Desmids –
Archaeplastida (Part)
Observations on Staurastrum johnsonii
Gallery Prof. Rupert Lenzenweger
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Staurastrum johnsonii West & G.S.West 1896
Most likely ID: n.a.
Basionym: n.a.
Add’l Synonyms: n.a.
Note: Coesel synonymizes St. johnsonii and St. bicorne.
Description: The cells are bi-radially and have long horizontally standing out arms with 2 pricks at the each end. The center section is stretched, in the center swollen with shallow, continuous opened centralcuts and two rows of small warts on both sides. The vertex view is fusiform.
Dimension: Length 50–55 µm, width 80–85 µm.
Occurrence: Widely spread in northern areas (Alaska, Michigan, Labrador, Ontario, arctic waters).
Left: Original graphic by Prof. Lenzenweger.
Right: Photomicrograph by Prof. Lenzenweger. For microphotography, the microscope illumination was adjusted in such a way that as many features as possible that are important for species identification are prominently displayed.
Copyright by Prof. Rupert Lenzenweger, Ried im Innkreis, Austria.
© Wolfgang Bettighofer,
images under Creative Commons License V 3.0 (CC BY-NC-SA).
For permission to use of (high resolution) images please contact postmaster@protisten.de.
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striolatum
teliferum
pseudopyramidatum
pyramidatum
scabrum
capitulum
forficulatum
oligacanthum
var. incisum
chlamydosporum
arcuatum
var. subavicula
truncata
var. quadrata
rubescens
venustum
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ralfsii
var. montanum
ralfsii
digitus
acerosum
intermedium
dissiliens
kuetzingii
ralfsii
var. hybridum
aureus
botrytis
quadratum
quadrum
crassa
digitus
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kinahanii
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rotata
swartzii
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