114 KEY TO PLANTS. 
Corolla-lobes imbricate or contorted in 
aestivation. 20. 
(2) Sepals united to the middle or beyond. 24. 
20 (a) Stamens more than twice as many as 
corolla-lobes, 9 or more. Shrubs or 
trees. Leaves undivided. Flowers 
regular. Ternstroemiaceae. 
(2) Stamens as many to twice as many as 
corolla-lobes, rarely more, but only 8. 21. 
21 (2) Styles 5, free or connate at the base. 
Herbs or undershrubs. Stamens 10. 
Leaves usually compound. Flowers 
regular. Anthers dehiscing by longi- 
tudinal slits. Ovary 5 - celled. 
Geraniaceae. 
(0) Style 1. Shrubs or trees, rarely herbs or 
undershrubs, but then stamens 4-8. 
Leaves simple, entire or dentate. 22. 
22 (a) Flowers irregular. Ovary 2-4-celled, with 
1-4 ovules in each cell. Stamens mona- 
delphous. Anthers 4-8, dehiscing by a 
pore at the apex. Polygaleae. 
(b) Flowers regular, rarely slightly irregular, 
but then ovary 5-celled, with numerous 
ovules in each cell. Stamens usually 
free. Shrubs or trees. 23. 
23 (a) Stamens as many as the lobes of the corolla, 
