Black Sea Phytoplankton checklist
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Внимание! Разработка сайта прекращена в 2014 году. Сайт не поддрживается и не обновляется. Информация на сайте может быть устаревшей.
Talk:Chaetoceros abnormis
From Black Sea Phytoplankton checklist
Original description (Proshkina-Lavrenko A.I., 1953):
Chaetoceros abnormis Pr.-Lavr. sp. nova. (Pic. 2).
Descriptio. Catenulae rectae, breves 2 - 14 cellulares, 5 - 13 µ latae. Valvae ab ellipticis ad rotundas, planae, valvis terminalibus exclusis quorum altera (in fine catenulae superiore) convexa, altera (in fine catenulae inferiore) concava est. Fenestra nullo. Setutae tenues rectae a margine valvae abeuntes, basi decussatae et omnes ad catenulae finem inferiorem decurrentes. Setulae terminales in catenulae fine superiore caeteris simillimae, in fine inferiore setulae unica recta, longissima, crassissima, versus axin catenulae intensa. Chromatophori 2, lamellati. Sporae valvis subaequalibus, convexis, valva primaria aculeis grandibus paucis obsita, valva secundaria aculeis numerosis parvis tecta.
H a b i t a t i o. In marl Nigro raro in sinibus Novorossijsk, Sebastopolis et saepissime in regione boreali-occidentali maris et in liminibus fluminum Dnestr et Dnepr. Ad aestatis finem et autum, no saepe, hieme. rarissime.
