HERBACEOUS PLANTS 131 



be well suited for planting where smoke 

 abounds, which may also be said of the LYME 

 GRASS (Elymus glaucifolius) with its glaucous 

 blue foliage and feathery habit of growth. 

 EUPHORBIA CYPARISSIAS has few equals as a 

 town plant and has been for many years 

 established in a London garden. It flowers 

 freely and is a plant of striking appearance. 

 One or two species of FUNKIA do well in smoky 

 localities, the best being F. Sieboldii and the 

 variegated-leaved varieties. Several species of 

 SUNFLOWER (Helianthus) can be recommended 

 for planting where the atmosphere is not too 

 impure, notably H. laetiflorus, H. multiflorus, 

 H. giganteus, and H. rigidus. Hemerocallis 

 flava and H. fulva are both excellent town 

 plants and are showy both in leaf and flower. 

 They want fairly rich soil and can suc- 

 ceed in partial shade. The Cow PARSNIP 

 (Heracleum giganteum), with its noble stem, 

 finely cut leaves, and dense heads of creamy 

 white flowers, has few equals for planting in 

 smoky localities. Most species of IRIS are 

 excellent town plants and succeed in very poor 



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