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Reimeria uniseriata

Sala, Guerrero and Ferrario 1993      Category: Asymmetrical biraphid

Reimeria sinuata


Rexlowea navicularis

LM scalebar = 10 µm = 40 pixels.


Contributor: Marina Potapova - November 2010
Length Range: 13-24 µm
Width Range: 4.0-7.0 µm
Striae in 10 µm: 8-10


Valves are linear-lanceolate with subcapitate ends, dorsiventral with convex dorsal side and more or less straight ventral side, 4.0-7.0 µm wide, 12.5-24 µm long. Ventral side of the valve has a pronounced medial expansion. Striae are uniseriate, 8-10 in 10 µm in the middle of the dorsal side. Areolae are 17-20 in 10 µm and covered externally by silica flaps. The central area occupies the expansion in the middle of the ventral side. There is one isolated stigma near the central nodule. The raphe is straight, with the terminal raphe fissures curved to the ventral side. Apical pore fields are present on the ventral mantle and split by the terminal raphe fissures.

Original Description

Author: Sala, Guerrero and Ferrario 1993
Length Range: 15-40 µm
Width Range: 4-9 µm
Striae in 10 µm: 7-14

Original Description

Valves asymmetric to the longitudinal axis. Axial area straight; central area unilateral, extending to the ventral margin. Raphe straight, expanded laterally; internal proximal ends bent dorsally, external proximal ends bent slightly ventrally; terminal raphe fissure ventrally curved. One stigma positioned near the proximal raphe ends, external opening central or slightly dorsal and internal opening dorsal. Uniseriate striae, areolae with C-shaped foramina. One apical pore field in each pole, located on the ventral mantle and extending to the valve face. Valve length: 15-40 µm; breadth 4-9 µm; striae 7-14 in 10 µm; areolae 16-30 in 10 µm.

Original Images

Cite This Page:
Potapova, M. (2010). Reimeria uniseriata. In Diatoms of the United States. Retrieved May 22, 2018, from

Species: Reimeria uniseriata

Contributor: Marina Potapova

Reviewer: Mark Edlund


Sala, S.E., Guerrero, J.M. and Ferrario, M.E. (1993). Redefinition of Reimeria sinuata (Gregory) Kociolek & Stoermer and recognition of Reimeria uniseriata nov. spec. Diatom Research 8(2):439-446.

Links & ID's

Index Nominum Algarum (INA)

Original INA

California Academy of Sciences (CAS)

Reimeria uniseriata CAS

North American Diatom Ecological Database (NADED)

NADED ID: 55004

Autecology Discussion