''Treubia'' is a
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...
of
liverworts in the
family
Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...
Treubiaceae.
[Crandall-Stotler, Barbara. & Stotler, Raymond E. (2000). "Morphology and classification of the Marchantiophyta". pages 21–70 ''in'' A. Jonathan Shaw & Bernard Goffinet (eds.), ''Bryophyte Biology''. (Cambridge: Cambridge University Press). ] There are seven species,
all of which are restricted to the southern hemisphere. Five of the species occur in
Australasia
Australasia is a region that comprises Australia, New Zealand and some neighbouring islands in the Pacific Ocean. The term is used in a number of different contexts, including geopolitically, physiogeographically, philologically, and ecologi ...
and the other (''
Treubia scapanioides'') occurs in
Chile
Chile, officially the Republic of Chile, is a country in the western part of South America. It is the southernmost country in the world, and the closest to Antarctica, occupying a long and narrow strip of land between the Andes to the east a ...
. All species are
dioicous
Dioicy () is a sexual system where archegonia and antheridia are produced on separate gametophytes. It is one of the two main sexual systems in bryophytes. Both dioicous () and monoicous gametophytes produce gametes in gametangia by mitosis ra ...
, with separate male and female
gametophyte
A gametophyte () is one of the two alternating multicellular phases in the life cycles of plants and algae. It is a haploid multicellular organism that develops from a haploid spore that has one set of chromosomes. The gametophyte is the ...
s.
Classification
Species list:
* ''
Treubia insignis''
K.I.Goebel
* ''
Treubia lacunosa''
(Colenso) Prosk.
* ''
Treubia lacunosoides''
T.Pfeiff., W.Frey et M.Stech
* ''
Treubia pygmaea''
R.M.Schust.
* ''
Treubia scapanioides''
R.M.Schust.
* ''
Treubia tahitensis''
(Nadeaud) Goebel ex Besch.
* ''
Treubia tasmanica''
R.M.Schust. et G.A.M.Scott
References
Treubiales
Liverwort genera
{{Bryophyte-stub