Pelecyphora robbinsiorum
Pelecyphora robbinsiorum | |
---|---|
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Order: | Caryophyllales |
Family: | Cactaceae |
Subfamily: | Cactoideae |
Genus: | Pelecyphora |
Species: | P. robbinsiorum
|
Binomial name | |
Pelecyphora robbinsiorum (W.H.Earle) D.Aquino & Dan.Sánchez
| |
Synonyms | |
List
|
Pelecyphora robbinsiorum known by the common names Cochise pincushion cactus and Cochise foxtail cactus is a species of flowering plant in the family
Description
This cactus lives mostly buried in the ground with only its top few centimeters exposed, reach heights of 2–6 centimeters and the same diameter. . There is a cluster of spines on each areole, surrounded by a tuft of white woolly hairs and tightly packed warts are 5–8 millimeters long. The spines are straight and white, often with dark tips, and measure 1–2 centimeters long. Central spines are usually not present. The 11–17 white marginal spines have a darker tip and are occasionally twisted, 0.3–1.8 centimeters long. The flower is 1–3 centimeters long and has greenish yellow tepals. The flowers are 1.8–2.0 centimeters long and reach a diameter of 1.2–1.5 centimeters. The orange-red, short cylindrical fruits are 6–8.5 millimeters long.[2] The fruit is bright red to orange, succulent, and under a centimeter in length.[3] The plant grows in nearly solid bedrock with little soil or sand, in full sunlight. It can be found in dense colonies of up to 1000 individuals.[4]
Distribution
It is native to southern Arizona in the United States, where it is known only from Cochise County, and northern Sonora in Mexico.[5] There are scattered small occurrences on the north side of the border, and one known population to the south.[6] Because of its rarity and a number of threats to remaining plants, the species was federally listed with a threatened status in 1986.[6]
Threats to this plant include a prolonged drought in the region which is thought to have caused mortality. Drought conditions can also make the living cacti harder to find because they shrink and retract into the ground. Illegal activity at the
Little is known about the
Taxonomy
The first description as Cochiseia robbinsorum by W. Hubert Earle was published in 1976.
References
- ^ Baker, Marc (2010-05-11). "The IUCN Red List of Threatened Species". IUCN Red List of Threatened Species. Retrieved 2023-12-15.
- ISBN 3-8001-4573-1.
- ^ Coryphantha robbinsorum. Flora of North America.
- ^ a b c USFWS. Coryphantha robbinsorum Five-year Review. April 2007.
- ^ a b Escobaria robbinsorum. The Nature Conservancy.
- ^ a b USFWS. Determination of threatened status for Coryphantha robbinsorum. Federal Register January 9, 1986.
- ISSN 0275-6919. Retrieved 2023-12-15.
- JSTOR 42786688. Retrieved 2023-12-15.
- PMC 8799629.
External links
Media related to Pelecyphora robbinsiorum at Wikimedia Commons Data related to Pelecyphora robbinsiorum at Wikispecies