AN ENCYCLOPEDIA OF HORTICULTURE. 



471 



DICTYOXIFHITJM (from dictyon, a net, and wpho,, 

 a sword : baring sword-shaped fronds, with netted veins). 

 OBD. FtUees. A monotypic genus, allied to Lindsaya. 

 Son marginal, continuous. For culture, see Ferns. 

 D. panamenae (Panama), frmdt totted, sessile, 2ft. to 3ft. 



long; barren ones 2m. to Sin., fertile ones tin. to lin. broad. 



narrowed from the middle gradually downWardsT quite enUre! 



*on in a continuous marginallne. Tropical America? 



DICYB.TA (from dig, twice, and leyrto*, curred; the 



lower portion of the inside of the throat having two 



tubercular folds). OBD. G**nraesa. A genus containing 



two species of dwarf herbs, natives c Central America. 



Didjm 



ventncoee throat Leaves nsually eordate, created, 

 wrinkled, hairy. They succeed in a compost of peat lo 

 and dried oow-dung, with the addition of a 3? ,,. 

 Propagated by cuttings, obtained from young shoots 

 when commencing growth; these should be placed in 

 sandy soil, and in bottom heat 



FlG. 662. DlKFFENBACHU MAGMFICA (Me page 474). 



Flowers white or pale lilac, often spotted, small Leaves 



opposite, membranous, villous. For culture, M Aohi- 



menes. 



D. Candida (white), fl. white, solitary, axillary ; the small co- 

 rollas having a slightly curved . tube, and an unequally flve- 

 lobed limbTjulyTj. opposite, on long petioles. aTllft. 1848. 



DIDISCUS. This genus is now included by Bentham 

 and Hooker under Trachymene (which CM). 



DIDYMOCARFTJS (from didymot, twin, and Itarpot, 

 a fruit; in reference to the twin capsules). OBD. 

 GesneracstB. 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 



D. Hnmboldttana (HmnboldfsX JL pale lilae; panicle rather 



Oetober A TCTT * -* pretty 



petiolate, twice crenated, wrmkled and silky on 

 inju. Stem downy, bearing four crowded leae at top. 

 A. Sin. to 6in. Ceylon, iM (B. M? 5161.) 



DIDYMOCHLJENA (from didymot, twin, and 

 chlaina, a cloak ; referring to the coverings of the epore- 

 cases). Including Splwtrottephanot. ORD. Filicet. A 

 small genus of stove Ferns, containing but the two species 

 described below. Involucre elliptical, emarginate at the 

 base, attached to the linear receptacle, free all round the 

 edge. Son elliptical, terminal on a veinlet, but distinctly 

 intramarginal. For general culture, * Ferns. 



