ENCYCLOPEDIA OF GARDENING. 
SPECIES CULTIVATED: D. excelsa, scarlet, summer, 8 to 12 ft., N.S. Wales; 
Seen summer, 12 to 15 ft., Queensland; Palmeri, red, summer, 12 ft.,, 
Double Arrow-head (Sagittaria sagittefolia fi-pl.). — See 
Sagittaria. . 
ieee Bindweed (Calystegia pubescens fi.-pl.).—See Caly- 
stegia. 
Double Cherry (Prunus Cerasus Rhexii fl.-pl.).—See Prunus. 
Double Chinese Cherry (Prunus japonica fl.-pl.). — See: 
prunus. 
Double Chinese Plum (Prunus sinensis fl.-pl.).—See Prunus.. 
Double Dropwort (Spirza filipendula land Bee Spirea. 
Double Furze (Ulex ee enus).—See Ulex. 
Double Horse Chestnut (Zsculus hippocastanum f.-pl.).— 
See Aisculus. 
Double Jasminum (Jasminum officinale fl.-pl.)—See Jas~ 
minum. 
Pe ada Marsh Marigold (Caltha palustris f.-pl.).—See: 
altha, 
Double Mayweed (Matricaria inodora fi.-pl.).—See Matri-. 
caria. 
Wonee Myrtle (Myrtus communis var. belgica fl.-pl.).—See: 
rtus. 
ouble Peach (Prunus Persica flore-pleno).—See Prunus. 
Double Persian Ranunculus (Ranunculus asiaticus: 
fl.-pl.).—See Ranunculus. 
ouble Red Campicen (Lychnis dioica fl.-pl.).—See Lychuis.. 
Double Red Daisy (Bellis perennis rubra plena).—See Bellis.. 
Double Rocket (Barbarea vulgaris).—See Barbarea. 
Double Rose Campion (Lychnis coronaria f.-pl.). — See: 
Lychuis. 
Double Scarlet Avens (Geum coccineum fi.-pl.).—See Geum.. 
oe Seaside Catchfiy (Silene maritima fi.-pl.).—See: 
ene. 
Double Siberian Larkspur (Delphinium grandiflorum 
fi.-pl.).—See Delphinium. 
ouglasia. — Ord. Primulacewx. Hardy evergreen alpine 
plants. First introduced 1827. 
CULTURE: Compost, equal parts peat & loam. Position, sunny 
rockery. Plant, Oct., Nov., March or April. Propagate by seeds sown 
1-16 in. deep in sandy peat in cold frame, or under hand-light in March 
or April; division of vants in autumn. 
SPECIES CULTIVATED: D, levigata, rosy pink, March to Sept., 1 in., Oregon 
Mountains; nivalis, pink, April, 1 in., Rocky Mountains; vitaliana (Syn. Androsace 
vitaliana), yellow, May to July, 2 in., Alps. 
co Yew Tree (Taxus baccata var. Dovastoni).—See 
axus. 
Dovedale Moss (Saxifraga hypnoides).—See Saxifraga. 
Dove Orchid (Peristeria elata).—See Peristeria. 
Dove’s-foot Geranium (Geranium molle)—See Geranium. 
Downingia.—Ord. Campanulacew. Hardy annuals. First in- 
troduced 1827. 
CULTURE: Soil, ordinary rich. Position, sunny beds or borders. 
Sow seeds where plants are to flower in April. Thin seedlings to Gin. 
apart in May or June. 
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