Thismiaceae is a

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants th ...

s whose status is currently uncertain. The

Angiosperm Phylogeny Group The Angiosperm Phylogeny Group (APG) is an informal international group of systematic botanists who collaborate to establish a consensus on the taxonomy of flowering plants (angiosperms) that reflects new knowledge about plant relationships disco ...

classifications (

APG II The APG II system (Angiosperm Phylogeny Group II system) of plant classification is the second, now obsolete, version of a modern, mostly molecular-based, system of plant taxonomy that was published in April 2003 by the Angiosperm Phylogeny Gr ...

APG III APG is an abbreviation with several different meanings: * Aberdeen Proving Ground, a United States Army installation in Aberdeen, Maryland, also ** Phillips Army Airfield, the airfield of the above, from its IATA airport code * Aboriginal Provisiona ...

, and

APG IV The APG IV system of flowering plant classification is the fourth version of a modern, mostly molecular-based, system of plant taxonomy for flowering plants (angiosperms) being developed by the Angiosperm Phylogeny Group (APG). It was publishe ...

) merge Thismiaceae into

Burmanniaceae Burmanniaceae is a Family (biology), family of flowering plants, consisting of 99 species of herbaceous plants in eight genera. Description These plants are annual or perennial herbs, with generally unbranched stems, some lacking leaves. Some m ...

, noting that some studies have suggested that Thismiaceae, Burmanniaceae and Taccaceae should be separate families, whereas others support their merger. The family has been recognized by some authors (like J. Hutchinson, Chase ''et al.'' 1995, 2000; Caddick ''et al.'' 2000; Neyland 2002; Thiele & Jordan 2002, Merckx ''et al.'' 2006 and Woodward ''et al.'' 2007). Others have supported the APG position of merging the family into

, sometimes as the

tribe The term tribe is used in many different contexts to refer to a category of human social group. The predominant worldwide usage of the term in English language, English is in the discipline of anthropology. This definition is contested, in p ...

Thismieae (Maas-van de Kamer in

Kubitzki system The Kubitzki system is a system of plant taxonomy devised by Klaus Kubitzki, and is the product of an ongoing survey of vascular plants, entitled ''The Families and Genera of Vascular Plants'', and extending to 15 volumes in 2018. The survey, in th ...

Maas-van de Kamer, H. (1998). Burmanniaceae. Pp.154–163 in: Kubitzki, K., Huber, H., Rudall, P.J., Stevens, P.S. & Stützel, T. (eds), ''The Families and Genera of Vascular Plants'', Vol. III, Monocotyledons: Lilianae (except Orchidaceae). Springer-Verlag, Berlin. and others). For those who keep the family separate, it consists of five genera, three (''Afrothismia'', ''Haplothismia'' and ''Oxygyne'') are entirely from Old World, ''Thismia'' is from

tropical The tropics are the regions of Earth surrounding the Equator. They are defined in latitude by the Tropic of Cancer in the Northern Hemisphere at N and the Tropic of Capricorn in the Southern Hemisphere at S. The tropics are also referred to ...

areas of both

America The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

and

Asia Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Asia covers an area ...

, as well as three temperate species in

Illinois Illinois ( ) is a U.S. state, state in the Midwestern United States, Midwestern United States. Its largest metropolitan areas include the Chicago metropolitan area, and the Metro East section, of Greater St. Louis. Other smaller metropolita ...

(U.S.A),

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

and

New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island count ...

, temperate

Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...

and ''Tiputinia'' is from the

Amazon basin The Amazon basin is the part of South America drained by the Amazon River and its tributaries. The Amazon drainage basin covers an area of about , or about 35.5 percent of the South American continent. It is located in the countries of Bolivi ...

. ;List of Genera * '' Afrothismia'' (Engl.) Schltr. * '' Haplothismia'' Airy Shaw * '' Oxygyne'' Schltr. * ''

Thismia ''Thismia'' is a genus of myco-heterotrophic plants in family Burmanniaceae, first described as a genus in 1845. It is native to East and Southeast Asia, New Guinea, Australia, New Zealand, and the Americas. ; Species * '' Thismia abei'' Hatu ...

'' Griff. * '' Tiputinia'' P.E. Berry & C. L. Woodw.

References

External links

Thismiaceae
in L. Watson and M.J. Dallwitz (1992 onwards)
The families of flowering plants
descriptions, illustrations, identification, information retrieval.

{{Taxonbar, from=Q134352 Dioscoreales Monocot families Historically recognized angiosperm families