100 



THE FLOWER GROWER'S GUIDE. 



July. D. arenarius (sand-loving), Northern 

 Europe ; height 6 inches ; dense ; flowers white : 

 May and June ; position dry and sunnj\ D. har- 

 l)atus (bearded), common Sweet William, Southern 

 Europe; heights and colours various: summer. 

 D. csesius (Cheddar pink) ; bluish grey, Britain ; 

 height 3 to 6 inches ; flowers delicate rose : May 

 and June. D. cruentus (bloody). Eastern 

 Europe; height 18 inches to 2 feet; flowers 

 blood red: summer. D. deltoides (deltoid), 

 maiden pink, Britain ; height 6 to inches ; 

 flowers rose: summer. D. dentatus (toothed). 

 Southern Eussia ; height 6 inches ; flowers violet 

 lilac : summer. D. Fischeri (Fischer's), Eussia ; 

 height 3 to 4 inches ; flowers rose : summer. 

 D. glacialis, 4 inches ; red : June (Fig. 52). 

 D. neglectus (neglected). South of Europe; height 

 2 to 4 inches ; flowers deep rose : summer. D. 

 petneus (rock), rock pink. Eastern Europe ; height 

 6 inches ; flowers rose : summer. D. plumarius 

 (feathered), garden pink. Eastern Europe ; height 

 9 to 12 inches; flowers white: summer; garden 

 varieties also good for rockwork. D. superbus 

 (superb), Europe and Asia; height 9 to 18 inches; 

 flowers rose : summer. All can be grown in 

 ordinary garden soil. Division, layering, cuttings, 

 and seed. 



DiCENTRA, or DiELYTRA (Lyre Flower). — D. eximia 

 (choice). United States ; height 9 to 15 inches ; 

 flowers reddish purple : summer. D. spectabilis 

 (showy), Japan; height 12 to 24 inches; flowers 

 rosy crimson: spring and early summer; mode- 

 rately rich soil ; division of roots. 



DiOTis (Cotton weed). — D. maritima (sea), South of 

 England and shores of Mediterranean ; leaves 

 woolly ; height 6 to 12 inches ; flowers yellow ; 

 fronts of rockery ; cuttings or seed. 



DoDECATHEON (Cowslip). — D. meadia, North America ; 

 height 10 to 1(5 inches ; flowers white, rosy purplt-, 

 or lilac, with yellow anthers : April. D. m. ele- 

 gans (elegant), D. ni. frigidum (cold), D. m. 

 giganteum (gigantic), D. m. lancilolium (lance- 

 leaved), synonym D. Jefl'reyi (Jeffreys), are all 

 good varieties. Positions moist and sheltered ; 

 sandy peat, or leaf soil and loam. Division of the 

 crowns in spring or autumn. 



Draba (Whitlow Grass). — D. aizoides (Aizoon-like), 

 Europe ; height 3 inches ; flowers yellow : March. 

 D. aizoon (Aizoon), mountains of Western Europe ; 

 height 5 inches; flowers bright yellow: April. 

 D. cinerara (grey), Siberia ; height 3 to 6 inches ; 

 flowers white : early spring. D. cuspidata (cuspi- 

 date), Spain ; height 3 inches ; flowers yellow : 



spring. D. Mawi (Maw's), Spain; height 3 

 inches ; densely tufted ; flowers white : spring. 



D. tridentata (three-toothed), Caucasus ; height 

 3 inches ; flowers yellow : August. Positions 

 sunny, clear of other strong-growing plants ; 

 common garden soil, with limestone chips inter- 

 mingled ; division. 



Dryas (Mountain Avens). — D. octopetala (eight- 

 petaled), Britain ; creeping, evergreen ; flowers 

 white : June ; moist peat soil ; division, cuttings, 

 or seed. 



Erigeron (Flea-Bane). — E. Eoylei (Royle's), Hima- 

 layas ; height 4 to 8 inches ; flowers bluish 

 purple : summer. E. speciosus (showy), also 

 known as Stenactis speciosa, Western North 

 America ; height 18 inches ; flowers violet and 

 yellow : summer and autumn ; positions moist 

 and well-drained ; common soil ; division. 



Erinus alfinus (alpine), mountains of Western 

 Europe ; height 5 to 6 inches ; tufted growth ; 

 flowers violet purple and pure white, profuse : 

 March to June; fronts of rockwork, any soil; 

 division. 



Erodium (Heron's Bill). — E. macradenium (large 

 glanded), Pyrenees ; height 6 inches ; flowers pale 

 violet : June and July. E. Manescavi (Manes- 

 caut's), Pyrenees ; height 15 to 24 inches ; flowers 

 purplish red : summer. E. Eeichardi (Reichard's), 

 Majorca ; height 2 to 3 inches ; flowers white : 

 April to September ; positions dry ; soil, sandy 

 peat ; division and seed. 



Erythronium (Dog's-tooth Violet). — E. americanum 

 (American), North America ; height 3 to 6 inches ; 

 flowers bright yellow : March and April. E. 

 dens-canis (Dog's tooth), Europe; height 6 

 inches ; flowers purplish rose or whitish : spring. 



E. grandiflorum (large-flowered), North-west 

 America ; height 3 to 6 inches ; flowers yellow or 

 cream : March and April. E. g. giganteum 

 (gigantic), Washington territory ; fluwers white : 

 spring ; positions, sheltered fronts ; peaty soil ; 

 increased by offsets after the leaves die away. 



Gentiaxa (Gentian). — G. acaulis (stemless), Alps and 

 Pyrenees ; height 2 to 4 inches ; flowers blue, 

 with yellow marking: March to May; position, 

 low ; soil, strong, loamy ; division and seed 

 (see coloured plate). G. Andre wsi (Andrew's), 

 North America ; height 12 to 24 inches ; flowers 

 blue : August ; position moist ; soil loamy. G. 

 bavarica (Bavarian), Central Europe ; height 3 

 inches ; flowers deep blue : July ; position sunny ; 

 soil boggy, or a mixture of peat, sphagnum, 

 moss, and broken limestone ; division and seed. 



