ENCYCLOPEDIA OF GARDENING. 
America; spectablis (Syn. Dielytra spectabilis), the Chinaman’s Breeches, rosy 
crimson, spring and summer, 2 ft., Siberia and Japan. 
Dichzea.—Ord. Orchidacew. Stove epiphytal orchid. First in- 
troduced 1870. : 
CULTURE: Compost, fresh sphagnum moss. Position, blocks of 
wood suspended from roof of stove. Water daily. Temp., March to 
Aug. 65° to 85°; Aug. to March 50° to 60°. Propagate by division of 
plants in Feb. or March. 
SPECIES OULTIVATED: D. picta, green and purple, winter, Trinidad. 
Dichorisandra. — Ord. Commelinacez. Stove ornamental- 
leaved and flowering perennials. 
CULTURE: Compost, one-third each of peat, loam & leaf-mould & a 
little silver sand. Position, pots in shady part of stove. Pot in March. 
Water freely March to Oct., moderately afterwards. Syringe daily 
in spring and summer. Temp., March to Oct. 75° to 85°; Oct. to 
March 55° to 65°. Etopaeate by seeds in spring; division in March. 
SPECIES CULTIVATED: .D. mosaica, leaves green marked with white, 2 ft., 
Peru; pubescens teniensis, leaves striped with white, 2 ft., Brazil; thyrsiflora, 
blue, autumn, 5 to 10 ft., Brazil. 
Dicksonia (Tasmanian Tree Fern; New Zealand Tree Fern; Hay- 
scented Tree Fern).—Ord. Filices. Stove & greenhouse tree ferns. 
First introduced 1786. 
CULTURE: Compost, two-thirds peat & loam, & abundance of sand. 
Position, large pots or tubs weil drained in shady stove, greenhouse 
or conservatory. Repot, Feb., March. Water moderately Oct. to 
March, freely afterwards. Syringe trunks daily March to Sept. 
Temp., Sept. to March 55° to 65° for stove, 45° to 55° for greenhouse ; 
March to Sept, 65° to 75° for stove, 55° to 65° for greenhouse. Shade 
in summer essential. Propagate by i sown at any time on surface 
of finely sifted loam & peat in well-drained pots covered with a sheet 
of glass, & bel moist. 
STOVE SPECIES: D. Schiedei, 10 to 15 ft., Guatemala and Mexico; sellowiana, 
10 ft., Brazil; Lathami, 10 to 15 ft., hybrid. 
GREENHOUSE SPECIES: D. antarctica (Tasmanian Tree Fern), 18 to 20 ft., 
Tasmania; Culcita (Cushion Fern), dwarf, Madeira; squarrosa (New Zealand Tree 
Fern), 15 to 20 ft., New Zealand. 
Dictamnus (Burning Bush; Dittany; Fraxinella; Gas plant).— 
Ord. Rutacez. Hardy herbaceous perennial. First introduced 1596. 
Foliage, fragrant. 
CULTURE: Soil, erainary dryish. . Position, sunny or partially 
shady borders. Plant, Oct., Nov., March or April. Propagate by seeds 
sown 4 in. deep in light soil outdoors in Aug. or Sept. ; cuttings of fleshy 
roots inserted 2 in. ina outdoors in March or April; division of roots 
in Oct., Nov. or March. 
SPECIES OULTIVATED: D. albus (Syn D. Fraxinella), white, May, 3 ft:, 
Europe; albus purpureus, purplish, May, 8 ft. 
Dictyosperma. — Ord. Palmacesw. Stove Palms. Orn. 
foliage. First introduced 1842. Leaves, pinnate. 
CULTURE: Compost, equal parts loam, leaf-mould & sand. Posi- 
tion, pots in shady moist plant stove. Pot, Feb. or March. Water 
freely at all times. Temp., March to Sept. 70° to 85°; Sept. to March 
60° to 65°. Propagate by seeds sown lin. deep in pots of sandy peat 
in temp. 85° in Feb., March, or April. 
SPECIES OULTIVATED: D. album, 15 to 20 ft., Mauritius; 
Mauritius; fibrosum, 5 ft., Madagascar. mupettang: aaron, OEE 
Didymocarpus.—Ord. Gesneracer. Sto i " 
First introduced 1845, CR eauancrrs 
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