The plant you're referring to is known as "Saussurea obvallata," and it goes by several common names such as Brahma Kamal, Night Queen, Lady of the Night, King of Himalayan Flowers, and Sacred Saussurea. It's not to be confused with the Night-blooming Cereus, which is a different species.

Here is a description of the Saussurea obvallata plant:

Botanical Information:

• Scientific Name: Saussurea obvallata
• Common Names: Brahma Kamal, Night Queen, Lady of the Night, King of Himalayan Flowers, Sacred Saussurea
• Family: Asteraceae
• Habitat: Native to the Himalayan region, found at high altitudes, typically between 3,000 to 4,600 meters (9,800 to 15,100 feet) above sea level.

Description:

• Appearance: Saussurea obvallata is a herbaceous perennial plant known for its striking appearance. It has large, showy, and fragrant flowers. The flowers are typically white or pale pink, with a central yellow disk, and have a unique and intricate structure.

• Size: The plant can reach a height of around 10 to 20 inches (25 to 50 centimeters) and typically forms a basal rosette of leaves.

• Blooming Time: This plant is known for its night-blooming flowers, often releasing its fragrance after dark. The bloom time typically occurs during late summer.

• Fragrance: The flowers emit a pleasant and strong fragrance, especially during the nighttime, which adds to its allure.

Cultural Significance:

• Saussurea obvallata is highly regarded in Hindu culture, where it is considered sacred and is associated with Lord Brahma. It is often used in religious ceremonies and offerings.

Conservation Status:

• The plant is considered endangered and protected in many regions due to over-harvesting and habitat loss.

Growing Conditions:

• Saussurea obvallata thrives in high-altitude regions with well-drained, sandy, or rocky soils.
• It prefers cool temperatures and can tolerate freezing conditions.
• It can be challenging to cultivate in lower-altitude regions.

Please note that growing this plant may require specific environmental conditions, and it's important to respect local conservation efforts and regulations, especially in its natural habitat, where it is endangered.