Harold A. Senn

1912 – 1997

• A new species of Agropyron from the Great Lakes
• Additional records of old field birch Betula populifolia Marsh., in Ontario
• Chromosome number relationships in the Leguminosae
• Crotalaria
• Early studies of milkweed utilization in Canada
• Notes on Rare Canadian Plants II
• The Canadian Distribution of Lithospermum croceum Fern
• The relation of anatomy and cytology to the classification of the Leguminosae