The surname Nguyen is believed to have originated in the Chinese surname Ruan (in the Mandarin language) or Yuen (Cantonese), owing to Chinaâs long domination over Vietnam.
Tinea nigra is a fungal infection that is mainly seen on the palms of the hands or soles of the feet causing a dark brown to black discoloration of the affected skin. The word tinea means a fungal infection and nigra means black.
Rust fungus is fairly easy to identify on grass. It looks like a rusty powder and may cause the lawn to turn yellow, orange, red or brown. After walking on a lawn infected with rust fungi, shoes might have the yellow or orange powder on them.The disease eventually causes grass blades to develop raised pustules.This fungus usually shows up during hot weather.t looks like a rusty powder and may cause the lawn to turn yellow, orange, red or brown. After walking on a lawn infected with rust fungi, shoes might have the yellow or orange powder on them.