Acanthospermum australe

Acanthospermum australe (Paraguayan starburr,[3][4] Ihi kukae hipa, Paraguay bur, Paraquay starbur, Pipili, Sheepbur, Spiny-bur) is a South American species of herbaceous plants first described as a species in 1758.[5][6][7]

Paraguayan starburr
1820 illustration[1]
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Asterids
Order:
Asterales
Family:
Asteraceae
Genus:
Acanthospermum
Species:
A. australe
Binomial name
Acanthospermum australe
Synonyms[2]

Distribution

The species is native to:[8]

  • South America, within Brazil, French Guiana, Guyana, Suriname, Venezuela, Argentina, Paraguay, Uruguay, Bolivia, and Colombia
  • Caribbean, within Grenada; Martinique; St. Vincent, and Grenadines

It has been introduced in China, and is an invasive species in parts of the United States, Canada, and South Africa. It is currently a widespread pioneer in the tropics and sub-tropics.[9][10][11]

Extracts

Extracts of Acanthospermum australe have in vitro antiviral activity against herpesvirus and poliovirus,[12] but clinical effects have not been studied.

gollark: Perhaps the answer lies in competition maths problems. Those generally have something weird like the year as a solution, so they could probably be tweaked to 1, right?
gollark: Of course, a smart person would just type it into wolframalpha. I'll check if it accepts this.
gollark: Yes, that.
gollark: Dan just said it had to be a very hard problem which is also hard to understand for laymen with an answer of 1.
gollark: I see.

References
  1. Nova genera et species plantarum, vol. 4: plate 397, by Humboldt, F.H.A. von, Bonpland, A., Kunth, K.S.
  2. The Plant List, Acanthospermum australe (Loefl.) Kuntze
  3. Acanthospermum australe. United States Department of Agriculture Plants Profile
  4. "Acanthospermum australe". Integrated Taxonomic Information System.
  5. Loefling, Pehr. 1758. Iter Hispanicum 268–269
  6. Kuntze, Carl Ernst Otto. 1891. Revisio Generum Plantarum 1: 303 in German
  7. Tropicos, Acanthospermum australe (Loefl.) Kuntze
  8. "Acanthospermum australe". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 12 January 2018.
  9. Tropicos specimen listings, Acanthospermum australe
  10. Flora of North America Vol. 21 Page 37 Acanthospermum australe (Loefling) Kuntze, Revis. Gen. Pl. 1: 303. 1891.
  11. Biota of North America Program 2013 county distribution map
  12. Rocha Martins, LR; Brenzan, MA; Nakamura, CV; Dias Filho, BP; Nakamura, TU; Ranieri Cortez, LE; Garcia Cortez, DA (2011). "In vitro antiviral activity from Acanthospermum australe on herpesvirus and poliovirus". Pharmaceutical Biology. 49 (1): 26–31. doi:10.3109/13880209.2010.493177. PMID 20819023.


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