40 



41 



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 . PLUMBAGINEJB (p. 363). 



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

 flowers CORRIGIOLA (p. 368). 



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



Irregular PoLy petals 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^B (p. 20). 



Stamens 5 43 



Sepals 6. 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 

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

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



PAPILIONACE^B (p. 100). 

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



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



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

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

 /"Petals 4, spreading, 2 large and 2 small. Stamens free. 

 45 J CRUCIFER.E (p. 22). 



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

 I clusters FUMARIACE^E (p. 20). 



Polypetala 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^E (p. 433). 



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



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



UMBELLIFER^E (p. 174). 



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

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



HEDERA (p. 203). 



4fl | Fruit a berry. Shrubs or herbs . . . . CORNUS (p. 204). 

 \ Fruit dry, capsular. Herbs . . . ONAGRACE.* (p. 149). 



| Calyx of 2 sepals PORTULACE^ (p. 76). 



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



I ROSACEJB (p. 127). 



Monopetalt with an inferior ovary. 



, , / Leaves alternate or radical 5i 



01 \Leaves opposite or whorled 0" 



