Matucana ritteri
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| Matucana ritteri | |
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Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Caryophyllales |
| Family: | Cactaceae |
| Subfamily: | Cactoideae |
| Genus: | Matucana |
| Species: | M. ritteri |
| Binomial name | |
| Matucana ritteri Buining 1959 | |
Matucana ritteri usually grows solitary with flattened spherical, glossy dark green shoots and reaches a height of 3 to 5 cm (1.2 to 2.0 in) with a diameter of 5 to 10 cm (2.0 to 3.9 in). There are twelve to 22 blunt ribs present. The straight to slightly curved brownish-black spines turn gray with age. The one to five central spines are 2 to 4 cm (0.79 to 1.57 in), the seven to 14 radial spines 1 to 3 cm (0.39 to 1.18 in) long.
The crooked, crimson flowers are 7 to 9 cm (2.8 to 3.5 in) long and have a diameter of 4.5 to 5 cm (1.8 to 2.0 in). The bright red and green, scaly fruits reach a diameter of 1 to 1.5 cm (0.39 to 0.59 in).[2]
Distribution
Matucana ritteri is common in the region of La Libertad in Peru, near Otuzco at altitudes of 2500 meters.
