An arrangement of Terpsinoe intermedia from salt marshes near Mobile, Alabama, USA. Under the name it says ‘abnormal forms’, however on the rear, a note was added which says ‘F.C. Wise, 3/57, Auxospore formation not abnormal forms.’. Also says ‘see notes in file’ which I do not have. Dated 26.4.1903. Prepared by Henry Morland. Olympus BHB microscope using 450nm LED light. I then imaged 2 of them with a 40x Leitz Pl Apo 1.00 objective, oil immersion. Olympus Aplanat Achromat condenser, oil immersion, oblique lighting. 2.5x Nikon CF PL photoeyepiece. 11mm of the tube to the camera was removed to improve field of view. Monochrome converted Nikon d850 camera. 50 images stacked in Zerene (Pmax).
Terpsinoë intermedia Grunow 1884: 7(59). Published in: Grunow, A. (1884). Die Diatomeen von Franz Josefs-Land. Denkschriften der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe, Wien 48(Abt. 2): 53-112, 5 pls. This name is currently regarded as a synonym of Terpsinoë musica var. intermedia (Grunow) Hustedt. Source of synonymy: Hustedt, F. (1930). Die Kieselalgen Deutschlands, Österreichs und der Schweiz unter Berücksichtigung der übrigen Länder Europas sowie der angrenzenden Meeresgebiete. Bd. VII: Teil 1: Liefrung 4. In: Rabenhorst’s Kryptogamen Flora von Deutschland, Österreich und der Schweiz. (Anon. Eds), pp. 609-784. Akademische Verlagsgesellschaft m.b.h. Leipzig.