Anomochlooideae is a

subfamily In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end botanical subfamily names with "-oideae", and zo ...

of the true grass

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Poaceae Poaceae ( ), also called Gramineae ( ), is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos, the grasses of natural grassland and species cultivate ...

. It is sister to all the other grasses. It includes

perennial In horticulture, the term perennial ('' per-'' + '' -ennial'', "through the year") is used to differentiate a plant from shorter-lived annuals and biennials. It has thus been defined as a plant that lives more than 2 years. The term is also ...

herbs that grow on the shaded floor of

forest A forest is an ecosystem characterized by a dense ecological community, community of trees. Hundreds of definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing, ...

s in the

Neotropics The Neotropical realm is one of the eight biogeographic realms constituting Earth's land surface. Physically, it includes the tropical terrestrial ecoregions of the Americas and the entire South American temperate zone. Definition In biogeog ...

. There are two genera, '' Anomochloa'' and '' Streptochaeta,'' each in its own tribe.

Description

Anomochlooideae are terrestrial,Anomochlooideae in Flora e Funga do Brasil. Jardim Botânico do Rio de Janeiro. Available at: https://floradobrasil.jbrj.gov.br/FB102235 Accessed on: 04 Jan. 2025 rhizomatous, perennial herbs with pseudopetiolate, broad leaves.Kellogg, E.A. (2015)
I. Subfamily Anomochlooideae Pilg. ex Potztal (1957).
In: Flowering Plants. Monocots. The Families and Genera of Vascular Plants, vol 13. Springer, Cham.

Cytology

The diploid chromosome count of ''Anomochloa'' is 2n = 36, and the chromosome count of ''Streptochaeta'' is 2n = 22.

Taxonomy

It was validly published in 1957 by Eva Hedwig Ingeborg Potztal based on previous work from Robert Knud Friedrich Pilger.subfam. Anomochlooideae Pilg. ex Potztal. (n.d.). International Plant Names Index. Retrieved January 4, 2025, from https://www.ipni.org/n/321655-2 The type genus is '' Anomochloa'' Brongn.

Evolutionary relationships

This subfamily is the most early-diverging lineage of the grasses:

Conservation

''Anomochloa marantoidea'' is almost extinct in the wild.

References

Poaceae subfamilies Grasses of North America Grasses of South America Poaceae {{Poaceae-stub