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.
1 P. nigra subsp. nigra var. 2  pallasiana (syn. Pinus nigra subsp. pallasiana) (Crimean pine): Crimea. 3  P. nigra subsp. salzmannii in the west of the range, from southern Italy to southern France, Spain and North Africa.4  Needles slender, more flexible, 0.8â1.5 mm diameter, with 1â2 layers of thin-walled hypodermal cells.n the United Kingdom, Pinus nigra is important both as a timber tree and in plantations (primarily Corsican pine subsp.). Recently however, serious problems have occurred with red band needle blight disease, caused by the fungus Dothistroma septosporum, resulting in a major recent decline in forestry planting there.