190 



Fam. 19. Nyctaginaceae. 

 (Plate 4 -, D.) 



Herbs, shrubs or trees. Flowers often mvoluered, 

 bisexual or polygamo-dioecious, regular; perianth simple, 

 often corolloid, tubular, the lower part persistent. Stamens 

 1- 5 (S. A.), filaments combined at their base into a 

 hypogynous ring. Ovary superior, free, i-celled; ovule 

 1, ereet. Fruit enclosed within the hardened base of the 

 perianth-tube. Embryo mostly with expanded cotyledons, 

 which surround the perisperm. Flor. Cap. Vol. \, Sect. 1, -?<>-• 



\ * 



Fig. 85. Boerlmavia pentandra Burch. Rootstock 

 (incomplete), with young shoots (November). 

 1 4 nat. size. 



Fig. 86. Boerhaavia pentandra Burch. 



1. Flower in long, section. 3 1. 



2. Lower part of perianth. 5/1. 



3. Fruit. 4. Fruiting calyx in 

 long, section, the real fruit within. 

 s. The embryo. 5. Seed. 4/1. 

 6. Embryo. 



