| Echinocereus poselgeri | |
|---|---|
| |
| Conservation status | |
 Least Concern (IUCN 3.1) | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Caryophyllales |
| Family: | Cactaceae |
| Subfamily: | Cactoideae |
| Genus: | Echinocereus |
| Species: | E. poselgeri |
| Binomial name | |
| Echinocereus poselgeri Lem. | |
| Synonyms | |
| |
Echinocereus poselgeri, also known as the dahlia cactus, is a species of Echinocereus. It is native to Coahuila and southern Texas.
Description
Echinocereus poselgeri typically grows with several spreading shoots, forming a tuberous, dahlia-like rhizome. The dark blue-green shoots are slender, cylindrical, and taper to a point, measuring 60 to 120 cm (24 to 47 in) long and 1 to 2 cm (0.39 to 0.79 in) in diameter. They have eight to ten low, inconspicuous ribs that are not tuberculated. A single, slightly flattened, dark central spine points toward the shoot tip and is up to 9 mm (0.35 in) long. The eight to 16 whitish or grayish marginal spines, which have darker tips, are 2 to 4.5 mm (0.079 to 0.177 in) long.
The funnel-shaped flowers are slightly pinkish-magenta, appearing near the tips of the shoots. They can be up to 6 cm (2.4 in) long and 7 cm (2.8 in) in diameter. The dark green to brown fruits are egg-shaped and covered with persistent wool and thorns.
Distribution
Echinocereus poselgeri is growing in scrub valleys and hills of southern Texas, USA, and the Mexican states of Coahuila, Nuevo León, Tamaulipas, and San Luis Potosí, typically found at low elevations in sandy soil at elevations up to 1150 meters.
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Plant growing in habitat in Nuevo León
Taxonomy
Charles Lemaire first described the species in 1868. The specific epithet poselgeri honors Heinrich Poselger, a German doctor, chemist, and botanist who collected succulent plants in North America from 1849 to 1851.
References
- Corral-Díaz, R.; Goettsch, B.K.; Gómez-Hinostrosa, C.; Terry, M.; Heil, K. (2017). "Echinocereus poselgeri". IUCN Red List of Threatened Species. 2017: e.T151193A121440514. doi:10.2305/IUCN.UK.2017-3.RLTS.T151193A121440514.en. Retrieved 20 November 2021.
- NRCS. "Echinocereus poselgeri". PLANTS Database. United States Department of Agriculture (USDA). Retrieved September 7, 2013.
- "Echinocereus poselgeri". wildflower.org. Archived from the original on 18 August 2024. Retrieved 18 March 2014.
- "Echinocereus poselgeri". cactiguide.com. Retrieved 18 March 2014.
- ^ Anderson, Edward F.; Eggli, Urs (2005). Das grosse Kakteen-Lexikon (in German). Stuttgart (Hohenheim): Ulmer. p. 204. ISBN 3-8001-4573-1.
- Vallicelli, Valentino (2013-08-04). "Echinocereus poselgeri". LLIFLE. Archived from the original on 2024-08-18. Retrieved 2024-06-23.
This article incorporates text from this source, which is available under the CC BY-SA 3.0 license.
- Lemaire, C. (1869). Les cactées: histoire, patrie, organes de végétation. Bibliothèque du jardinier (in French). Maison rustique. p. 57. Archived from the original on 2024-08-18. Retrieved 2024-06-23.
External links
Media related to Echinocereus poselgeri at Wikimedia Commons
Data related to Echinocereus poselgeri at Wikispecies
