The Sculptural Rarity: Euphorbia mayurnathanii var. crest

A botanical masterpiece for the serious collector, this crested marvel transforms a rare Indian endemic into a living piece of abstract art.

1. Origin & History of Name: The species is named in honor of P.V. Mayurnathan, a prominent Indian botanist and former curator at the Madras Museum who authored "The Wild Flowers of the Madras Presidency." It was formally described in the mid-20th century. The term var. crest (cristata) refers to a genetic mutation where the apical meristem (growing point) elongates into a fan-like ridge rather than a single point.
2. Morphology: This specimen exhibits fasciation, resulting in a convoluted, wavy "brain-like" structure. The epidermis is a rich waxy green, often developing a woody "corking" texture at the base as it matures. Unlike the standard upright columns, the crested form suppresses traditional costae (ribs), instead folding into dense, fleshy ridges protected by small, twin spines.
3. Habitat & Origin: The base species, Euphorbia mayurnathanii, is a narrow endemic originally found in the Palakkad Gap of Kerala, India. It is famously considered "Extinct in the Wild" (EW) by many botanical surveys, with the entire global population now existing solely in cultivation. This crested variety is a cultivar selected from nursery stock, making it a vital part of ex-situ conservation efforts.
4. Cultivation Profile:
   • Substrate: Use a strictly mineral-based mix (70% grit/pumice/leca, 30% organic matter). Avoid standard garden soil which retains too much humidity in the Indian climate.
   • Light: Thrives in bright, indirect sunlight. In the Indian subcontinent, provide 40–50% shade cloth during peak summer (March–June) to prevent epidermal scorching.
   • Water/Dormancy: Water deeply only when the medium is completely bone-dry. During the monsoon, restrict water entirely if humidity is high to prevent fungal rot. The plant enters a semi-dormant state in the peak of winter.
5. Scientific/Historical Anecdote: Euphorbia mayurnathanii is often cited as a "Lazarus species" in botanical circles. For decades, it was known to science only through three original specimens collected from a single ledge in Kerala. Because it disappeared from its original habitat shortly after discovery, every plant in existence today—including this crested mutation—is a descendant of those few original plants saved by botanists.