Echeveria purpusorum is a species of succulent perennial plant in the family Crassulaceae. It is native to the arid regions of southern Mexico, specifically within the states of Puebla and Oaxaca.
Taxonomy and Etymology
The species belongs to the genus Echeveria, which is comprised of approximately 150 species of stonecrops. It was named in honor of Carl Albert Purpus and his brother Joseph Anton Purpus, German botanists and plant collectors who documented numerous species in Mexico during the late 19th and early 20th centuries.
Physical Characteristics
Echeveria purpusorum is a slow-growing succulent that forms small, compact rosettes, typically reaching 6 to 8 centimeters in diameter.
- Leaves: The leaves are thick, stiff, and ovate-acuminate (tapering to a sharp point). They are characterized by a deep olive-green or grey-green coloration, heavily mottled with small, reddish-brown or dark maroon spots and striations, particularly on the underside and along the margins.
- Flowers: The plant produces a small inflorescence, usually a cyme, featuring reddish-orange or coral-colored flowers with yellow tips. Flowering typically occurs in late spring or early summer.
Habitat and Distribution
The species is endemic to Mexico, where it grows in rocky environments at high altitudes. It is adapted to survive in crevices with minimal soil and high exposure to sunlight. Due to its limited natural range and slow growth rate, it is considered relatively uncommon in the wild.
Cultivation and Identification
Echeveria purpusorum is popular in horticulture for its distinct foliage and architectural form. In cultivation, it requires well-draining soil and bright, indirect light to maintain its compact shape and intense coloration.
A common point of confusion in the nursery trade involves the hybrid Echeveria 'Dionysos'. Most plants commercially labeled as E. purpusorum are actually E. 'Dionysos', a cross between E. purpusorum and an unidentified species. The true E. purpusorum species is distinguished by its significantly more elongated and pointed leaves compared to the wider, more rounded leaves of the 'Dionysos' hybrid.
