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

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