| Echinocereus viereckii | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Caryophyllales |
| Family: | Cactaceae |
| Subfamily: | Cactoideae |
| Genus: | Echinocereus |
| Species: | E. viereckii |
| Binomial name | |
| Echinocereus viereckii Werderm., 1934 | |
Echinocereus viereckii is a species of cactus native to Mexico. [2]
Echinocereus viereckii grows upright or prostrate, branching at the base. Its dull, shiny light green shoots often reach up to 20 centimeters in length and 4 to 4.5 centimeters in diameter. The apex is loosely covered with white-yellowish areole felt, topped by an upright hyaline-yellow spine. It has 8 to 9 ribs, sharply separated at the apex and running straight down, about 6 to 8 millimeters high. These ribs are deeply indented between the areoles, forming mammillary-like humps. The 7 to 9 radial spines spread horizontally, are evenly distributed, and usually 5 to 7 millimeters long. The 4 central spines are thickened at the base and can grow up to 2 centimeters long.
The funnel-shaped flowers are up to 11 centimeters in diameter and are purplish-pink, with a glassy flower tube and light golden brown thorns. [3]
Accepted subspecies: [2]
| Image | Scientific name | Distribution |
|---|---|---|
 | Echinocereus viereckii subsp. morricalii(Říha) N.P.Taylor | Mexico (W. Nuevo León) |
 | Echinocereus viereckii subsp. viereckii | Mexico (SW. Tamaulipas, Nuevo León, Coahuila) |
Echinocereus viereckii is found in the Mexican states of Nuevo León and Tamaulipas.
Erich Werdermann first described the species in 1934, and the specific epithet viereckii honors German plant collector Hans-Wilhelm Viereck. [4]
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Echinocereus rayonesensis is a species of cactus native to Mexico.
Media related to Echinocereus viereckii at Wikimedia Commons
Data related to Echinocereus viereckii at Wikispecies