lii FLORA OF MADRAS. 



Leaves alternate ; if opposite or subopposite, 

 then ovary 4-celled ; if leaves 0, then parasitic 

 herbs with watery sap and free stamens ; carpels 

 never free ; if aquatic herbs, then ovary 

 2-celled: 



Ovary-cells many-ovuled : 



Corolla-lobes imbricate ; styles 2 ; small 



herbs GUI. HYDROLEACEAE. 



Corolla-lobes plicate ; style single ; herbs 



or shrubs, rarely trees 



CVI. SOLANACEAE. 



Ovary-cells 2-, seldom 1-, rarely 4-ovuled : 

 Corolla-lobes imbricate or contorted ; ovary 

 2-celled, cells 2-ovuled or spuriously 4-celled 

 and cells 1-ovuled; fruit of two 1-2-seeded 

 pyrenes or of four 1 -seeded nutlets ; embryo 

 with superior radicle ; herbs, shrubs or trees 



CIV. BORAGINACEAE. 



Corolla-lobes plicate ; if imbricate, then 

 fruit a valvular capsule or leafless parasitic 

 plants ; ovary 2-, rarely 3-5-celled ; fruit 

 usually dehiscent, or if indehiscent, then 

 embryo with inferior radicle ; usually 



climbing plants CV. CONVOLVULACEAE. 



Corolla irregular or at least distinctly oblique, lobes 

 overlapping ; uppermost stamen smaller than the 

 rest or reduced to a staminode or absent ; or if 

 corolla regular and cells of ovary 1-2-ovuled, then 

 embryo with inferior radicle : 



Carpels 2- or more, usually many-ovuled ; or if 

 only 2-ovuled, then ovules superposed, or if 

 collateral, then fruit a 2-valved capsule opening 

 elastically from the apex : 



Ovary 1 -celled with parietal placentas ; or if 

 2-celled by the intrusion of the placentas only 

 imperfectly so ; ovules many : 



Leafless herbs parasitic on roots ; seeds very 

 small ; embryo very minute 



CVIII. OROBANCHACEAE. 

 Leafy green herbs or undershrubs, sometimes 

 epiphytic ; ovary often inferior ; leaves 

 usually opposite CX. GESNEBIACEAE. 



