Holcus spot on corn. Most spots will be surrounded by a reddish or brownish margin. Lesions may be surrounded by a yellow halo. Look-Alikes. Other things can cause spots to occur on young corn leaves that can be confused with holcus spot.
Casual elegant is extremely different from formal, so do not bring out your ball gowns for the former category. Those exquisite dresses and tuxedos have a special category all their own, considered formal attire. This category is rare, but when it is suggested, it is imperative that it be followed.
When casual is inappropriate, resorts like to enforce the elegant resort dress code. This means that you should dress for an upscale setting and leave the tennis shoes behind. There is a difference between daywear and evening attire, though. For men, khakis or slacks matched with a collared shirt are the minimum.