Diatoms of North AmericaDiatoms of North America
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Guide to Humidophila perpusilla

(Grunow) R.L.Lowe, Kociolek, J.R.Johans., Van de Vijver, Lange-Bert. and Kopalová 2014

Humidophila Perpusilla Guide
  1. Valves elliptic-lanceolate to linear-lanceolate
  2. Axial area large, lanceolate
  3. Central area elliptic

Valves are elliptic-lanceolate to linear-lanceolate with a large, lanceolate axial area and an elliptic central area.