Diadesmis pantropica
Lange-Bertalot 2000 Category: Symmetrical biraphid
BASIONYM: Diadesmis pantropica Lange-Bertalot 2000
LM scalebar = 10 µm = 80 pixels.
Observations
Contributor: Rex Lowe - December 2011
Length Range: 16.1-21.3 µm
Width Range: 2.9-3.3 µm
Striae in 10 µm: 26-28
Description
The valves are linear, slightly swollen in the center and at the ends. The axial area is straight and linear; the central area is round. The raphe terminates in a subapical nodule.
Original Description
Basionym: Diadesmis pantropica
Author: Lange-Bertalot 2000
Length Range: 20-35 µm
Width Range: 3-4 µm
Striae in 10 µm: 25-27
Original Description
Species subgeneris Paradiadesmis. Valvae stricte lineares in media parts parum inflatae apicibus late subcapitatis et late rotundatis, 20-35, longae, 3-4 μm latae. Raphe filiformis recta poris et nodulis terminalibus plus minusve valde de apicibus ad partem proximalem versus transferunt, itaque cum areis terminalibus angustis longs prolongatis. Area axialis angusta linearis, area centralis plerumque paene circularis modice ampla. Striae transapicales circum aream centralem radiatae aliis parallelis vel subparallelis, 25-27 in 10 μm.
Original Images
Cite This Page:
Lowe, R. (2011). Diadesmis pantropica. In Diatoms of the United States. Retrieved May 22, 2013, from http://westerndiatoms.colorado.edu/taxa/species/diadesmis_pantropica
Species: Diadesmis pantropica
Contributor: Rex Lowe
Reviewer: Sarah Spaulding
Image Credit: Rex Lowe
- Valves linear
- Axial area narrow
- Central area round
- Raphe terminates in subapical nodule
Valves linear, slightly swollen in center and at the ends. The axial area narrow, with a round central area. The distal raphe terminates in a subapical nodule.
Compare
Diadesmis pantropica differs from other species of Diadesmis by its greater length and prominent subterminal nodules.
Diadesmis contenta
Citations
Rumrich, U., Lange-Bertalot, H. and Rumrich, M. (2000). Diatoms of the Andes. From Venezuela to Patagonia/Tierra del Fuego and two additional contributions. Lange-Bertalot, H. (ed.), Iconographia Diatomologica. Annotated Diatom Micrographs. Vol. 9. Phytogeography-Diversity-Taxonomy. Koeltz Scientific Books, Königstein, Germany, 9:673 pp.
Links & ID's
Index Nominum Algarum (INA)
California Academy of Sciences (CAS)
North American Diatom Ecological Database (NADED)
NADED ID: