76 Key to the System of 



Corolla constantly divided into two pairs of petals. 



Trees or erect shrubs ; leaves always simple ; flowers com- 

 paratively small ; petals contiguous before expansion ; 

 fruit lobeless, often succulent. Figure 100. 



Notelaea. 1575 



X.OGANXACEAE. 



376. Lobes of corolla constantly four. 



Always herbs, often small ; leaves usually tender ; corolla 

 whitish, rarely yellow ; styles two, nearly always connate 

 at the summit. Mitrasacme. 1576 



Lobes of corolla usually five. 



Mostly shrubs ; leaves usually firm; corolla whitish ; style 

 one. Figure 97. Logania. 1581 



FX.ANTAGXNEAX:. 



377. Flowers in elongated or abbreviated spikes. 



Usually herbs; leaves often lined by prominent longitudinal 

 venules ; flowers minute ; stamens and pistils generally 

 but variously developed in all the flowers. " Rib-herb." 

 Figure 98. PlantagO. 1584 



SOLANACEAE. 



378. Fruit succulent, indehiscent ... ... ... ... 379 



Fruit dry, longitudinally dehiscent ... ... ... 380 



379. Corolla with a wide tube. 



Herbs or shrubs or rarely small trees, very seldom climbers; 

 corolla-lobes folded inward before expansion ; stamens 

 five, equal. Figure 103. Solanum. 1586 



Corolla with a narrow tube. 



Shrubs or rarely small trees, not seldom spinescent; corolla- 

 lobes overlapping before expansion ; stamens four or five, 

 equal. Lycium. 1593 



380. Corolla with a narrow tube. 



Herbs or shrubs or rarely small trees; corolla-lobes folded 

 inward before expansion; stamens five, somewhat unequal. 



Nicotiana. 1594 



Corolla with a wide tube. 



Shrubs or rarely small trees; corolla-lobes folded inward 

 before expansion; stamens four, very unequal. 



Anthocercis. 1595 



