KEY TO THE FAMILIES. 33 



Fruit a berry or capsule ; calyx and corolla 4-5- 

 lobed ; stamens 4-5 ; ovary 2-celled or spuriously 

 4-celled, with several ovules on septal placentas ; 

 ' style 1 ; leaves alternate ; shrubs or herbs (Night- 

 shade, Tobacco, Boxthorn, Pituri) Solanaceae 99. 



E. Flowers irregular (almost regular in Myoporum, 

 Ruellia, and some Verbenaceae) ; style 1. 

 G. Ovary-cells with many or with 2 superposed ovules 

 calyx more or less deeply cleft into 5 lobes or sepals, 

 rarely fewer ; corolla more or less 2-lipped, 5- 

 lobed ; fruit usually a capsule. 

 H. Ovary 2-celled ; placentas septal ; herbs or 

 shrubs. 

 Cells many-ovuled, rarely 1-ovuled (calyx reduced 

 to 2 sepals in Dischisma) • stamens 2, or 4 in 

 pairs, rarely 5 ; seeds albuminous ; leaves 



alternate or opposite (Snapdragon Family) .... Scrophulariaceae 100. 

 Cells many-ovuled ; stamens 4 in pairs ; capsule 

 long, 2-valved ; leaves opposite, pinnate ; seeds 



without albumen (Tecoma) Bignoniaceae 101. 



Cells with 2 or more superposed ovules ; corolla 

 sometimes almost regular ; stamens 2, or 4 in 



pairs ; seeds without albumen ; leaves opposite Acanthaceae 105. 

 H. Ovary 2 -4-celled, with 1 -several pendulous ovules 

 in each cell ; corolla sometimes almost regular ; 

 stamens 4-5 ; fruit sometimes a drupe ; shrubs 



or trees (Eremophila) Myoporaceae 106. 



H, Ovary 1 -celled. 



Parasitic herbs with scale -like leaves ; calyx 

 apparently reduced to 2 or 4 segments or sepals ; 

 stamens 4 in pairs ; ovary with 4 protruding 

 parietal placentas bearing many ovules (Broom- 

 rape) Orobanchaceae 103. 



Aquatic herbs with radical leaves ; calyx 2-4-cleft ; 

 stamens 2 ; anthers 1 -celled ; ovary with 

 several ovules on a free central placenta (Bladder - 



wort) Lentibulariaceae 104. 



G. Ovary 4-celled, with only 1 ovule in each cell (1-celled 



with 4 ovules in Avicennia) ; leaves opposite or 



whorled. 



I. Style basal between the 4 cells of the ovary ; calyx 



5-toothed or 2-lipped ; stamens 2, or 4 in pairs ; 



fruit separating into 4 nutlets ; herbs or under- 



shrubs, with usually 4 -angled branches (Sage, 



Mint) Labiatae 98. 



I. Style terminal on the summit of the ovary. 



Calyx 4-5-toothed or 4-5-partite ; corolla 2- 



lipped or sometimes regular ; stamens 4-5 ; 



fruit a drupe, capsule, or separating into 4 



nuts ; herbs or shrubs (Verbena, Mangrove). . Verbenaceae 97. 



Calyx 5 -partite ; stamens 4 in pairs ; fruit a 



prickly nut (herb) Pedaliaceae 102. 



B. Order Plantaginales. Flowers regular ; sepals, corolla- 

 lobes and stamens 4 ; ovary 2-4-celled, with 1 -several 

 ovules in each cell ; style 1 ; capsule circumsciss ; 



herbs (ltibgrass) Plantaginaceae 107. 



A. Ovary inferior (except in Brunoniaceae) ; calyx and corolla 

 epigynous ; stamens epigynous or perigynous. 

 J. Stamens free. 



Order Bubiales. Ovary 1- several- celled, with 1-many 

 anatropous ovules in each cell. 

 K. Stamens equalling the corolla-lobes in number (except 

 in some Rubiaceae), inserted on the corolla-tube and 

 alternate with the lobes ; flowers regular. 

 Stipules present, sometimes resembling the true leaves ; 

 calyx 3-6-toothed or almost obsolete ; corolla 

 3-5-lobed ; ovary 1 -4-celled, with 1 or more ovules 

 in each cell ; style 1 ; nut, drupe, or capsule, the 

 capsules sometimes connate ; leaves opposite or 

 whorled ; herbs or shrubs Rubiaceae 108. 



