Jensenia spinosa

Jensenia spinosa
Scientific classification
Kingdom: Plantae
Division: Marchantiophyta
Class: Jungermanniopsida
Order: Metzgeriales
Family: Pallaviciniaceae
Genus: Jensenia
Lindb. 1868
Species: J. spinosa
Binomial name
Jensenia spinosa
(Lindenb. & Gott.) Grolle
Synonyms
  • Symphyogyna spinosa
  • Symphyogyna serrata
  • Pallavicinia spinosa
  • Pallavicinia stephanii
  • Makednothallus stephanii
  • Jensenia stephanii

Jensenia spinosa is a dioicous bryophyte plant in the liverwort family Pallaviciniaceae. It is the only African member of the Jensenia genus, and generally occurs at high elevations.[1] It is widespread but scarce, and has been found in South Africa, Malawi, Tanzania, Rwanda (Volcanoes National Park at 3,650m), the DRC, as well as the islands of Mauritius, Réunion and St Helena.[2]

Jensenia spinosa is very similar to its neotropical relative J. erythropus,[2] though geographically isolated. Both may be confused with Symphyogyna species, but the latter's scale-shaped, rather than cup-shaped involucres have been useful in distinguishing the two genera.[1][3]

References

  1. ^ a b "The hepatic, Jensenia spinosa (= Pallavicinia stephanii: Pallaviciniaceae), in southern Africa". Bothalia 23,2: 223–229. 1993. 
  2. ^ a b Grolle, 1979
  3. ^ Van der Gronde, 1980