original description(ofPinnularia perpusilla Østrup, 1910)Østrup, E. (1910). Danske Diatoméer. <em>C.A. Reitzels Boghandel, Kjøbenhavn.</em> 323 pp., 5 pls. page(s): p. 96; pl. 3, fig. 62 [details]
new combination referenceLange-Bertalot, H. (1999). Neue Kombinationen von Taxa aus Achnanthes Bory (sensu lato). In: Lange-Bertalot, H. (ed.), Iconographia Diatomologica. Annotated Diatom Micrographs. Vol. 6. Phytogeography-Diversity-Taxonomy. Koeltz Scientific Books, Königstein, Germany,, 6: pp. 276-289 page(s): p. 286 [details] Available for editors [request]