AN ENCYCLOPZDIA OF HORTICULTURE. 
471 
DICTYOXIPHIUM (from dictyon, a net, and wiphos, 
a sword; having sword-shaped fronds, with netted veins). 
ORD. Filices. A monotypic genus, allied to Lindsaya. 
Sori marginal, continuous. For culture, see Ferns. 
D. panamense (Panaman). fronds tufted, sessile, 2ft. to 3ft. 
jong; barren pa дїп, y^ i fertile ones jin. to lin., broad, 
narrowed from the middle ually downwards, quite entire. 
soriin a continuous marginalline. Tropical America. 
DICYRTA (from dis, twice, and kyrtos, curved; the 
Didymocarpus—continued. 
ventricose throat. Leaves usually cordate, crenated, 
wrinkled, hairy. They succeed in a compost of peat, loam, 
and dried cow-dung, with the addition of a little sand. 
Propagated by cuttings, obtained from young shoots, 
when commencing growth; these should be placed in 
sandy soil, and in bottom heat. 
lower portion of the inside of the throat having two 
ORD. Gesneracew. A genus containing 
two species of dwarf herbs, natives of Central America. 
tubercular folds). 
D. crinita (hairy. /. white, tinged with purple ; tube incurved, 
swelling above; peduncles two to five toge her, axill 
flowered. July. i. alternate, іп, to 10in. long, spathulate, 
acute, serrated, pilose, red. Stem short, thick, croak. h. 1%. 
Pulo-Penang, 1845. (B. M. 4554.) 
FIG. 662. DIEFFENBACHIA MAGNIFICA (see page 474). 
Flowers white or pale lilae, often spotted, small Leaves 
opposite, membranaceous, villous. For culture, see Achi- 
candida tary, axillary; the small co 
ite). Л. white, solitary, y: к 
"m IM у curved tube, and an unequally five- 
lobed limb. July. i. opposite, on long petioles. A. lift. 1848. 
DIDISCUS. This genus is now ineluded by Bentham 
and Hooker under Trachymene (which see). 
DIDYMOCARPUS (from didymos, twin, and karpos, 
^ fruit; in reference to the twin capsules). ORD. 
Gesneracem. A genus of about forty species of stove 
Perennial, stemless or caulescent herbs, natives of tropical 
Asia. Flowers violaceous-blue or rarely yellow, disposed 
in dichotomous umbels; corolla funnel-shaped, with a 
| cases), 
D. Humboldtian- 1:umboldifik. Л. pale lilac; panicle rather 
loose, five or os Mikes October. A very neat and pretty 
little plant. (В. М. 4757.) а 
D. primulefolia (Primrose-leaved).* 
many-flowered, and, as well as the 
1. cordate-oval, petiolate, twice 
chlaina, a cloak; referring to the coverings of the spore- 
Including. Sphwrostephanos. Orv. Filices. A 
small genus of stove ferns, containing but the two species 
described below. Involuere elliptical, emarginate at the 
base, attached to the linear receptacle, free all round the 
edge. Sori elliptical, terminal on a veinlet, but distinctly 
intramarginal- For general culture, see Ferns. 
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