Jones: Flora of Illinois H 



16. Leaves alternate. 



23. Steins climbint^; flowers purple (or white); leaves 



ovate or hastate, often 3-lobed or 3-divided 



107. Solan ACEAE 



23. Stems not climbing. 



24. Corolla of united petals, blue, white or red; leaves 

 pinnate or pinnately lobed; fruit a capsule. 

 25. Leaflets entire; style 1 104. Polemoniaceae 



25. Leaflets toothed or lobed; styles 2, or style 2- 



cleft 106. Hydrophyllaceae 



24. Corolla of separate or nearly separate petals, or 

 petals none, or only one. 



26. Flowers spurred. 



27. Stamens numerous; fruit of follicles 



3. Ranunculaceae 



27. Stamens 6; fruit a capsule 



14. FUMARIACEAE 



26. Flowers not spurred. 



28. Leaflets 3, obcordate, otherwise entire; 



flowers yellow; fruit a capsule 



38. OXALIDACEAE 



28. Leaflets not obcordate. 

 29. Leaves with stipules. 



30. Flowers small, green, unisexual; 

 leaves digitately divided into 5- 

 11, serrate, acuminate divisions 

 72. Cannabinaceae 



30. Flowers pink, yellow, white, or 

 purple. 

 31. Flowers small, pink; leaves pin- 

 nate, the leaflets incised; 



plants annual, pubescent 



....Erodium in 36. Geraniaceae 

 31. Flowers yellow, white, or purple. 

 32. Leaflets entire; fruit a leg- 

 ume 54. Leguminosae 



32. Leaflets toothed or lobed; 

 fruit not a legume. 

 33. Stamens and petals pe- 

 rigynous 



53. ROSACEAE 



33. Stamens and petals hy- 

 pogynous, or flowers 

 unisexual and the 



plants dioecious 



3. Ranunculaceae 



29. Leaves without stipules. 



34. Petals and sepals each 3 ; flowers 

 very small, axillary; annual 



plants with pinnate leaves 



39. Limnanthaceae 



