Pallaviciniaceae

Pallaviciniaceae
	Prionothallus xiphoides
Scientific classification
Kingdom:	Plantae
Division:	Marchantiophyta
Class:	Jungermanniopsida
Order:	Pallaviciniales
Family:	Pallaviciniaceae; Migula, 1904
Genera
	See text
Synonyms
	List Blytiaceae; Dilaenaceae; Diplomitriaceae; Pallavicinaceae; Symphyogynaceae;

Pallaviciniaceae is a widely distributed family of liverworts in the order Pallaviciniales. All species are thallose, typically organized as a thick central costa (midvein), each side with a broad wing of tissue one cell in thickness. All species are dioicous. The greatest diversity is in Australasia, with some species endemic to that region, though species belonging to the family may be found on every continent except Antarctica.^[1]

Species

As accepted by GBIF;^[2]

Greeneothallus Hässel
Jensenia Lindb.
Pallavicinia Gray
Pallavicinius
Podomitrium Mitt.
Prionothallus Mamontov, Vilnet & Schäf.-Verw.
Seppeltia Grolle
Symphyogyna Nees & Mont.
Symphyogynopsis Grolle
Xenothallus R.M.Schust.

Evolutionary history

One of the oldest known bryophytes is Pallaviciniites of the Devonian, discovered in New York. It bears strong similarities to extant thallus liverwort genus Pallavicinia, hence the name.^[3]

References

^ Schuster, Rudolf M. (1992). The Hepaticae and Anthocerotae of North America (volume V ed.). Chicago: Field Museum of Natural History. ISBN 0-914868-20-9.
^ "Pallaviciniaceae". www.gbif.org. Retrieved 15 December 2023.
^ Michael, Dunn. "Pallavicinites devonicus (Huber) Schuster". Ohio University. Retrieved June 14, 2019.

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[1] Schuster, Rudolf M. (1992). The Hepaticae and Anthocerotae of North America (volume V ed.). Chicago: Field Museum of Natural History. ISBN 0-914868-20-9.

[2] "Pallaviciniaceae". www.gbif.org. Retrieved 15 December 2023.

[3] Michael, Dunn. "Pallavicinites devonicus (Huber) Schuster". Ohio University. Retrieved June 14, 2019.

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