200 



POPULAR GARDEN BOTANY. 



eruhescens and geniculatus, from Australia; Bonariensis, 

 from Buenos Ayres; farinosus, from Madeira, and Italicus, 

 from Italy. Most of these plants are perennials, requiring 

 a rich but light soil ; the beauty of their flowers and their 

 twining habit make them particularly desirable in the 

 greenhouse for covering poles or trellis-work. 



P OLEMONIA CEJE. 



Exogens, with the calyx inferior, formed generally like a 

 prism, five-parted, not falling off, sometimes irregular. Corolla 

 regular or nearly so, five-lobed. Stamens five, inserted into the 

 middle of the tube of the corolla, and alternate with its seg- 

 ments. Ovary superior, three-celled. — Herbaceous plants, with 

 opposite or occasionally alternate, compound or simple leaves ; 

 stem occasionally climbing; abundant in America in the tem- 

 perate parts, less common in Europe and Asia, and possessing 

 slightly medicinal properties. 



CANTUA. 



Gen. Char. [Pentandria Monogynia.) Flower monopetalous, 

 funnel-shaped, inferior ; capsule three-celled, three-valved ; seeds 

 winged; stigma trifid. 



The Peruvian name for the genus. Yery pretty green- 



