An arrangement of four Stephanodiscus carconensis from Klamath Falls, Oregon. Mounted in Hyrax. No makers name, but this is by JA Long. Olympus BHB microscope using 450nm LED light. 40x Leitz Pl Apo NA 1.00 objective, oil immersion. Olympus Aplanat Achromat condenser, oil immersion, oblique lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 28 images stacked in Zerene (Pmax). Image was flipped horizontally (I like it better this way around).
Stephanodiscus carconensis published in: Grunow, A. (1878). Algen und Diatomaceen aus dem Kaspischen Meere. In: Naturwissenschaftliche Beiträge zur Kenntnis der Kaukasusländer, auf Grund seiner Sammelbeute. (Schneider, O. Eds), pp. 98-132. Dresden: Dresden Burdach. This name is currently regarded as a synonym of Praestephanos carconensis (Grunow) A.Tuji. Published in: Tuji, A., Mohri, Y., Ki, J.-S., Jung, S.W. & Julius, M.L. (2014). Phylogeny of Praestephanos gen. nov. (Thalassiosirales, Bacillariophyceae) based on Stephanodiscus suzukii, and related freshwater thalassiosiroid diatoms. Plankton Benthos Research 9(2): 132-140, 5 fig., 3 tables.