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OLS Field Name OLS Field Data
Main Title Observations on North American Populations of 'Stephanodiscus' (Bacillariophyceae) Species Attributed to Friedrich Hustedt.
Author Theriot, E. ; Stoermer, E. F. ;
CORP Author Michigan Univ., Ann Arbor. Great Lakes Research Div.;Environmental Research Lab.-Duluth, MN.
Year Published 1982
Report Number EPA-R-807405; EPA/J-82-395;
Stock Number PB84-112283
Additional Subjects Identifying ; Diatoms ; Morphology ; Distribution(Property) ; Taxonomy ; North America ; Great Lakes ; Reprints ; Stephanodiscus
Library Call Number Additional Info Location Last
NTIS  PB84-112283 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 11p
Abstract Stephanodiscus alpinus is moderate in diameter, concentrically undulate and heavily silicified. Spine placement on valves from North American populations is variable and may differ from European material. North American specimens also tend to be more coarsely fasciculate. Stephanodiscus tenuis is distinguished by a rosette of areolae in the valve center. Stephanodiscus dubius is heavily silicified and concentrically undulate. The presence of alveoli near the margin of S. dubius distinguishes it from other Stephanodiscus species. (Copyright (c) 1982, by the American Microscopical Society, Inc.)
Availability Notes Pub. in Transactions of the American Microscopical Society 101, n4 p368-374 1982.
NTIS Title Notes Journal article.
Title Annotations Reprint: Observations on North American Populations of 'Stephanodiscus' (Bacillariophyceae) Species Attributed to Friedrich Hustedt.
PUB Date Free Form c1982
Category Codes 6C; 57C
NTIS Prices Not available NTIS
Primary Description 600/03
Document Type NT
Cataloging Source NTIS/MT
Control Number 402048846
Origin NTIS
Type CAT