About this item...
Nitzschia ganderscheimensis Krasske
Specimen
"Rocher suintant à Glaux maritima / Plaurax" Denticula thermalis, Nitzschia commutata, N. vitrea + fo. major, N.[?nifencia?] + fo. minor Achnanthes grimmei, Navicula [?ouspidata?] var. ambigua, Amphora sp.