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Guide to Karayevia suchlandtii

(Hust.) Bukht.

Karayevia Suchlandtii Guide
Credit: Marina Potapova
  1. Valves elliptical to linear-elliptical
  2. Central areas absent
  3. Striae almost parallel in the middle, radiate towards apices
  4. Striae on rapheless valve interrupted by a hyaline line

Valves are elliptical to linear-elliptic. The raphe valve has a lanceolate axial area and no distinct central area. The rapheless valve has a linear axial area and no central area. Striae in the middle are almost parallel, becoming radiate toward apices, 18-20 in 10 µm. Striae on rapheless valve are interrupted by a longitudinal line at each side of the valve.

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