Staurastrum acutum var. varians

Staurastrum alternans

Staurastrum avicula

Staurastrum bloklandiae

Staurastrum bohlinianum

Staurastrum bohlinianum (top view)

Staurastrum boreale

Staurastrum borgeanum forma borgeanum

Staurastrum borgeanum forma borgeanum (top view)

Staurastrum borgeanum forma borgeanum (zygospore)

Staurastrum brachiatoides

Staurastrum brachiatoides (zygospore)

Staurastrum brachiatum

Staurastrum brachiatum (zygospore)

Staurastrum brebissonii var. ordinatum

Staurastrum brebissonii var. ordinatum (top view empty cell)

Staurastrum brebissonii

Staurastrum chaetoceras

Staurastrum controversum (zygospore)

Staurastrum controversum var. controversum

Staurastrum crassangulatum

Staurastrum cristatum var. cristatum

Staurastrum echinatum

Staurastrum echinatum (empty cell)

Staurastrum echinatum (top view)

Staurastrum echinatum (zygospore)

Staurastrum furcatum var. aciculiferum

Staurastrum furcatum var. furcatum

Staurastrum furcigerum var. furcigerum

Staurastrum gladiosum

Staurastrum gracile

Staurastrum hirsutum (zygospore)

Staurastrum hirsutum var. arnellii

Staurastrum hirsutum var. arnellii

Staurastrum hirsutum var. hirsutum

Staurastrum hirsutum var. muricatum

Staurastrum hollandicum

Staurastrum hystrix

Staurastrum hystrix (top view)

Staurastrum inconspicuum (top view)

Staurastrum inconspicuum

Staurastrum inflexum var. inflexum

Staurastrum kouwetsii

Staurastrum lapponicum

Staurastrum lapponicum (empty cell top view)

Staurastrum lapponicum (empty cell)

Staurastrum lunatum

Staurastrum margaritaceum

Staurastrum micron var. micron

Staurastrum micron var. micron (top view)

Staurastrum minimum

Staurastrum monticulosum

Staurastrum muticum forma minor

Staurastrum orbiculare var. depressum

Staurastrum orbiculare var. ralfsii

Staurastrum orbiculare var. ralfsii (zygospore)

Staurastrum oxyacanthum var. oxyacanthum

Staurastrum paradoxum var. diacanthum

Staurastrum paradoxum var. paradoxum (zygospore)

Staurastrum paradoxum var. paradoxum

Staurastrum pileolatum

Staurastrum pileolatum (empty cell)

Staurastrum pileolatum (top view focus just above isthmus)

Staurastrum pileolatum (top view focus on apex)

Staurastrum pileolatum (zygospore)

Staurastrum pingue

Staurastrum planctonicum

Staurastrum polymorphum

Staurastrum proboscideum

Staurastrum pseudopisciforme

Staurastrum punctulatum

Staurastrum pyramidatum

Staurastrum pyramidatum (top view)

Staurastrum quadriradiatum

Staurastrum quadriradiatum (top view)

Staurastrum sexcostatum

Staurastrum simonyi var. semicirculare

Staurastrum simonyi var. simonyi

Staurastrum smithii

Staurastrum spongiosum var. spongiosum

Staurastrum spongiosum var. spongiosum (empty cell)

Staurastrum spongiosum var. spongiosum (top view)

Staurastrum striatum

Staurastrum subavicula (top view)

Staurastrum subavicula

Staurastrum subcomptum

Staurastrum teliferum

Staurastrum tetracerum

Staurastrum trapezioides