40 



42 



43 



INTRODUCTION. 



Styles 3 to 5, each one deeply divided. Leaves fringed with 

 glandular hairs ...... DROSERA (p. 171). 



Stigmas 4, sessile. Leaves broad, entire, one on the stem. 



PARNASSIA (p. 170). 



Styles 5. Leaves all radical, entire . PLUMBAGINE^B (p. 363). 



Styles 3. Procumbent plant, with very small white and green 

 flowers ....... CORRIGIOLA (p. 368). 



Styles 5. Flowers blue ..... LINUM (p. 83). 



Irregular Polypetals with one free, simple, or compound ovary. 



Flowers with a spur or pouch at the base ..... 42 



Flowers not spurred ......... 44 



Stamens numerous ..... DELPHINIUM (p. 13). 



Stamens 6, united in two clusters . . FUMARIACE-S: (p. 20). 

 Stamens 5 ........... 43 



Sepals 5. Petals 5, spreading, one of them spurred VIOLA (p. 53). 

 Outer sepals 2. One inner sepal, large, hooded, and spurred. 



Petals 1 outer, entire, 2 inner lobed . IMPATIENS (p. 95). 

 f Petals small, deeply cut. Stamens more than 8, free EESEDA (p. 50). 

 I Petals 5, papilionaceous. Stamens 10, all or 9 united. 



44 J PAPIL10NACE2E (p. 100). 



1 Petals and sepals in pairs or in fours. Stamens 6 . . .45 

 Sepals 5, of which 2 are large. Petals 3 or 5, small. Stamens 

 I 8, united in two clusters .... POLYGALA (p. 56). 



{Petals 4, spreading, 2 large and 2 small. Stamens free. 

 CRUCIFER^: (p. 22). 

 Petals 4, small, erect in two pairs. Stamens united in two 

 clusters ....... FUMARIACE^E (p. 20). 



Polypetals with an inferior ovary. 



Stamens 10 or fewer, of the same number as or twice the petals 47 

 46-{ Stamens 12 ........ LYTHRUM (p. 155). 



Stamens indefinite, usually numerous ..... 50 



"Petals 5. Stamens 10 .... SAXIFRAGA (p. 165). 



Petals 5. Stamens 5 ......... 48 



47-! Petals 3. Aquatic plants with diclinous flowers. 



HYDROCHARIDE^I (p. 433). 



^Petals 2 or 4. Stamens 2, 4, or 8 ...... 49 



'Herbs. Fruit separating into 2 dry 1 -seeded carpels. 



UMBELLIFER^G (p. 174). 

 48-[ Shrubs. Fruit a berry, with several seeds . KIBES (p. 163). 



Evergreen climber. Fruit a berry, with 2 to 5 seeds. 



HEDERA (p. 203). 



. Q /Fruit a berry. Shrubs or herbs .... CORNUS (p. 204). 

 ay \Fruit dry, capsular. Herbs . . . ONAGRACE^E (p. 149). 



f Calyx of 2 sepals ..... PORTTJLACEJB (p. 76). 

 50-! Calyx of 4, 5, or twice that number of teeth or divisions. 



[ ROSACEJE (p. 127). 



Monopetdls with an inferior ovary. 



Leaves alternate or radical ........ 52 



Leavesoppositeorwhorled ....... 54 



