ENCYCLOPADIA OF GARDENING. 
cuttings of side shoots inserted, in Oct. or Nov., in well-drained pots 
or pans of sandy peat under bell-glass in temp. 50° to 55°; layers in 
March or April; grafting on D. laureola & D. pontica in spring. 
CULTURE OF HARDY SPECIES: Soil, sandy peat. Position, 
drooping over front of rockeries for trailing species; summit of rockery 
or open border for erect species. Plant, Oct., Nov., March, or April. 
Increased by layering shoots in autumn, 
GREENHOUSE SPECIES: D. odora, purple, March, 2 to 3 ft., Japan. 
HARDY SPECIES: D. alpina, white, May, 2 ft., 8. Europe; blagyana, white, 
April, 10 in., Carniola; cneorum (Garland Flower), pink, April, 1 ft., 8. Europe; 
mezereum (Mezereon), red or white, Feb., 3 ft., Europe (Britain); Laureola 
eas ate, yellow, Jan., 3 ft., Europe (Britain); pontica, yellow, April, 
Darling River Pea (Swainsoniana coronilliflora).—See Swain- 
soniana, 
Darling tonia (Californian Pitcher-plant).—Ord. Sarraceneacezx. 
Hardy herbaceous orn. foliage plant. nsectivorous. _ First intro- 
duced 1861. Pitchers, borne on summit of leaves, hood-like, bright 
green, mottled with white & pink. 
GREENHOUSE CULTURE: Compost, equal parts peat, chopped 
sphagnum, sharp sand, & small pieces of limestone. Position, under 
hand-light in shady greenhouse. Pot, Feb. or March. Water freely at 
all times. Syringe daily March to Sept. Ventilate hand-light daily. 
OUTDOOR CULTURE: Compost, spongy fibrous peat & chopped 
sphagnum moss. Position, damp, by side oh stream, or in bog exposed 
to sun, but sheltered from cold winds. Plant, March or April. Pro- 
pagate by seeds sown on surface of mixture of fibrous peat, charcoal, 
sphagnum & sand in a pan stood partly in water & covered with a 
bell-glass in cool greenhouse in April or May; division of side shoots 
inserted in small pots at any time of year. 
SPECIES CULTIVATED: D. californica, white, April, 12 in., California. 
Darwinia. — Ord. Myrtacew. Greenhouse evergreen shrubs. 
First introduced 1820. 
CULTURE: Compost, equal pants loam, peat, & sand. Position, 
well-drained pots in airy greenhouse. Pot firmly in Feb. or March. 
Water moderately Sept. to March, freely March to Sept. Prune, Feb. 
or March. Temp., Sept. to March 40° to 50°; March to Sept. 50° to 
60°. Propagate by cuttings of young shoots 2 or 3in. long, inserted 
in sardy peat under bere in temp. 40° to 50° in April or May. 
SPECIES CULTIVATED: D. fimbriata, rose, June, 5 ft., Australia; macros- 
tegia (Syn. Genetyllis tulipifera), crimson, May, 3 ft., Australia. 
Darwin’s Barberry (Berberis Darwinii).—See Berberis. 
Dasylirion. — Ord. Liliacew. Greenhouse evergreen plants. 
Orn. foliage. First introduced 1835. Leaves, glaucous green, with 
spiny margins. 
CULTURE: Compost, two parts loam & peat, one sand. Position, 
pots or tubs in airy greenhouse, dwelling-rooms, or outdoors in beds 
May to Sept. Pot firmly Feb. or March. Water very little Oct. to 
March, freely afterwards. Temp., Sept. to March 40° to 50°; March 
to Sept. 50° to 60°. Propagate by seeds sown in sandy peat in well” 
drained pans or pots under bell-glass in temp. 50° to 60° in March, 
April, or Mays 
SPECIES OULTIVATED: D. acrotrichum, 6 to 8 ft., Mexico; glaucophyllum, 
10 ft., Mexico; Hookeri, 3 ft., Mexico. 
Date Palm (Phoenix dactylifera)—See Phoenix. 
Date-Plum (Diospyros virginica).—See Diospyros. 
130 
