Part I. Plant Biology

CHAPTER

I. NO TWO PLANTS OR PARTS ARE ALIKE P 1

II. THE STRUGGLE TO LIVE P 4

III. SURVIVAL OF THE FIT P 7

IV. PLANT SOCIETIES P 9

V. THE PLANT BODY P 15

VI. SEEDS AND GERMINATION P 20

VII. THE ROOT--THE FORMS OF ROOTS P 32

VIII. THE ROOT--FUNCTION AND STRUCTURE P 38

IX. THE STEM--KINDS AND FORMS--PRUNING P 49

X. THE STEM--ITS GENERAL STRUCTURE P 59

XI. LEAVES--FORM AND POSITION P 73

XII. LEAVES--STRUCTURE AND ANATOMY P 86

XIII. LEAVES--FUNCTION OR WORK P 92

XIV. DEPENDENT PLANTS P 106

XV. WINTER AND DORMANT BUDS P 111

XVI. BUD PROPAGATION P 121

XVII. HOW PLANTS CLIMB P 129

XVIII. THE FLOWER--ITS PARTS AND FORMS P 133

XIX. THE FLOWER--FERTILIZATION AND POLLINATION P 144

XX. FLOWER-CLUSTERS P 155

XXI. FRUITS P 163

XXII. DISPERSAL OF SEEDS P 172

XIII. PHENOGAMS AND CRYPTOGAMS P 176

XXIV. STUDIES IN CRYPTOGAMS P 182