Welcome to the Diatom Image Database! The Periphyton Group at Florida International University created and maintains the Diatom Image Database, which includes over 980 diatom taxa found in the greater Everglades region of south Florida. Please send questions or comments about the Diatom Image Database to Franco Tobias .
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Navicula radiosa 02
Patrick, R. & Reimer, C. W (1966). The Diatoms of the United States I. Monographs of the Academy of Natural Sciences of Philadelphia. Pennsylvania. pp. 509; 560-561 [pl.48:15]
Navicula radiosa Kütz. 1844; Pinnularia radiosa (Kütz.) Rabh. 1853; Navicula radiosa var. acuta (W. Sm.) Grun. 1860
Valve is linear-lanceolate with acute, rounded ends; axial area is narrow, distinct and appearing to be more heavily silicified than the rest of the valve (along with the central nodule); central area is often variable in size and transversely widened, but does not reach the valve margins; striae are radiate throughout most of the valve, becoming convergent at the ends; length is 40-120µm, breadth is 10-19µm; striae count is 10-12 in 10µm