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Guide to Achnanthes felinophila

R.L.Lowe and A.R.Sherwood 2009

Achnanthes Felinophila Guide
Credit: Rex Lowe
  1. Valves triundulate
  2. Ends cuneate
  3. Proximal raphe ends deflected slightly
  4. Rapheless valve with eccentric axial area

Valves are distinctly triundulate in large specimens, becoming less triundulate and more lanceolate in smaller valves. The valve ends are narrow and cuneate. The raphe valve has a narrow axial area and a rectangular central area, extending to the valve margin. The proximal raphe ends are slightly unilaterally deflected slightly. The rapheless valve has an eccentric axial area. Striae are punctate and radiate throughout the raphe valve. Striae on the rapheless valve are parallel in the center, becoming radiate and curved at the ends.