- The tapetum was glandular tapetum of heteromorphism development of the gynoecium was normal, the ovary was solitary carpel and unilocular, it was unitegmic，tenuinacellar and anarropous.
- The trapper leads a solitary life in the mountains.
- He lived in a solitary woodland.
- His childhood was repressed and solitary.
- A solitary rider was seen in the distance.