Published in Contributions From The University of Michigan Herbarium, in 1999, in volume 22, pages 1-19

Published in Contributions From The University of Michigan Herbarium, in 1999, in volume 22, pages 21-28

Published in Contributions From The University of Michigan Herbarium, in 1999, in volume 22, pages 29-31

Published in Contributions From The University of Michigan Herbarium, in 1999, in volume 22, pages 33-46

Published in Contributions From The University of Michigan Herbarium, in 1999, in volume 22, pages 47-93

Published in Contributions from the University of Michigan Herbarium, in 1999, in volume 22, pages 95-104

Published in Contributions From The University of Michigan Herbarium, in 1999, in volume 22, pages 105-119

Published in Contributions From The University of Michigan Herbarium, in 1999, in volume 22, pages 121-130

Published in Contributions From The University of Michigan Herbarium, in 1999, in volume 22, pages 131-134

Published in Contributions from the University of Michigan Herbarium, in 1999, in volume 22, pages 135-187