Published in Contributions From The University of Michigan Herbarium, in 1992, in volume 18, pages 3-38
Published in Contributions From The University of Michigan Herbarium, in 1992, in volume 18, pages 39-41
Published in Contributions From The University of Michigan Herbarium, in 1992, in volume 18, pages 43-71
Published in Contributions From The University of Michigan Herbarium, in 1992, in volume 18, pages 73-86
Published in Contributions From The University of Michigan Herbarium, in 1992, in volume 18, pages 87-90
Published in Contributions From The University of Michigan Herbarium, in 1992, in volume 18, pages 91-97
Published in Contributions From The University of Michigan Herbarium, in 1992, in volume 18, pages 99-103
Published in Contributions From The University of Michigan Herbarium, in 1992, in volume 18, pages 107-111
Published in Contributions From The University of Michigan Herbarium, in 1992, in volume 18, pages 113-130
Published in Contributions From The University of Michigan Herbarium, in 1992, in volume 18, pages 131-140
Published in Contributions From The University of Michigan Herbarium, in 1992, in volume 18, pages 141-147