xc. scrophula^riace.t:. 279 



with or without a rudimentary 5th (staminode), less commonly 2 or 5 ; 

 anthers variously shaped, 1-2-celled, the cells distinct or more or less 

 confluent. Disk annular, cupular, or glandular. Ovary superior, 

 usually 2-celled ; ovules many, rarely few or only 2 in each cell, 

 anatropous or amphitropous ; style simple ; stigma capitate, or dilated, 

 or 2-lobed, or 2-lamellate. Fruit capsular (rarely baccate) ; placentas 

 on a free central axis or attached to the margins of the valves. Seeds 

 small, of various shapes ; hilum lateral or ventral ; albumen fleshy 

 (rarely 0) ; embryo straight or curved. — Distbib. Throughout the 

 world ; genera about 160 ; species about 2000. 



Leaves all alternate. 



Corolla-tube elongate. 



Stamens 2. Viscid herbs 1. Anticiiaris. 



Corolla sLibrotate. 



Stamens 4, didynaiuous 2. Celsia, 



Leaves the lower at least if not all opposite. 



Corolla spurred or subsaccate at the base in front; capsule 

 Oldening by pores. 



Corolla spurred ; anther-cells distinct 3. Linaria. 



Corolla subsaccate ; anther-cells confluent above 4. Schweinfurthia. 



Corolla not spurred nor subsaccate ; capsule dehiscing by 

 valves. 



Corolla with upper lip or 2 upper lobes outermost, 

 and lower lobes innermost in bud. 



Corolla elongate ; tube cylindric with more or less 

 expanded throat ; limb with subequal lubes or 

 2-lipped ; stamens 4 or 2. 



Stamens 4, inserted within the corolla-tube. 

 Corolla-lobes rounded, subequal. 



Anther-cells divaricate, confluent ; 



capsule septicidal 5. Sutera. 



Anther-cells contiguous though dis- 

 tinct, parallel ; capsule septicidal 



and loculicidal 6. Moniera. 



Corolla distinctly 2-lipped. 



Corolla with 2-gibbous throat ; an- 

 ther-cells confluent at the apex ... 7. MlMULl'8. 

 Corolla- throat not 2-gibbou8 ; an- 

 ther-cells distinct. 



Placentas either separating in 

 fruit or, if conjoined in a 

 column, the column not 



winged; seeds terete 8. Stkmodia. 



Placentas always conjoined in a 

 column which is winged by 

 the remains of the septa ; 

 seeds angular, usually trun- 

 cate 9. Llmnophila. 



Stamens 2 perfect, the lower pair reduced to 

 stamiuodes, all inserted in the corolla- 

 tube 10. DOPATRIUJI. 



Stamens if 4 the lower pair, if 2 the stami- 

 nodes inserted in the corolla-tliroat, the 

 upper or only perfect pair inserted in the 

 corolla-tube ; capsule septicidal. 

 Stamens 4 with perfect anthers. 

 Calyx-segments winged. 



Calyx 3-5-toothed or 2-lipped . IL Torenia. 

 Calyx-segments not winged. 



Long filaments with a broad 

 appendage at the base ; calyx 

 5-partite 12. Artanema, 



