Night-blooming cereus

Night-blooming cereus is the common name referring to a large number of flowering ceroid cacti that bloom at night. The flowers are short lived, and some of these species, such as Selenicereus grandiflorus, bloom only once a year, for a single night.[1] Other names for one or more cacti with this habit are princess of the night, Honolulu queen (for Hylocereus undatus), Christ in the manger, dama de noche and queen of the night (which is also used for an unrelated plant species).

Hylocereus undatus

Genera and species
A night-blooming cereus in full bloom

While many cacti referred to as night-blooming cereus belong to the tribe Cereeae, other night-blooming cacti in the subfamily Cactoideae may also be called night-blooming cereus. Cacti which may be called by this name include:

Description
A night-blooming cereus before full bloom at Sakherbazar, Kolkata
Selenicereus grandiflorus

Regardless of genus or species, night-blooming cereus flowers are almost always white or very pale shades of other colors, often large, and frequently fragrant. Most of the flowers open after nightfall, and by dawn, most are in the process of wilting. Plants in the same geographical area tend to bloom on the same night. Also for healthy plants there can sometimes be as many as three separate blooming events spread out over the warmest months. The plants that bear such flowers can be tall, columnar, and sometimes extremely large and tree-like, but more frequently are thin-stemmed climbers. While some night-blooming cereus are grown indoors in homes or greenhouses in colder climates, most of these plants are too large or ungainly for this treatment, and are only found outdoors in tropical areas.

Cultivation and uses

The dried flowers of the night-blooming cereus (霸王花) are a common ingredient used in Cantonese slow-simmered soup (traditional Chinese: 老火湯; pinyin: lǎohuǒ tāng; Jyutping: lou5 fo2 tong1).[2] Some night-blooming cereus plants produce fruits which are large enough for people to consume.[3] These include some of the members of the genus Cereus, but most commonly the fruit of the Hylocereus. Hylocereus fruit have the advantage of lacking exterior spines, in contrast to the fruit of cacti such as the Selenicereus fruit, being brightly colored, and having a pleasant taste. Since the late 1990s, Hylocereus fruit have been commercially grown and sold in tropical locations like Australia, the Philippines, Vietnam, Taiwan, and Hawaii.

See also

References
  1. Hecht, Hans (1997). Cacti & Succulents. Sterling Pub. Co. p. 76. ISBN 978-0-8069-0549-5.
  2. Teresa M. Chen (2009). A Tradition of Soup: Flavors from China's Pearl River Delta. North Atlantic Books. p. 122. ISBN 978-1-55643-765-6.
  3. Daniel E. Moerman (2010). Native American Food Plants: An Ethnobotanical Dictionary. Timber Press. p. 73. ISBN 978-1-60469-189-4.
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