At any stage, you can move up or down the Taxonomic hierachy of Antarctic/subantarctic species by clicking on any name. Lower level taxon counts are shown in [].
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| Kingdom | Chromista | |
| Phylum | Bacillariophyta | |
| Class | Bacillariophyceae | |
| Order | Acnanthales |
List of all species - see Taxon profile using the number
| Family Achnanthaceae | ||||
| Achnanthes abundans | Manguin | |||
| Achnanthes brevipes | Agardh, 1824 | |||
| Achnanthes brevipes | Agardh 1824 | |||
| Achnanthes brevipes var. arctica | (P.T Cleve) Ko-Bayashi 1965 | |||
| Achnanthes brevipes var. intermedia | ||||
| Achnanthes cf. abundans | Manguin | |||
| Achnanthes chlidanos | Hohn et Hellerman 1963 | Synonym | ||
| Achnanthes coarctata | (BrÚbisson) Grunow in Cleve et Grunow 1880 | |||
| Achnanthes coarctata var. elliptica | (BrÚbisson in Wm. Smith) Grunow in Cleve et Grunow | Synonym | ||
| Achnanthes coartcata var. rhomboides | ||||
| Achnanthes delicatula | (Kitzing) Grunow in Cleve et Grunow 1880/? | |||
| Achnanthes delicatula ssp. Hauckiana | (Grunow in Cleve et Grunow ) Lange- | |||
| Achnanthes exilis var. minutissima | Brun 1880 | Synonym | ||
| Achnanthes gainii | (M. Peragallo) Mann 1937 | |||
| Achnanthes germainii | Mang. | |||
| Achnanthes hauckiana | Grunow in Cleve et Grunow 1880 | Synonym | ||
| Achnanthes intermedia | Kitzing 1833 | Synonym | ||
| Achnanthes kryophila | Pet. | |||
| Achnanthes lanceolata | (BrÚbisson) Grunow in Cleve et Grunow 1880 | |||
| Achnanthes lapidosa | Krasske 1929/? | Synonym | ||
| Achnanthes marginatula | Grunow in Cleve et Grunow 1880 | Synonym | ||
| Achnanthes metakryophila | Lange-Bertalot et R. Schmidt 1990 | |||
| Achnanthes minutissima | Kitzing 1833 | |||
| Achnanthes minutissima var. cryptocephala | Grunow in Van Heurck 1880-1885 | Synonym | ||
| Achnanthes montana | Krasske | |||
| Achnanthes ninckei | Guermeer & Manguin | |||
| Achnanthes nodosa | A. Cleve 1900 | |||
| Achnanthes parvula | Kitzing 1844 | |||
| Achnanthes peterseni | Hustedt 1937/? | |||
| Achnanthes sp. | ||||
| Achnanthes sp. 1 | ||||
| Achnanthes sp. A | ||||
| Achnanthes subatomoides | (Hust.) L-Bert. & Archibald | |||
| Achnanthes subsessilis | Kitzing 1833 | Synonym | ||
| Achnanthes taylorensis | Kellogg et Kellogg in Kellogg et al. 1980 | |||
| Achnanthes vicentii | Manguin, 1957 | |||
| Family Achnanthidiaceae | ||||
| Achnanthidium lanceolatum | BrÚbisson ex Kitzing 1849 | Synonym | ||
| Achnanthidium lanceolatum f. tipica | Mayer 1916 | Synonym | ||
| Achnanthidium microcephalum | Kitzing 1844 | Synonym | ||
| Psammothidium abundans | (Manguin) Bukhtiyarova et Round 1996 | |||
| Psammothidium chlidanos | (Hohn et Hellerman) Lange-Bertalot in Lange-Bertal | |||
| Psammothidium marginatulum | (Grunow) Bukhtiyarova et Round 1996 | |||