Published in Contributions From The University of Michigan Herbarium, in 1980, in volume 14, pages 11-15

Published in Contributions From The University of Michigan Herbarium, in 1980, in volume 14, pages 17-23

Published in Contributions From The University of Michigan Herbarium, in 1980, in volume 14, pages 25-52

Published in Contributions From The University of Michigan Herbarium, in 1980, in volume 14, pages 53-56

Published in Contributions From The University of Michigan Herbarium, in 1980, in volume 14, pages 57-60

Published in Contributions from the University of Michigan Herbarium, in 1980, in volume 14, pages 61-67

Published in Contributions From The University of Michigan Herbarium, in 1980, in volume 14, pages 69-73

Published in Contributions from the University of Michigan Herbarium, in 1980, in volume 14, pages 75-82

Published in Contributions From The University of Michigan Herbarium, in 1980, in volume 14, pages 83-84

Published in Contributions from the University of Michigan Herbarium, in 1980, in volume 14, pages 85-97

Published in Contributions From The University of Michigan Herbarium, in 1980, in volume 14, pages 141-152

Published in Contributions From The University of Michigan Herbarium, in 1980, in volume 14, pages 153-203