Amphipleura F.T. Kützing; 1844; 103
Key references
Cox E.J. 1975. A reappraisal of the diatom genus Amphipleura Kütz. using light and electron microscopy. British Phycological Journal. 10(1): 1-12.
Morphology
Cells with lanceolate, linear-lanceolate or linear valves, valve margins tapering to rounded or acute ends.
Isopolar, isovalvar, bilaterally symmetrical.
Striae uniseriate, parallel, with small, very regularly spaced areolae; areolae opening externally via a narrow, apically elongated slit, internally circular and occluded by a fine pore plate (hymen).
Raphe slits short or very short, positioned towards the valve ends, separated by a long, narrow axial area; external raphe endings all simple or slightly expanded. Internally raphe sternum (i.e. the part of the axial area containing a raphe slit) bears a thick longitudinal rib on each side of the raphe, which combines with the helictoglossa to form a characteristic beaked structure (the ‘porte-crayon’ structure described by Cleve) at each pole; the rest of the axial area bears a single narrow rib; central area absent.
One central H-shaped plastid (as seen in valve view), consisting a central bridge appressed to one valve and containing a pyrenoid, from which two large lateral plates extend beneath the girdle to the opposite valve.
Cells solitary and unattached, or occurring loosely associated in mucilaginous masses.
Isopolar, isovalvar, bilaterally symmetrical.
Striae uniseriate, parallel, with small, very regularly spaced areolae; areolae opening externally via a narrow, apically elongated slit, internally circular and occluded by a fine pore plate (hymen).
Raphe slits short or very short, positioned towards the valve ends, separated by a long, narrow axial area; external raphe endings all simple or slightly expanded. Internally raphe sternum (i.e. the part of the axial area containing a raphe slit) bears a thick longitudinal rib on each side of the raphe, which combines with the helictoglossa to form a characteristic beaked structure (the ‘porte-crayon’ structure described by Cleve) at each pole; the rest of the axial area bears a single narrow rib; central area absent.
One central H-shaped plastid (as seen in valve view), consisting a central bridge appressed to one valve and containing a pyrenoid, from which two large lateral plates extend beneath the girdle to the opposite valve.
Cells solitary and unattached, or occurring loosely associated in mucilaginous masses.
Literature
References are given in chronological order.
Reference |
Citation |
|---|---|
| Kützing F.T. 1844. Die Kieselschaligen Bacillarien oder Diatomeen. Fr. Fritsch, Nordhausen. 152 pp; 30 pls | Morphology; Description |
| Cox E.J. 1975. A reappraisal of the diatom genus Amphipleura Kütz. using light and electron microscopy. British Phycological Journal. 10(1): 1-12. | Morphology; Illustrations; |
| Round F.E., Crawford R.M., Mann D.G. 1990. The Diatoms. Biology & Morphology of the Genera. Cambridge University Press, Cambridge. 747 pp | Morphology; Illustrations |
| Glushchenko A.M., Kulikovskiy M.S. 2017. Amphipleura vavilovii: a new diatom species of the family Amphipleuraceae from Laos. Inland Water Biology. 10(1): 17-21. | Morphology; Illustrations; Taxonomy |
This page should be cited as:
Mann D. G., Jüttner I., Kelly M., Jones V., Williams D. M. Amphipleura F.T. Kützing; 1844; 103. 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=4187. [Accessed:
].
Image Gallery
Record last modified: 27/12/2020