyngbye
[France (Calvados)] Côtes du Calvados
Chauvin & Roberge 152