ANALYTICAL KEY 



21 



Plantaginaceae, 743 



boraginaceae, 679 



(rarely in) Breweria, 669 



convolvulaceae, 668 

 Hydrophyllaceae, 676 



Leaves alternate or if opposite with no trace of stipuUa. 

 Stamens free from the corolla or nearly so. 

 Style 1 Ericaceae, 625 



Style none Aquifoliaceae, 554 



Stamens in the notches of the corolla; style 1 Diapensiaceae, 642 

 Stamens on the tube of the corolla. 

 Stamens 4. 

 Leafy-stemmed ; leaves opposite ; corolla petaloid 



Verbenaceae, 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, 673 



Twining Ipomoea, 670 



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, 743 



Leafy-stemmed ; corolla not scarious Veronica, 726 



Trees or shrubs Olkaceae, 650 



N. Corolla irregular S. 

 S. Stamens with anthers 5. 



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



Convolvulaceae, 668 

 Solanaceae, 712 



Acanthaceae, 742 

 Verbenaceae, 688 



Lycopus, 709 



apex 

 Stamens inserted on the corolla. 

 Ovary deeply 4-lobed around the style 

 Ovary not deeply lobed, many-ovuled. 

 Filaments or some of them woolly 

 Filaments not woolly 

 S. Stamens with anthers 2 or 4. 



Ovules solitary in the 1-4 cells. 

 Ovary 4-lobed ; style rising from between the lobes 

 Ovary not lobed : style from its apex. 

 Ovary 1-celled ; fruit turned downwards 

 Ovary 2-4-celled ; fruit not turned downwards 

 Ovules 2-many in each cell. 



Rhododendron, 631 



Echium, 688 



Verbascum, 719 

 Hyoscyamus, 716 



Labiatae, 690 



Phrymaceae, 743 

 Verbenaceae, 688 



