1 86 Encyclopaedia of Gardening 



mass is wanted. See Botanical Magazine, t. 146. The shrubs are 

 propagated by cuttings in a frame, the herbs by division in spring. 

 Androsaemum is a good sub-shrub. Hookerianum is worth grow- 

 ing, and Moserianum is a fine hybrid. All those named are shrubs, 

 .and have yellow flowers in summer. 



Hyssop. See Kitchen Garden Herbs. 



Iberis, Candytuft (ibe-ris, from Iberia. Ord ; Cruciferae). Use- 

 ful hardy annuals and perennials. For the former, see Candytuft 

 and Annuals. The perennials are grown in the rock garden, and 

 soon cover a considerable area. They are not fastidious about soil, 

 and are easily increased by cuttings or seeds. The following are a 

 few of the best: corifolia, evergreen, 4 ins.; gibraltarica, not quite 

 hardy, i ft. (see Botanical Magazine, t. 124); sempervirens, ever- 

 green, i ft., and its variety Garrexiana, which has larger flowers. 

 They have white blossoms in early summer. Gibraltarica is pink. 



Ice Plant. See Mesembryanthemum. 



Ilex. See Holly. 



Imantophyllum. See Clivia and Bulbs. 



Imbricated. A flower is said to be imbricated when the petals 

 lap over each other. 



Impatiens, Balsam (impa-tiens, from impatiens, referring to the 

 quick discharge of the seeds. Ord. Geraniaceae) . One of the most 

 popular species of Impatiens is Sultani, a dwarf plant with brilliant 

 carmine flowers, easily raised from cuttings in a warm house, and 

 so floriferous that it is hardly rooted before it begins to bloom. It 

 thrives in loam, with a little leaf mould and sand. See Botanical 

 Magazine, t. 6643. Episcopi is a good variety of it. Hawkeri is 

 also a good hothouse species with scarlet flowers. The most popular 

 of the Impatiens is, however, the half-hardy annual Balsam. See 

 Balsam and Annuals. 



Impregnation. See Hybridisation. 



Incarvillea (incarvill-ea, after P. Incarville. Ord. Bignonia- 

 ceae). Beautiful hardy plants, of which the most popular species 

 are Delavayi and grandiflora. Both have large, deeply cut leaves 

 and bell-shaped carmine-rose flowers in summer. They are hardy 

 perennials, growing in most soils, and easily raised from seed under 

 glass in spring, or propagated by division. The height is about 

 1 8 ins. Grandiflora is considered by many to be merely a variety 

 of Delavayi. Olgae is a purple-flowered species growing somewhat 

 taller. 



Indian Corn. See Maize. 

 Indian Cress. See Nasturtium. 

 Indian Fig (Opuntia). See Cactus. 

 Indian Pink. See Dianthus and Biennials. 

 Indian Shot. See Canna. 

 India-rubber Plant. See Ficus. 



