Biology:Anomochlooideae

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Anomochlooideae is a subfamily of the true grass family Poaceae. It is sister to all the other grasses. It includes perennial herbs that grow on the shaded floor of forests in the Neotropics. There are two genera, Anomochloa and Streptochaeta, each in its own tribe.

Description

Anomochlooideae are terrestrial,[1] rhizomatous, perennial herbs with pseudopetiolate, broad leaves.[2]

Cytology

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

Taxonomy

It was validly published in 1957 by Eva Hedwig Ingeborg Potztal based on previous work from Robert Knud Friedrich Pilger.[3] The type genus is Anomochloa Brongn.[4][3]

Evolutionary relationships

This subfamily is the most early-diverging lineage of the grasses:[5]

Poaceae

Anomochlooideae

Pharoideae

Puelioideae

BOP clade

PACMAD clade

Conservation

Anomochloa marantoidea is almost extinct in the wild.[2]

References

  1. 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
  2. 2.0 2.1 2.2 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.
  3. 3.0 3.1 subfam. Anomochlooideae Pilg. ex Potztal. (n.d.). International Plant Names Index. Retrieved January 4, 2025, from https://www.ipni.org/n/321655-2
  4. Cite error: Invalid <ref> tag; no text was provided for refs named Tropicos
  5. Grass Phylogeny Working Group II (2012). "New grass phylogeny resolves deep evolutionary relationships and discovers C4 origins". New Phytologist 193 (2): 304–312. doi:10.1111/j.1469-8137.2011.03972.x. PMID 22115274. Bibcode2012NewPh.193..304..  open access

Wikidata ☰ Q16828771 entry