16 ANALYTICAL KEY 



Style 1, often branched. 



Branches of the style (or at least the 



lobes of the stigma)' 3 98. POLEMONIACEAE, 394 

 Branches of the style or lobes of the 



stigma 2, or wholly united 103. SOLANACEAE, 433 

 Stamens fewer than the lobes of the corolla. 



Stamens with anthers 4, in pairs 101. VERBENACEAE, 424 



Stamens with anthers only 2, or rarely 3. 



Ovary 4-lobed, Lycopus in 102. LABIATAE, 426 



Ovary 2-celled, not 4-lobed. 



Stemless ; corolla scarious 108. PLANTAGINACEAE, 464 



Leafy-stemmed; corolla not scarious, Veronica in 



104. SCROPHULARIACEAE, 437 



Corolla irregular. 



Stamens with anthers 5, Verbascum in 104. SCROPHULARIACEAE, 437 



Stamens with anthers 2 or 4. 

 Ovules solitary in the 1-4 cells. 



Ovary 4-lobed; style rising from between the lobes 102. LABIATAE, 426 

 Ovary not lobed; style from its apex 101. VERBENACEAE, 424 



Ovules 2-many in each cell. 



Ovary imperfectly 4-5-celled 107. MARTYNIACEAE, 464 



Ovary 1 -2-celled. 



Parasites, without green foliage 106. OROBANCHACEAE, 463 



Not parasitic. 



Ovary 1-celled; stamens 2; aquatics 105. PINGUICULACEAE, 462 

 Ovary 2-celled; placentae in the axis, usually many- 

 seeded 104. SCROPHULARIACEAE, 437 

 Ovary adherent to the calyx-tube (inferior). 



Tendril-bearing herbs; anthers often united 112. CUCURBITACEAE, 472 



Not tendril-bearing. 

 Stamens separate. 



Stamens free from the corolla, or nearly so ; as many as its 



lobes 113. CAMPANULACEAE, 473 



Stamens inserted on the corolla. 



Stamens 1-3, always fewer than the corolla-lobes 



115. VALERIANACEAE, 475 

 Stamens 4-5; leaves opposite or whorled. 



Leaves opposite or perfoliate, but neither whorled nor 



provided with stipules 110. CAPRIFOLIACEAE, 468 



Leaves either opposite and stipulate, or whorled and 



without stipules 109. RUBIACEAE, 466 



Stamens united by their anthers; these joined in a ring or tube. 

 Flowers separate, not involucrate; corolla irregular 



114. LOBELIACEAE, 474 



Flowers in an involucrate head 116. COMPOSITAE, 476 



