186 



POPULAR GARDEN BOTANY. 



MANDEVILLEA. 



Gen. Char. (Pentandria Monogynia) Calyx five-parted, not 

 falling- off; corolla monopetalous, regular, five-lobed, twisted 

 when in bud, and falling off ; stamens five, arising from the 

 corolla ; anthers adhering to the stigma. 



M. suaveolens, a South American plant, is a charming 

 climber for the greenhouse, as its growth is very rapid, and 

 it produces clusters of very sweet-scented white flowers 

 during the summer ; it was at first thought to require the 

 stove, but, though only introduced in 1839, it now bears the 

 cooler air : it should be grown in a mixture of peat and 

 loam, and allowed to rest during winter. 



GENTIAN A CEJE. 



Exogens, with the flowers terminal or axillary, generally re- 

 gular. Calyx divided, not falling off. Corolla monopetalous, 

 proceeding from below the ovary, not falling off; the limb re- 

 gular, sometimes furnished with delicate fringes ; lobes from 

 four to ten, occasionally extending at the base into a bag or 

 spur. Stamens on the corolla, equal to the segments. — Natives 

 of most parts of the world ; every part of these plants is bitter, 

 and used medicinally. 



