Pallaviciniaceae

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]

Pallaviciniaceae
Scientific classification
Kingdom:
Plantae
Division:
Marchantiophyta
Class:
Jungermanniopsida
Order:
Pallaviciniales
Family:
Pallaviciniaceae

Migula, 1904
Genera
  • Greeneothallus
  • Jensenia
  • Pallavicinia
  • Podomitrium
  • Seppeltia
  • Symphyogyna
  • Symphyogynopsis
  • Xenothallus
  • † Pallavicinites

Evolutionary History

One of the oldest known bryophyte is Pallaviciniites of the Devonian, discovered in New York. It bears strong similarities to extant thallus liverwort genus Pallavicinia, hence the name.[2]

gollark: So I checked further, and it seems that most of them use non-SIMD instruction sets but also run threads in groups so it's effectively SIMD anyway.I'm probably missing something but I don't see why you would do that.
gollark: As far as I know recent designs have moved away from that, and probably just magically schedule threads really well.
gollark: I don't know many of the underlying implementation details.
gollark: They do have lots of memory bandwidth.
gollark: And are optimized for simple number-crunching workloads and not complex branchy things like CPUs.

References
  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. Michael, Dunn. "Pallavicinites devonicus (Huber) Schuster". Ohio University. Ohio.edu. Retrieved June 14, 2019.


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.