GARDEN FLOWERS. 137 



plenum, Hendersoni, elatum, varieties calestinum, grandiflorum, 

 bicolor plenum, azureum grandiflorum, bicolor and plenum. 



DESERT ROD. See EREMOSTACHYS. 



DENTARIA. [Cruciferae.] A family of hardy herbaceous 

 plants, comprising some dozen species, easily propagated by 

 seeds and division. They are of little horticultural impor- 

 tance. 



DEUTZIA. [Philadelphaceae.] Handsome hardy decid- 

 uous shrubs, very ornamental in both garden and shrubbery. 

 Propagated by suckers and layers. The smaller species, 

 especially D. gracilis, are valuable for forcing in the green- 

 house. 



D. corymbosa (corymbed) ; hardy shrub ; 5 feet ; flowers white, 

 in June ; Himalayas ; 1838. D. gracilis (graceful) ; hardy shrub ; 

 2 feet ; flowers white, in May ; Japan ; 1850. D. scabra (rough) ; 

 hardy shrub ; 5 feet ; flowers white, in June ; Japan ; 1833. D. 

 staminea (broad-stamened) ; hardy shrub ; 3 feet ; flowers white, 

 in June ; Himalayas ; 1831. The double-flowered species are 

 desirable. D. crenata flore-pleno is a fine species, introduced 

 from Japan in 1863 



DEVIL IN A BUSH. See NIGELLA. 



DIANTHOIDIS. See FENZLIA. 



DIANTHUS. Pink. [Caryophyllaceae.] The majority of 

 the Pinks are highly ornamental hardy perennials, particu- 

 larly suited for rock-work, and almost all the species are 

 alike desirable in such situations. All the hardy perennials 

 prefer a light, dryish soil, and are increased by cuttings or 

 pipings, and also by seeds, which should be sown as soon as 

 ripe. There are a few half-hardy, sub-shrubby kinds, which 

 may be kept in a dry frame or greenhouse, and should be 

 potted in sandy loam and peat : they propagate by cuttings. 

 The Indian pink ( D. Chinensis) is a richly colored hardy 

 biennial, and does well treated as an annual. 



