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“Emma” is a clone whose botanical classification remains a subject of debate within the community. While some sources associate it with Trichocereus bridgesii, other growers note morphological features that deviate from typical *bridgesii* traits. The plant exhibits large convex areoles and distinct notches, which some community members compare to *T. knuthianus*, *T. puquiensis* (or clone HB01), or hybrids of “Torres & Torres” and “Yowie”.
According to community observations, the spine morphology features bases that do not align with the typical rectangular bases of pure *bridgesii*, suggesting a potential *T. macrogonus* ancestry or hybrid origin.
The origin of the name “Emma” involves two distinct threads in the community:
No specific cultivation requirements were detailed in the discussion. Standard care for *Trichocereus* species applies: grow in a highly gritty, well-draining soil mix, provide ample sunlight, and water deeply only when the substrate is completely dry. Protect from severe frost and extreme weather events, as the original mother plant was noted to have suffered a major weather-related setback.