Gomphonema tergestinum (Grunow in Van Heurck) Fricke; 1902; pl. 234
Key references
Reichardt E. 2009. Silikatauswüchse an den inneren Stigmenöffnungen bei Gomphonema-Arten. Diatom Research. 24(1): 159-173.
Novais M.H., Blanco S., Hlúbiková D., Falasco E., Gomà J., Delgado C., Ivanov P., Ács E., Morais M., Hoffmann L., Ector L. 2009. Morphological examination and biogeography of the Gomphonema rosenstockianum and G. tergestinum species complex (Bacillariophyceae). Fottea. 9(2): 257-274.
Morphology
Size
Length 10-32.5 µm, width 4.7-7 µm (Reichardt 2009).
Shape
Valves narrow elliptic with broadly rounded, slightly protracted head pole and narrowly rounded to acute foot pole.
Symmetry
Heteropolar, valve outline bilaterally symmetrical.
Striae
Striae uniseriate, slightly to moderately radiate throughout the valve, areolae round, discernible in LM.
Axial area
Narrow, linear.
Central area
Asymmetrical, broad, rectangular or acute-angled, extending to the valve margin on one side, narrower and bordered by a short stria on the opposite side. A single stigma located near the valve centre.
Raphe
Straight, proximal raphe ends expanded, internal proximal raphe fissures terminate in oblique hooks.
SEM morphology
Round internal stigma opening occluded by a flap and surrounded by a collar-like ring of small nodules.
Length 10-32.5 µm, width 4.7-7 µm (Reichardt 2009).
Shape
Valves narrow elliptic with broadly rounded, slightly protracted head pole and narrowly rounded to acute foot pole.
Symmetry
Heteropolar, valve outline bilaterally symmetrical.
Striae
Striae uniseriate, slightly to moderately radiate throughout the valve, areolae round, discernible in LM.
Axial area
Narrow, linear.
Central area
Asymmetrical, broad, rectangular or acute-angled, extending to the valve margin on one side, narrower and bordered by a short stria on the opposite side. A single stigma located near the valve centre.
Raphe
Straight, proximal raphe ends expanded, internal proximal raphe fissures terminate in oblique hooks.
SEM morphology
Round internal stigma opening occluded by a flap and surrounded by a collar-like ring of small nodules.
Literature
References are given in chronological order.
Reference |
Citation |
|---|---|
| Van Heurck H. 1880. Synopsis des Diatomées de Belgique. Atlas. Ducaju & Cie., Anvers.; 1-30 pls | Type Illustration |
| Schmidt A. 1902. Atlas der Diatomaceen-Kunde. Leipzig. O.R. Reisland, Series V (Heft 59-60): pl. 234 [F. Fricke]. | Illustrations |
| Reichardt E. 1986. Einige bemerkenswerte Diatomeenfunde aus Bayern. II. Wenig beobachtete Taxa aus der Isar in der Umgebung von München. Berichte der Bayerischen Botanischen Gesellschaft. 57: 147-152. | Illustrations; Ecology; Morphology |
| Reichardt E. 2009. Silikatauswüchse an den inneren Stigmenöffnungen bei Gomphonema-Arten. Diatom Research. 24(1): 159-173. | Morphology; Ecology; Type Illustration; |
| Fránková M., Poulíčková A., Neustupa J., Pichrtová M., Marvan P. 2009. Geometric morphometrics - a sensitive method to distinguish diatom morphospecies: a case study on the sympatric populations of Reimeria sinuata and Gomphonema tergestinum (Bacillariophyceae) from the River Bečva, Czech Republic. Nova Hedwigia. 88(1-2): 81-95. | Morphology; Illustrations |
| Novais M.H., Blanco S., Hlúbiková D., Falasco E., Gomà J., Delgado C., Ivanov P., Ács E., Morais M., Hoffmann L., Ector L. 2009. Morphological examination and biogeography of the Gomphonema rosenstockianum and G. tergestinum species complex (Bacillariophyceae). Fottea. 9(2): 257-274. | Morphology; Ecology; Illustrations; |
| Levkov Z., Mitic-Kopanja D., Reichardt E. 2016. The diatom genus Gomphonema from the Republic of Macedonia. Lange-Bertalot H. (ed.) Diatoms of Europe, Vol. 8, Koeltz Botanical Books, Oberreifenberg. 552 pp | Morphology; Illustrations |
| Jüttner I., Kociolek J.P., Gurung S., Gurung A., Sharma C.M., Levkov Z., Williams D.M., Ector L. 2018. The genus Gomphonema (Bacillariophyta) in Rara Lake, Nepal: taxonomy, morphology, habitat distribution and description of five new species, and a new record for Gomphoneis qii. Diatom Research. 33(3): 283-320. | Morphology; Illustrations |
Similar Species
This page should be cited as:
Jüttner I., Reichardt E., Levkov Z., Ector L. Gomphonema tergestinum (Grunow in Van Heurck) Fricke; 1902; pl. 234. In: Jüttner I., Carter C., Cox E.J., Ector L., Jones V., Kelly M.G., Kennedy B., Mann D.G., Turner J. A., Van de Vijver B., Wetzel C.E., Williams D.M..
Freshwater Diatom Flora of Britain and Ireland. Amgueddfa Cymru - National Museum Wales. Available online at https://naturalhistory.museumwales.ac.uk/diatoms/browsespecies.php?-recid=3886. [Accessed:
].
Image Gallery
Record last modified: 24/06/2022