No. 1 (pp. 1-60) issued May 22, 1922 TABLE OF CONTENTS NOTES ON NORTH AMERICAN TREES. IX. By C. S. Sargent.... NEW SPECIES, VARIETIES AND COMBINATIONS FROM THE HERBARIUM AND COLLECTIONS OF THE ARNOLD ARBORETUM. By Alfred Rehder. d. ANALYTICAL KEYS TO THE SPECIES OF AMERICAN WILLOWS.... A LIST OF THE SHRUBS OF LOUISIANA. By R. S. Cocks. NOTES ON NORTH AMERICAN TREES. X. By C. S. Sargent. NEW SPECIES, VARIETIES AND COMBINATIONS FROM THE HERBARIUM |