ENOYCLOPHDIA OF GARDENING. 
SPECIES CULTIVATED: D. vulgari Z 
july, 3 ft, 8 Eurery vulgaris (Syn. Arum dracunculus), chocolate-brown, 
Dragon Arum.—See Dracunculus. 
Dragon Tree (Draceena draco).—See Dracena. 
aie s-head (Dracocephalum grandiflorum).—See Dracoce- 
Dragon’s-mouth.—See Helicodiceros. 
Dragon’s-mouth Orchid.—See Epidendrum. 
Dropwort (Spirza filipendula).—See Spirza. 
Drosera (Sundew; Youth-wort).—Ord. Droseracez. Greenhouse 
and hardy perennial insectivorous plants. 
CULTURE: Compost, equal parts living sphagnum moss, peat, pot- 
sherds. Position, well-drained pots partly immersed in pan of water 
& covered with bell-glass in cool reenhouse. Water daily. Propa- 
gate by seeds sown on surface of living sphagnum moss and peat in 
well-drained pots under bell-glass in temp. 55° to 65° at any time; 
division of the crowns in March or April; cuttings of roots 4 to lin. 
one embedded in pan of moss & peat under bell-glass in temp. 65° 
0 75°. 
SPECIES CULTIVATED: D. intermedia, white and red, July, 3 in., Europe; 
longifolia (Syn. D. anglica), white, July, 3 in., Europe (Britain); rotundifolia, 
white, July, 4 in., Europe (Britain). 
Drosophyllum (Portuguese Sundew). — Ord. Droseracex. 
Greenhouse shrubby insectivorous plants. First introduced 1869. 
CULTURE: Soil, light sandy loam. Position, well-drained pots 
close to glass in light, airy greenhouse. Water once or twice Sept. to 
April, very little afterwards. Temp., Sept. to March 40° to 50°; March 
to Sept. 50° to 60°. Propagate by seeds sown on the surface of sandy 
loam in well-drained pots in spring. 
SPECIES CULTIVATED: D. lusitanicum, yellow, May, 1 ft., Portugal. 
Drumhead Cabbage.—See Brassica. 
Drummond’s Side-saddle-flower (Sarracenia Drum- 
mondi).—See Sarracenia. 
Dryas (Mountain Avens)—Ord. Rosacew. Hardy evergreen trail- 
ing plants. 
CULTURE: So'l, moist peat. Position, sunny rockery or borders. 
Plant, Oct., Nov. or March. Propagate by seeds sown 1-16 in. deep 
in sandy peat in shallow pans or boxes in cold frame April or May; 
cuttings of shoots 2in. long inserted in sandy soil in cold frame in 
autumn; division of plants in Oct., Nov. or March. 
SPECIES CULTIVATED: D. Drummondii, yellow, June, 3 in., N. America; 
octopetala, white, June, 3 in., trailing, Purope. nae 
Drymogiossum (ios Tongue Fern).—Ord, Filices. Stove 
evergreen creeping fern. First introduced 1828. 
CULTURE: Compost, equal parts loam, peat, leaf-mould, pounded 
charcoal & sand. Pot or plant, Feb., March, or April. Position, well- 
drained shallow pans or beds in Wardian case. Water moderately Oct. 
to Feb., freely afterwards. Temp., Sept. to March 55° to 60°; March 
to Sept. 65° to 75°. Propagate by spores sown on surface of sandy 
pest in temp. 65° to 75° at any time; division of rhizomes in Feb, or 
an CULTIVATED: D. carnosum, Himalayas; filoselloides, India. 
Drynaria.—See Polypodium. 
Drypis.—Ord. Caryophyllaces. Hardy herbaceous perennial. 
First introduced 1775. anf . 
CULTURE: Soil, ordinary. Position, sunny rockeries or borders. 
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