Description: L 36.2–38.1um, Br 33.0–33.7um, Isth 8.5–10.7um, Th 20.0–21.4um, L:Br 1.09–1.13. Cells of medium size, sinus deep, linear; semicells semicircular, the sides rounded with four or five undulations and the apex with two faintly discernable undulations, a single row of intramarginal crenae following the same pattern as the marginal ones, the rest of the cell wall finely punctate. marginal undulations becoming larger towards the apex. Side view semicells sub circular showing apical crenae and apical intramarginal crenae with the rest of the cell wall finely punctate. End view broadly elliptic with four marginal crenae on the ends and two or three in the mid region. Chloroplast furcoid. (Dingley 2001)

State distribution in Australia, based on available literature

new species (Dingley 2001)

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