Platessa hustedtii

(Krasske) Lange-Bertalot in Krammer and Lange-Bertalot 2004      Category: Monoraphid
BASIONYM: Cocconeis hustedtii Krasske 1923
SYNONYM(S): Achnanthes hustedtii (Krasske) Reimer in Patrick and Reimer 
REPORTED AS: Achnanthes rupestoides (Hohn) 

Platessa conspicua

 

Platessa kingstonii

LM scalebar = 10 µm = 80 pixels.



Observations

Contributor: Marina Potapova - October 2011
Length Range: 11-15 µm
Width Range: 5.0-6.4 µm
Striae in 10 µm: 15-18

Description

Valves are elliptical. The raphe valve has a narrow axial area and a transversely elliptical or rectangular central area. The rapheless valve has a wide lanceolate axial area and no distinct central area. The raphe is straight, with slightly expanded terminal and central ends, and lacks terminal fissures. Striae are radiate and biseriate. The external and internal openings of the areolae are circular or somewhat angular and isodiametric.



Original Description

Basionym: Cocconeis hustedtii
Author: Krasske 1923
Length Range: 12-17 µm
Width Range: 5-7 µm
Striae in 10 µm: 19-22 on raphe valve, 18-20 on rapheless valve

Original Description

Cocconeis Hustedtii nov. spec. -(Fig. 10a, b). - Elliptisch, Oberschale mit kurzen, leicht strahlenden Streifen, 18 - 20 in 10µ, die eine breit lanzettliche Pseudoraphe von etwa einem Drittel der Schalenbreite freilassen. Unterschale: enge Axial-Area und breite quadratische Zentralarea, Streifen etwas enger, 19 - 22 in 10µ. Länge 12 - 17 µ, Breite 5 - 7 µ.- Fundort : Wand eines Schulaquariums,hier trotz öfterer Reinigung stets in Massen. Doch auch in Aquarien des Herrn LOUIS SCHLUZE Cassel beobachtet.

Original Images


Cite This Page:
Potapova, M. (2011). Platessa hustedtii. In Diatoms of the United States. Retrieved April 23, 2014, from http://westerndiatoms.colorado.edu/taxa/species/platessa_hustedtii

Species: Platessa hustedtii

Contributor: Marina Potapova

Reviewer: Sarah Spaulding

Citations

Krammer, K. and Lange-Bertalot, H. (2004). Bacillariophyceae 4. Teil: Achnanthaceae, Kritische Erganzungen zu Navicula (Lineolatae), Gomphonema Gesamtliteraturverzeichnis Teil 1-4 [second revised edition]. In: H. Ettl et al., Suesswasserflora von Mitteleuropa. Spektrum Akademischer Verlad Heidelberg, 468 pp.

Krasske, G. (1923). Die Diatomeen des Casseler Beckens und seiner Randgebirge, nebst einigen wichtigen funden aus Niederhessen. Botanisches Archiv. Konigsberg 3(4):185-209.

Links & ID's

Index Nominum Algarum (INA)

California Academy of Sciences (CAS)

Platessa hustedtii CAS

North American Diatom Ecological Database (NADED)

NADED ID: 2508004

Autecology Discussion