Desmids

1 October 2025

• Cosmarium groenlandicum
• Cosmarium pseudosaxicola

24 September 2025

• Cosmarium contractum var. subglobosum
• Cosmarium perdifficile

23 September 2025

• Cosmarium contractum sensu W & G.S. West 1905
• Cosmarium pseudotumidum
• Staurodesmus bulnheimii

18 September 2025

• Staurastrum elongatum
• Staurastrum longipes var. contractum
• Staurastrum muticum morpha

12 September 2025

• Cosmarium carniolicum
• Cosmarium extensum
• Cosmarium pyramidatiforme

9 September 2025

• Actinotaenium obcuneatum
• Cosmarium anisochondroides
• Cosmarium sparsipunctatum
• Haplotaenium latius

20 August 2025

• Cosmarium botrytis var. tumidium
• Cosmarium dubovianum

13 August 2025

• Cosmarium cantalanse
• Cosmarium isthmium
• Cosmarium swieri
• Cosmarium volcanicum

11 August 2025

• Cosmarium lamouraense
• Cosmarium pseudannulatum
• Cosmarium subbioculatum

10 August 2025

• Cosmarium fictogermanicum
• Cosmarium paragranatoides

8 August 2025

• Cosmarium ridibundum
• Cosmarium schulzii

2 August 2025

• Closterium nematodes var. proboscideum
• Closterium regulare
• Euastrum gemmatum

1 August 2025

• Closterium limneticum var. tenue
• Closterium subscoticum morpha
• Cosmarium fictophaseolus
• Cosmarium tetraophthalmoides
• Staurastrum subnivale

28 July 2025

• Cosmarium alteroreniforme
• Cosmarium bioculatiforme
• Cosmarium kossinskajae
• Cosmarium paludis-veteris
• Cosmarium pseudoklebsii
• Cosmarium subabbreviatum

27 July 2025

• Closterium juncidum var. brevius

18 July 2025

• Staurastrum gladiosum

12 July 2025

• Gonatozygon brebissonii var. minutum

28 June 2025

• Euastrum lacustre
• Staurastrum pelagicum
• Staurastrum planctonicum

24 June 2025

• Staurastrum boreale morpha
• Staurastrum crenulatum
• Staurastrum manfeldtii var. annulatum
• Staurastrum manfeldtii var. parvum

15 June 2025

• Closterium abruptum var. brevius
• Cosmarium arcuatiporosum
• Mesotaenium kramstae

9 June 2025

• Roya obtusa var. montana

26 April 2025

• Cosmarium corbula

18 April 2025

• Actinotaenium cruciferum
• Closterium cornu

9 April 2025

• Euastrum montanum
• Staurastrum margaritaceum morpha
• Staurodesmus glaber var. limnophilus

2 April 2025

• Closterium baillyanum var. parvulum

22 March 2025

• Cosmarium dentiferum var. alpinum
• Cosmarium margaritatum var. ridibundum
• Cosmarium reniforme var. compressum

11 March 2025

• Cosmarium sphalerostichum

2 March 2025

• Cosmarium magnum

25 February 2025

• Cosmarium granatum var. messikommeri
• Cosmarium granatum var. nordstedtii

22 February 2025

• Cosmarium integrum

20 February 2025

• Cosmarium scenedesmus

12 February 2025

• Cosmarium crenulatum
• Cosmarium minutum
• Cosmarium subnudum
• Cosmarium contractoideum
• Cosmarium ellipsoideum
• Cosmarium pseudogoniodes
• Cosmarium subcostatulum
• Cosmarium triomphalum

2 February 2025

• Pleurotaenium pseudofluctuatum