Spaulding, S.,
Edlund, M.
(2008).
Playaensis.
In Diatoms of North America.
Retrieved November 21, 2024, from https://diatoms.org/genera/playaensis
Symmetric Biraphid
Playaensis
Raphe bordered by prominent longitudinal rib
Valves panduriform with marginal spines
Valves less than 40 µm in length
Frustules of Playaensis are small in size, less than 40 µm in length. Valves are panduriform in shape and the valve margins are ornamented with small, fin-like spines. Striae are uniseriate and punctate. The raphe is bordered on both sides by a longitudinal rib. Internally, this rib is visible as a broad structure. Externally, the...