1
出版事項: 1988
Superior document: Smithsonian contributions to botany Number 72
2
出版事項: 1989
Superior document: Smithsonian contributions to botany Number 69
3
出版事項: 1989
Superior document: Smithsonian contributions to botany Number 68
4
出版事項: 1985
Superior document: Smithsonian contributions to botany 59
5