THE FLOWER SHOOT 



153 



Form of 

 flowers. 



' i Regular, all parts of a set of the same shape or size. Examples, 

 wheel-shaped (rotate), salver-shaped, bell-shaped (campanu- 

 la te), tubular. 



Irregular, some parts of a set of a different shape or size. Ex- 

 amples, butterfly-like (papilionaceous), 2-lipped (labiate), 

 strap-shaped (ligulate). 



Flower parts 

 all free. 



Union of 

 flower 

 parts. 



Flower 

 clusters. 



f Flowers hypogynous. 

 I Calyx polysepalous. 

 [ Corolla polypetalous. 



J Monadelphous, all united in one group. 



Stamens united ^ DiadelphouSj in two groups . 



Carpels united Compound pistil. 



Placentation of f i ocu l e / 2 or more P arietal P^centas. 



compound ' \ Free central placenta. 



pistil. 1 Two or more locules 2 or more axile placentae 



Stamens and petals borne on the calyx tube, perigynous. 

 Calyx joined to the ovary, ovary is inferior (when free from the 



ovary the latter is superior). 



Corymbose flower clusters (Indetermi- Raceme, 

 nate inflorescence). Panicle. 



Thyrsus. 

 Corymb. 

 Umbel. 

 Spike. 

 Head. 

 Spadix.. 

 Catkin. 



f Cyme. 

 Cymose flower clusters (Determinate in- ) Helicoid cyme . 



florescence). 1 Scorpioid cyme. 



