Despite the common names ringworm and dermatophyte, the disease is caused by a fungus, not a worm or plant. Trichophyton, Microsporum, and Epidermophyton are the most common genera that cause ringworm in humans. These organisms feed on keratin, the major structural component of hair, skin and nails.
Thuja occidentalis 'Nigra'. Naturally broad, pyramidal evergreen shrub displays deep green, scalelike needles arranged in flat sprays. New light green needles emerge in spring, deepening in color as they mature. Deep green color adds contrast to winter landscape.
In Spanish, negro (feminine negra) is most commonly used for the color black, but it can also be used to describe people with dark-colored skin. In Spain, Mexico and almost all of Latin America, negro (lower-cased, as ethnonyms are generally not capitalized in Romance languages) means 'black person'.