416 PRIMULACEiE. [part h. 



and sometimes campanulate, with a spreading 

 five-cleft limb, as in Thmibergia. There are 

 only two stamens in Justicia and some of the 

 other genera, but in Thunbergia, Acanthus, 

 and Ruellia, there are four of unequal length, 

 inclosed wdthin the throat of the corolla. The 

 ovary is imbedded in the disk, and it is two 

 or many seeded ; the style is simple, and the 

 stigma one or two lobed. 



ORDER CXLYI.— OROBANCHE.E. 

 Leafless parasites, with brown or colourless 

 scaly stems and flowers. The genera are La- 

 thrsea and Orobanche. 



ORDER CXLYII.— LENTIBULARI^. 



Pretty little marsh plants, natives of Eu- 

 rope and North America. Pinguicula has very 

 much the appearance of a violet, and the Utri- 

 cularias are floating plants. 



ORDER CXLYIIL— PRIMULACE^, THE 

 PRLMROSE TRIBE. 



The plants belonging to this order are easily 

 known by the stamens, or rather anthers, for 



