ANALYTICAL KEY 



21 



Leaves alternate or if opposite with no trace of stipules. 

 Stamens free from the corolla or nearly so. 

 Style 1 Ericaceae, 



Style none Aqijifoliackae, 



Stamens in the notches of the corolla; style 1 Diapknsiaceae, 

 Stamens on the tube of the corolla. 

 Stamens 4. 

 Leafy-stemmed; leaves opposite ; corolla petaloid 



Vekbenaceae, 

 Plantaginaceae, 



()25 

 554 

 642 



BORAGINACEAE, 



(rarely in) Breweria, 



Convolvulaceae, 

 Hydrophyllaceae. 



Con VOL vulac e ae, 

 Solanaceae, 



acanthaceae, 

 Verbenaceae, 



743 

 679 



669 



668 

 676 



673 

 670 



668 

 712 



742 



688 



Acaulescent; corolla scarious 

 Stamens 5 or rarely more. 

 Fruit of 2 or 4 seed-like nutlets 

 Fruit a few-many-seeded pod. 

 Styles 3 

 Styles 2. 

 Pod few (mostly 4)-seeded 

 Pod many-seeded 

 Style 1, often branched. 

 Branches of the style (or at least the lobes of 

 the stigma) 3. 

 Not twining Polemoniaceae 



Twining Ipomoea 



Branches of the style or lobes of the stigma 2 

 or rarely 4. 

 Seeds few, mostly 4 

 Seeds many 

 O. Stamens fewer than the corolla-lobes. 

 Stamens with anthers 4, in pairs. 

 Ovary 2-celled ; cells several-seeded 

 Ovary 2-4-celled ; cells 1-seeded 

 Stamens with anthers only 2 or rarely 3. 

 Ovary 4-lobed 

 Ovary 2-celled, not 4-lobed. 

 Herbs. 

 Acaulescent; corolla scarious Plantaginaceae, 



Leafy-stemmed ; corolla not scarious Veronica, 



Trees or shrubs Oleaceae, 



. Corolla irregular S. 

 S. Stamens with anthers 5. 



Stamens free from the corolla; anther-cells opening at the 



apex Rhododendron, 631 



Stamens inserted on the corolla. 

 Ovary deeply 4-lobed around the style Echium, 688 



Ovary not deeply lobed, many-ovuled. 

 Filaments or some of them woolly Verhascum, 719 



Filaments not woolly Hyoscyamiis, 716 



S. Stamens with anthers 2 or 4. 



Ovules solitary in the 1-4 cells. 

 Ovary 4-lobed ; style rising from between the lobes Labiatae, 690 



Ovary not lobed ; style from its apex. 

 Ovary 1-celled ; fruit turned downwards Phrymaceae, 743 



Ovary 2-4-celled ; fruit not turned downwards Verbenaceae, 688 

 Ovules 2-many in each cell. 



Lycopus, 709 



743 



726 

 650 



