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Gymnocalycium bayrianum

From Wikipedia, the free encyclopedia

Gymnocalycium bayrianum
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Cactaceae
Subfamily: Cactoideae
Genus: Gymnocalycium
Species:
G. bayrianum
Binomial name
Gymnocalycium bayrianum
H. Till 1987

Gymnocalycium bayrianum is a species of Gymnocalycium from Argentina.[2]

Description

Gymnocalycium bayrianum grows individually with blue-green, reddish, flattened, spherical shoots and reaches heights of 4 to 5 centimeters with diameters of up to 10 centimeters. A large shoot and a taproot are formed. The six to ten ribs are broad and flat at their base and notched above each areole. Central spines are usually not present, but sometimes one is formed. The usually five bent-back, light brown marginal spines have a darker tip and turn gray with age. They are up to 3 centimeters long.

The funnel-shaped, creamy white flowers are up to 3 centimeters long and reach a diameter of 4 centimeters. The gray-green, bluish-tinged fruits are elongated.[3]

  • Ovaries

    Ovaries

  • Flower buds

    Flower buds

Distribution

Gymnocalycium bayrianum is widespread in the Argentine provinces of Salta and Tucumán at altitudes of 1000 to 1500 meters.

Taxonomy

The first description was made in 1987 by Hans Till. The specific epithet bayrianum honors Alfred Bayr (1905–1970), a cactus lover and former president of the Society of Austrian Cactus Friends. A nomenclature synonym is Gymnocalycium spegazzinii subsp. bayrianum (H.Till) Halda (1999).

References

  1. ^ "The IUCN Red List of Threatened Species". IUCN Red List of Threatened Species. 2010-09-21. Retrieved 2023-09-22.
  2. ^ "Gymnocalycium bayrianum in Tropicos".
  3. ^ Anderson, Edward F.; Eggli, Urs (2005). Das grosse Kakteen-Lexikon (in German). Stuttgart (Hohenheim): Ulmer. p. 311. ISBN 3-8001-4573-1.

External links

This page was last edited on 22 September 2023, at 17:01
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