Solemn means someone or something serious, sincere or impressive. 1  An example of solemn is how someone's face looks when worried about a sick friend.
Symptoms of anthracnose are fairly common early in the season on lower leaves and later in the season on upper leaves. However, it is normally not an economic problem. Drift or contact from chemicals, such as paraquat or glyphosate, can also cause spots on corn leaves. Paraquat injury on corn. These spots can also be confused with holcus spot, but an obvious pattern should be visible throughout the field.
Warning signs of diabetes include changes in skin color on the feet, especially if skin turns from red to blue to black. Patients should watch for a red or black spot within a callus or corn on the foot, notes the Society of Chiropodists and Podiatrists. A change in skin color delineates a lack of circulation to the feet commonly caused by diabetes. Black spots on calluses and corns should be examined as soon as possible for localized bleeding under the skin caused by excessive pressure. These spots may become ulcers if left untreated, and ulcers require more complicated treatment regimens.