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Isoetes (quillwort)

Lycopodiopsida - Isoetales - Isoetaceae

Taxonomy
Isoetes was named by Linnaeus (1753). It is extant.

It was assigned to Isoetaceae by Prantl (1874), Knowlton (1919), Hill (1987), Chandra and Tewari (1991) and I (2016).

Species
I. brevifolius, I. janaianus, I. reticulata
Species lacking formal opinion data
I. hystrix, I. savatieri, I. trullata

Synonymy list
YearName and author
1753Isoetes Linnaeus
1874Isoetes Prantl p. 125
1919Isoetes Knowlton
1987Isoetes Hill
1991Isoetes Chandra and Tewari
2016Isoetes I p. 722

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RankNameAuthor
kingdomPlantae
phylumLycopodiophytaScott 1900
classLycopodiopsidaBartling 1830
RankNameAuthor
orderIsoetales
familyIsoetaceae
genusIsoetes

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

G. Isoetes Linnaeus 1753 [quillwort]
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†Isoetes brevifolius Lesquereux 1883
†Isoetes janaianus Banerji 1988
†Isoetes reticulata Hill 1987
Diagnosis
No diagnoses are available
Measurements
No measurements are available
No ecological data are available

Age range: base of the Early/Lower Barremian to the top of the Late/Upper Pleistocene or 130.00000 to 0.01170 Ma

Collections (34 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Cretaceous145.0 - 100.5India (Gujarat) Isoetes janaianus (229188)
Early/Lower Barremian130.0 - 125.45United Kingdom (England) Isoetes sp. (45193)
Aptian125.0 - 113.0Portugal Isoetes choffati (73584)
Late/Upper Aptian - Early/Lower Albian122.46 - 109.0India (Gujarat) Isoetes janaianus (32378)
Oligocene33.9 - 23.03USA (Montana) Isoetes trullata (23793)
Late/Upper Oligocene - Early/Lower Miocene28.4 - 15.97Australia (Tasmania) Isoetes reticulata (167314)
Late/Upper Oligocene - Middle Miocene28.4 - 11.608Argentina (Tierra del Fuego) Isoetes savatieri (169381)
Early/Lower Miocene - Middle Miocene23.03 - 11.608Argentina (Tierra del Fuego) Isoetes savatieri (166708)
Miocene - Pliocene23.03 - 2.588Bolivia Isoetes sp. (34363)
Early/Lower Pleistocene2.588 - 0.781Australia (Victoria) Isoetes indet. (172830 172832 172833 172836 172837 172855 172867 172868 172870 172871 172873 172874 172876 172877 172878 172879 172880 172881 172882 172883 172884)
Early/Lower Pleistocene2.588 - 0.781USA (North Carolina) Isoetes sp. (61887)
Late/Upper Pleistocene0.129 - 0.0117United Kingdom (Worcestershire) Isoetes hystrix (163070)
Late/Upper Pleistocene0.129 - 0.0117Canada (Ontario) Isoetes lacustris (174229 174230)