130 KEY TO PLANTS. 
(6) Ovary 1, entire or lobed. Style 1, entire 
or cleft at the top. 70. 
70 (a2) Corolla valvate or plaited in aestivation. 
Stamens inserted on the corolla. Sepals 
more or less united. Leaves alternate. 
Style undivided. Embryo curved. 
Solanaceae. 
(4) Corolla imbricate or contorted in aestiva- 
tion, rarely valvate, but then stamens 
free from the corolla and sepals distinct. 
Vie 
71 (a) Ovary 8-celled. Stamens inserted on the 
corolla. Anthers dehiscing by 2 longitu- 
dinal slits. Mostly herbs. 72. 
(6) Ovary 4-20-celled, very rarely 3-celled, 
but then stamens free from the corolla. 
Anthers dehiscing by 2 apical pores or 1 
longitudinal slit (very rarely 2 slits). 
Shrubs or trees, 73. 
72 (az) Corolla-lobes contorted in  aestivation. 
Filaments thread-like. Stigmas 3, nar- 
row. Radicle of the embryo short. 
Sepals united more or less, usually to 
the middle or beyond. Disc usually 
present. Europe, Asia, America. 
Polemoniaceae. 
(6) Corolla-lobes imbricate in aestivation. 
