Chapter IX: Cell Contents

Chlorophyll 182
Leucoplastids 183
Starch grains 183
Occurrence 184
Outline 185
Size 185
Hilum 185
Nature of hilum 188
Inulin 194
Mucilage 194
Hesperidin 196
Volatile oil 196
Tannin 196
Aleurone grains 197
Structure of aleurone grains 197
Form of aleurone grains 197
Description of aleurone grains 198
Tests for aleurone grains 198
Crystals 200
Micro-crystals 200
Raphides 200
Rosette crystals 202
Solitary crystals 205
Cystoliths 210
Forms of cystoliths 210
Tests for cystoliths 215

PART III

HISTOLOGY OF ROOTS, RHIZOMES, STEMS, BARKS,
WOODS, FLOWERS, FRUITS AND SEEDS

CHAPTER I

ROOTS AND RHIZOMES

Cross-section of pink root 219
Cross-section of ruellia root 219
Cross-section of spigelia rhizome 223
Cross-section of ruellia rhizome 226
Powdered pink root 227
Powdered ruellia root 227

CHAPTER II

STEMS

Herbaceous stems 233
Cross-section, spigelia stem 233
Ruellia stem 235
Powdered horehound 237
Powdered spurious horehound 237
Insect flower stems 241

CHAPTER III

WOODY STEMS

Buchu stem 242
Mature buchu stem 242
Powdered buchu stem 245

CHAPTER IV

BARKS

White pine bark 248
Powdered white pine bark 250

CHAPTER V

WOODS

Cross-section quassia 254
Radial-section quassia 254
Tangential-section quassia 258

CHAPTER VI

LEAVES

Klip buchu 260
Powdered klip buchu 262
Mountain laurel 264
Trailing arbutus 264

CHAPTER VII

FLOWERS

Pollen grains 270
Non-spiny-walled pollen grains 273
Spiny-walled pollen grains 273
Stigma papillæ 274
Powdered insect flowers 278
Open insect flowers 280
Powdered white daisies 282

CHAPTER VIII

FRUITS

Celery fruit 285

CHAPTER IX

SEEDS

Sweet almonds 289