''Haplomitrium hookeri'', or Hooker's flapwort,
is a
species
A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...
of
liverwort
Liverworts are a group of non-vascular land plants forming the division Marchantiophyta (). They may also be referred to as hepatics. Like mosses and hornworts, they have a gametophyte-dominant life cycle, in which cells of the plant carry ...
. It occurs in Europe, Asia, North America and New Zealand.
References
Plants described in 1813
Flora of Great Britain
Calobryales
{{bryophyte-stub