52 



THE DICTIONARY OF GARDENING, 



Gardenia continued. 



be given. Some persons prefer planting out Gardenias 

 in a heated structure over hot- water pipes; but culti- 

 vating in large pots allows the advantage of being able 

 to shift them for destroying insects and for subjecting 

 them to lower temperatures in other houses. It is not 

 advisable to keep old plants; much better flowers, and 

 a greater quantity, may be obtained from young ones 

 grown rapidly by liberal treatment each, or, at least, 

 every second, year. Almost any amount of water may 

 be applied to the roots in summer, and syringing 

 morning and evening may be freely practised. 



Insects. Gardenias, if not well looked after, become 

 more infested with insects than is usual with even the 

 ordinary occupants of warm houses. Mealy Bug is most 

 destructive, collecting in quantities about the points, and 

 crippling the young flowers and leaves. Careful watching 

 for these, from the time cuttings are inserted, must be 

 constantly kept up, and measures taken to insure their 

 eradication if found. A wineglassfnl of petroleum to a 

 three-gallon can or open pail of tepid water, thoroughly 

 mixed, by having a syringe filled two or three times, 

 and its contents returned into the can, previous to 

 being applied, is one of the best insecticides. The 

 plants should be laid on their sides, if in pots, the 

 operation performed in dull weather, and the petroleum 

 thoroughly removed by clean water half an hour Liter. 

 This may be practised occasionally as a preventative. 

 Green Fly is readily destroyed by fumigation ; Red Spider 

 may be kept down considerably by syringing; and if 

 Scale should be troublesome, they must be removed by 

 sponging. All these infest Gardenias at some time, if 

 the least chance is given; consequently, a watch must 

 be kept, and measures applied, as preventatives to their 

 becoming established. 



G. amcena (pleasing), fl. white, having the lobes purple on the 

 outside in that part which is exposed to the air, while the 

 corolla is in aestivation, almost terminal, solitary, sessile ; tube 

 greenish, long, terete. June. I. oval, acute, glabrous, on short 

 petioles ; spines axillary, short, straight h. 3ft. to 5ft. China. 

 Stove. (B. M.1904.) 



G. florida (flowery).* Cape Jessamine. /. white, sweet-scented, 

 solitary, almost terminal, sessile, salver - shaped, nine -parted. 

 August. I. elliptic, acute at both ends. h. 2ft. to 6ft. China, 

 1754. Plant shrubby, unarmed, erect. Stove. (B. M. 3349.) Of 

 this species, there are several varieties, and that usually grown 

 as florida is but a double-flowered variety (B. M. 2627). 



G. f. Fortune! (Fortune's).* fl. white, large, pure, fragrant. 

 July. I. opposite, or in whorls, bright shining green. China. 

 Apparently a very large form of the typical species. (B. R. 32, 43.) 



G. f. variegata (variegated). This is much the same as the type, 

 but has leaves beautifully margined with yellowish-white. A 

 handsome form. 



Gardenia continued. 



G. nltida (shining).* fl. white, terminal, solitary ; calyx six-parted ; 

 corolla with a narrow tube and a seven-parted, reflexed limb. 

 October and November. I. opposite or tern, oblong-lanceolate, 

 undulated, h. 3ft Sierra Leone, 1844. Stove. (B. M. 4343.) 



G. radicans (rooting), fl. white, solitary, almost terminal, and 

 nearly sessile, salver-shaped, very fragrant. June. I. lanceolate. 

 Stems radicant. h. 1ft. to 2ft. Japan, 1804. Plant shrubby, un- 

 armed. Greenhouse. (B. M. 1842.) 



G. r. major (larger).* This is one of the most profuse flowering 

 forms ; it is larger in all its parts than the type, but smaller than 

 G. florida. 



G. r. variegata (variegated). I. margined with white. Japan. 

 An interesting and elegant form. See Fig. 81. 



G. Rotnmannla (Rothmann's). fl. yellow, purple; sepals sub- 

 ulate, rounded ; tube smooth, dilated, short. July. J. oblong ; 

 stipules subulate, h. 10ft Cape of Good Hope, 1774. Green- 

 house. (B. M. 690.) 



G. Stanleyana. See Randia maculata. 



FIG. 81. SHOOT OF GARDENIA RADICANS VARIEGATA, 



FIG. 82. GARDENIA THUXBERGIA, showing Habit and detached 

 Single Flower. 



G. Tnunbergia (Thunbergia).* fl, white, large, fragrant, terminal, 

 solitary, sessile, eight-parted. January to March. I elliptic, 

 acute, glabrous, opposite, or three or four in a whorl, h. 4ft to 

 5ft Central and Southern Africa, 1774. Plant shrubby, unarmed. 

 Greenhouse. See Fig. 82. (B. M. 1004.) 



GARDEN FINE. See Dianthus plumarius. 

 GARDOQUIA (named in honour of Don Diego Gar- 

 doqui, a Spanish financier of the eighteenth century, 

 who promoted the publication of a Flora of Peru). STN. 

 Rizoa. ORD. Labiatce. A genus comprising about 

 twenty-six species of greenhouse or half-hardy sub- 

 shrubby evergreens, natives, for the most part, of Chili 

 and Peru. Calyx tubular, thir- 

 teen-nerved ; corolla with a long, 

 almost straight tube, its upper 

 lip notched, the lower in three 

 lobes, the middle one of which 

 is broadest. Leaves small, nu- 

 merous, entire, rarely largely 

 dentate. Gardoqnias thrive in a 

 compost of loam, peat, and sand. 

 Propagation is effected by cut- 

 tings, made of half - ripened 

 shoots, and inserted in sand, 

 under a bell glass. When rooted, 

 the young plants should be 

 potted off in small pots, and 

 grown near the glass, in a 

 greenhouse, and, as they ad- 

 vance in size, shifted into larger- 

 sized pots. 



G. betonicoides (Betony-like) is 

 Ccdronella mcxicana (which 

 see). See Fig. 83. (B. M. 3860.) 

 G. breviflora (short-flowered), fl. 

 secund, in whorls; calyx a little 

 coloured, with lanceolate - acute 



