Dictionary > Glochid

Glochid

Definition
noun, plural: glochids
Any of the hair-like spine or bristle often with a barbed tip on cactus
Supplement
Glochids (or glochidia, singular: glochidium) are hair-like spines or bristles found on the cactus body, particularly of those in the subfamily Opuntioideae. Opuntioideae is a subfamily of the family Cactaceae and exemplified by Opuntia (prickly pear) and cholla.
Glochids arise from the areoles. Areoles are bumps on the body of the cactus. Most glochids are barbed. And a simple touch would easily detach the glochids from the cactus body. The glochids lodge in the skin and because of the barbs removing them on skin may be difficult. It may cause dermatitis that could persist for months, especially without treatments. Glochids that come in contact to the skin may cause skin irritation. Thus, they are essential to the cactus for their protective role.
The prickly pear cactus, endemic to Central America, is sometimes used as an ornamental plant and also cultivated for its edible fruit. Care should be taken into account since its fruit also bears glochids. As such, consumption of this fruit may affect the hard palate and the oral mucosa. The lesion may resemble scabies and is referred to as sabra dermatitis.1
Also called:

  • glochis
  • glochidium

See also:

  • cactus
  • Reference(s):

    1 Modi, G. M., Doherty, C. B., Katta, R., and Orengo, I. F. (2009). Irritant Contact Dermatitis from Plants. Dermatitis 20(2):63-78. Retrieved from ://www.medscape.com/viewarticle/706404-2.


    You will also like...

    Gene Pool and Speciation
    The Gene Pool and Population Genetics

    According to Charles Darwin's theory of natural selection, preferable genes are favored by nature in the gene pool, and ..

    Digestion and Absorption of Food
    Digestion and Absorption of Food

    The gastrointestinal system breaks down particles of ingested food into molecular forms by enzymes through digestion and..

    Community Patterns

    Learn about community patterns and the ecological factors influencing these patterns. Revisit some of the ecosystems you..

    Selective Breeding
    Selective Breeding

    Gregor Mendel's studies into Monohybrid and Dihybrid crossing and Charles Darwin's study of evolution and natural select..

    running freshwater community
    Running Water Freshwater Community Factors

    This tutorial noted some of the physical and chemical factors that provide the framework of a running water community in..

    primitive arthropods
    Arthropods

    The arthropods were assumed to be the first taxon of species to possess jointed limbs and exoskeleton, exhibit more adva..

    Related Articles...

    No related articles found

    See all Related Topics