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...

    squirrel
    Animal Water Regulation

    Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understa..

    Plant Water Regulation
    Plant Water Regulation

    Plants need to regulate water in order to stay upright and structurally stable. Find out the different evolutionary adap..

    Water Cycle
    The Water Cycle

    The water cycle (also referred to as the hydrological cycle) is a system of continuous transfer of water from the air, s..

    Adaptation Tutorial
    Adaptation Tutorial

    Adaptation, in biology and ecology, refers to the process or trait through which organisms or the populations in a habit..

    Plant biology
    Plant Biology

    Plantlife can be studied at a variety of levels, from the molecular, genetic and biochemical level through organelles, c..

    Early Earth
    The Origins of Life

    This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..

    Related Articles...

    No related articles found

    See all Related Topics