Biology:Acharagma aguirreanum
| Acharagma aguirreanum | |
|---|---|
| |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Caryophyllales |
| Family: | Cactaceae |
| Subfamily: | Cactoideae |
| Genus: | Acharagma |
| Species: | A. aguirreanum
|
| Binomial name | |
| Acharagma aguirreanum (Glass & R.A.Foster) Glass
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| Synonyms[2] | |
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Acharagma aguirreanum is a critically endangered microendemic cactus. It has a range of about one square kilometer in the calcareous semi-desert of the Sierra de la Paila in Coahuila, Mexico. Its population is estimated at less than 1000 individuals. Its only major threat is illegal collecting.
Description
Acharagma aguirreanum usually grows singly with a spherical to depressed spherical, soft plant body. It is medium green to purple in color and grows up to 5 centimeters high and 5 to 7 centimeters in diameter. The fleshy warts are somewhat flexible and grow up to 0.5 centimeters in size. Two or more central spines are formed that are difficult to distinguish from the marginal spines. The 13 to 16 marginal spines are often in two rows and are 0.8 to 1.5 centimeters long.
The yellowish to reddish yellow flowers are up to 1.8 centimeters long and up to 2 centimeters in diameter. The greenish-purple fruits are up to 1.2 centimeters long and up to 0.35 centimeters in diameter.[3]
Distribution
Acharagma aguirreanum is widespread in Mexico in the state of Coahuila at the western end of the Sierra de la Paila.
Taxonomy
It was first described as Gymnocactus aguirreanus in 1972 by Charles Edward Glass and Robert Alan Foster.[4] The specific epithet aguirreanum honors the Mexican cactus specialist Gustavo Aguirre Benaides from Parras de la Fuente. Charles Edward Glass placed the species in the genus Acharagma in 1997. Other nomenclature synonyms are Thelocactus aguirreanus (Glass & R.A.Foster) Bravo (1980) and Escobaria aguirreana (Glass & R.A.Foster) N.P.Taylor (1983).
References
- ↑ Anderson, E.F.; Fitz Maurice, B.; Fitz Maurice, W.A. (2002). "Acharagma aguirreanum". IUCN Red List of Threatened Species 2002: e.T40966A48029004. doi:10.2305/IUCN.UK.2002.RLTS.T40966A48029004.en. https://www.iucnredlist.org/species/40966/48029004. Retrieved 12 November 2021.
- ↑ "IUCN Redlist entry for Acharagma aguirreanum". IUCN Red List of Threatened Species. https://www.iucnredlist.org/details/40966/0. Retrieved 2017-04-21.
- ↑ Anderson, Edward F.; Eggli, Urs (2005) (in de). Das grosse Kakteen-Lexikon. Stuttgart (Hohenheim): Ulmer. p. 70. ISBN 3-8001-4573-1.
- ↑ "Cactus and Succulent Journal March-April 1972: Vol 44 Iss 2 : Free Download, Borrow, and Streaming : Internet Archive". 2023-03-25. https://archive.org/details/sim_cactus-and-succulent-journal_march-april-1972_44_2/mode/1up.
- Anderson, E.F.; Fitz Maurice, B.; Fitz Maurice, W.A. (2002). "Acharagma aguirreanum". IUCN Red List of Threatened Species 2002: e.T40966A48029004. doi:10.2305/IUCN.UK.2002.RLTS.T40966A48029004.en. https://www.iucnredlist.org/species/40966/48029004. Retrieved 12 November 2021.
External links
Wikidata ☰ Q5484690 entry
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