This view of the cactus Mammillaria marksiana shows its pattern of prominent tubercles, with the spines emanating from each tubercle's tip.

See also: tubercle (anatomy)

A tubercle is generally a wart-like projection, but it has slightly different meaning depending on which family of plants or animals it is used to refer to. In anatomy a tubercle is a round Nodule, small Eminence, or Warty outgrowth found on Bones skin or within the lungs in Tuberculosis

In the case of certain orchids and cacti, it denotes a round nodule, small eminence, or warty outgrowth found on the lip. A cactus (plural cacti) is any member of the Spine plant family Cactaceae, native to the Americas A wart (also known as verruca) is generally a small rough Tumor, typically on hands and feet but often other locations that can resemble a Cauliflower The labellum (or Lip) is part of an Orchid, Canna or other less known flower that serves to attract Insects that Pollinate the flower They are also known as podaria, which is podaria in its plural form. When referring to some members of the pea family, it is used to refer to the wart-like excrescences that are found on the roots. Fabaceae or Leguminosae is a large and economically important family of Flowering plants which is commonly known as the legume family, pea

When it is used in relation to certain dorid nudibranchs such as Peltodoris nobilis, it means the nodules on the dorsum of the animal. A nudibranch (pronounced (BrE or (AmE is a member of one Suborder of soft-bodied shell-less marine Opisthobranch Gastropod Mollusks Peltodoris nobilis, Common names sea lemon, or the noble dorid, is a Species of colorful sea Slug, a dorid Nudibranch

External links

Tubercle at Cactus-Art.biz