146 GARDEN FLOWERS. 



be required. If good plants are required, strong young 

 plants should be prepared through one summer for bloom- 

 ing the following spring. Smaller plants, to bloom the same 

 year, may be raised in spring. 



D. ghitinosus (clammy) ; greenhouse sub-evergreen shrub ; 4 

 feet ; flowers orange-yellow, in summer ; California ; 1 794. D. 

 puniceiis (scarlet) ; greenhouse sub-evergreen shrub ; 4 feet ; 

 flowers deep crimson, in summer ; California ; 1837. 



DiPLOPAPPUs. [Compositse.] Hardy or half-hardy per- 

 ennials, some of them sub-shrubby, related to Aster. Com- 

 mon loamy soil. Increased by cuttings or by division. 



DiRCA. [Thymelaceas.] A hardy deciduous shrub, com- 

 monly called Leatherwood, valuable for its early blooming. 

 Common damp soil. Increased by layers. 



D. pahistris (marsh) ; hardy shrub ; 5 feet ; flowers yellow, in 

 early spring ; North America ; 1750. 



DisPORUM. [Liliaceae.] Half-hardy perennial, requir- 

 ing winter protection. Soil, sandy peat. Propagated by 

 division and seed. 



D.fulvum (tawny) ; half-hardy perennial ; 18 inches ; flowers 

 brown, in autumn; China; 1801. D. parvijloriun (small-flow- 

 ered) ; half-hardy perennial ; 3 feet ; flowers yellow, in July ; 

 Nepaul; 1820. 



Dittany. See Origanum. 



DoDECATHEON. A77iericafi Cowslip, [Primulaceae.] Very 

 pretty, early flowering, dwarf, perennial, herbaceous plants, 

 quite hardy ; preferring to be planted in a soil where there 

 is a good proportion of loam and peat earth, and requiring 

 a cool situation. The flowers are in shape like a half- 

 opened inverted parasol. They are increased without diffi- 

 cult)' by dividing the roots. Seeds are also produced, from 

 which young plants may be raised by the same process as 

 in raising seedlings of the Auricula, except that, when large 



