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A TEXTBOOK OF THEORETICAL BOTANY 



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Fig. 1209. — Ciiphea micropetala. A, Side view of flower. B, Flower in longi- 

 tudinal section. The entrance to the flower is guarded by the sticky hairs at 

 the ends of the sepals. {After Kerner.) 



Fig. 1210. — Centranthiis ruber. Longitudinal section of 

 flower, showing separate nectary spur lined with 

 hairs. {After Kerner.) 



