Bromus brevis

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Bromus brevis
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Poaceae
Subfamily: Pooideae
Genus: Bromus
Species:
B. brevis
Binomial name
Bromus brevis
Synonyms [1]
  • Ceratochloa brevis(Steud.) B.D.Jacks.
  • Bromus brevis festucarioidesCovas & Millott
  • Bromus catharticus var. rupestris(Speg.) Planchuelo & P.M.Peterson
  • Bromus unioloides f. brevis (Steud.) Kloos
  • Bromus unioloides var. brevis(Steud.) Hack.
  • Bromus unioloides var. rupestrisSpeg.

Bromus brevis, is a species of brome grass endemic also known by the common name as pampus brome. [2] It was described by German botanist and zoologist Christian Gottfried Daniel Nees von Esenbeck in 1854 in Synopsis plantarum glumacearum. [3]

Contents

It is endemic to central and southwest Argentina, and introduced and naturalised in New Zealand and Australia. [4] [1]

B. brevis is one of several species in the Bromus catharticus complex within the Bromus section Ceratochloa, all of which are hexaploids with the chromosome count 2n=42. [5]

Description

Bromus brevis is an annual to perennial grass with short, stiffly erect narrow, pubescent-leaved tufts, up to 30-75cm. It usually has short panicle inflorescences (8-15cm), born on erect culms. Spikelets are 1-2 cm, ovate-oblong, with light bicoloured yellowish-green florets. Lemmas are 7-9-nerved, with very short, silky, appressed hairs, and are awnless, mucronate, or have short awns (0.5-0.8mm). [2] [3]

Distribution

The native range in Argentina is in the Pampean, Monte, and Patagonian biogeographical provinces. [4]

It is also introduced and naturalised to the South Island of New Zealand and the Australian states of New South Wales, Tasmania, and Victoria. [4] [1]

References

  1. 1 2 3 "Bromus brevis Steud. | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 2025-10-20.
  2. 1 2 Connor (2000). "Bromus brevis Nees". Flora of New Zealand, Volume V (Poaceae).
  3. 1 2 Steudel, Ernst Gottlieb; Steudel, Ernst Gottlieb (1855). Synopsis plantarum glumacearum. Vol. pars.1 (1855). Stuttgartaiae: J. B. Metzler. p. 326.
  4. 1 2 3 "Bromus catharticus var. rupestris". 2018.
  5. ↑ STEBBINS Jr., G. Ledyard (1949). "The Evolutionary Significance of Natural and Artificial Polyploids in the Family Gramineae". Hereditas. 35 (S1): 461–485. doi:10.1111/j.1601-5223.1949.tb03355.x. ISSN   1601-5223.
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