Lathyrus japonicus Lathyrus japonicus seeds with mm ruler on bottom. Lathyrus japonicus fruits with a few seeds visible. Lathyrus japonicus fruits. Lathyrus japonicus fruits. Lathyrus japonicus individual with several fruits. Lathyrus japonicus fruits. Lathyrus japonicus immature fruits. Lathyrus japonicus flowers and immature fruits. Lathyrus japonicus fruit containing immature seeds. Lathyrus japonicus fruit with distorted (non viable) seed. Lathyrus japonicus seedlings. Lathyrus japonicus plant grown in a 4-inch container. Lathyrus japonicus flowers.