TRI 



604 



TRO 



TRICHOSANTHES anguina. Snake 

 Gourd. Frame trailing annual. Seeds. 

 Common soil. 



TRICHOSTEMA. Two species. 

 Hardy annuals. Seeds. Common soil. 



TRICORYNE. Three species. 

 Greenhouse herbaceous perennials, ex- 

 cept T. simplex, a green-house biennial 

 increased by seeds, the other two by 

 division ; a light rich soil suits them all. 



TRIDENTIA. Seven species. Stove 

 evergreen shrubs. Cuttings. Sandy 

 loam and brick rubbish. 



TRIENTALIS. Two species. Hardy 

 herbaceous perennials. Division or 

 seeds. Light rich soil. 



sited in a cabbage or cauliflower, the 

 young larva immediately eats its way to 

 the centre, on which it feeds till it is 



; full grown, when it is about two inches 

 long, greenish or brownish green in 



\ colour, with two rows of black spots 

 on the back. During the winter, it lies 

 beneath stones or clods of earth, and in 

 April or May it descends a few inches 

 below the surface, where it changes to 

 a reddish pupa, from which the perfect 

 moth emerges in June or July. The 



i moth varies in size from two to two and 

 a half inches: the upper wings are 

 brownish or grayish, with an indistinct 

 kidney-shaped spot near the centre ; 



TRIFOLIUM. Trefoil or Clover. ' the lower wings are bright yellow, with 

 One hundred and two species. All a narrow black band. The moth varies 

 hardy, chiefly annuals, some herba- considerably in its colour and markings, 

 ceous perennials, and a few deciduous, scarcely two individuals ever being ex- 



Di- ! actly alike. The caterpillar, though it 

 most frequently is found on the cabbage 

 or cauliflower, yet sometimes does con- 

 Stove orchids. Division. Fibrous peat. ' siderable mischief to celery, and even 

 r ,^,T^„ . , . „ , ^^^ young leaves and flower-buds of 



auriculas, primroses, and violets are 



herbaceous, and annual trailers 

 vision or seeds. Common soi 



TRIGONIDIUM. Four species 



TRIGUERA ambrosiaca. Hardy an 

 nual. Seeds. Common soil. 



TRILLIUM. Fifteen species. Hardy I destroyed by it. The only remedy we 

 tuberous-rooted perennials. Division ; can suggest is to search for and destroy 



I them.'* — Gard. Chron. 



TRIPHASIA trifoliata. Green-house 



or seeds. Peaty soil. 



M. F. Otto observes, that — " Seven 

 species are cultivated in our gardens, | evergreen shrub. Ripe cuttings. Turfy 

 namely: Trillium sessile; T. erythro- ' \oa.m and peat. 



carpum; T.pusilium; T. cernuum ; T.\ TRIPTILION. Two species. Hardy 

 erectum; T. pendulum ; a.nd T. grand i- annua.\s. Seeds. Common soil. 

 fiorum. Their cultivation is very sim- | TRISTANIA. Eight species. Green- 

 pie. They grow freely in the open air ! house evergreen trees and shrubs. Half 

 without covering, in shady places, and ripe cuttings. Loam, peat, and sand, 

 in a mixture composed of marsh or \ TRITELEIA. Three species. Halt- 

 heath soil, mixed with river sand. They ! hardy bulbous perennials. Offsets or 



' " seeds. Peat, loam, and sand. 



TRITOMA. Four species. Hardy 

 or half-hardy herbaceous perennials. 

 Suckers. Light rich soil. 



TROCHETIA grandiflora. Stove 

 evergreen shrub. Cuttings. Rich light 

 loam. 



TROCHOCARPA laurina. Green- 

 house evergreen shrub. Cuttings. Sandy 

 peat and turfy soil. 



TROLLIUS. Globe Flower. Seven 

 species. Hardy herbaceous perennials. 

 Division or seeds. Light moist soil. 



TROMOTRICHE. Five species. 

 Stove evergreen shrubs. Cuttings. 

 Sandy loam and brick rubbish. 



TROP.EOLUM. Nasturtium. Four- 

 teen species. Green-house hardy and 

 half-hardy annuals, and evergreen 

 twiners. T. brachyceras and T. tube- 

 rosum are half-hardy tuberous-rooted 



bloom abundantly every year, in April 

 and May, and are a great ornament to 

 our gardens; the tuberous roots spread 

 rapidly by the formation of lateral eyes, 

 so that after some years, if the plants 

 have not been removed, they will form 

 large handsome bushes. The seeds 

 ripen in August, and if sown imme- 

 diately, they will come up the following 

 year. They may be sown either in the 

 open ground, in a shady peat border, or 

 in pots. The stronger seedlings will 

 bloom in the third season." — Gard. 

 Chron. 



TRIOPTERIS. Two species. Stove 

 evergreen twiners. Ripe cuttings. 

 Loam and peat. 



TRIPH/ENIA pro«Mia. Yellow Un- 

 derwing Moth. Mr. Curtis says that 

 " its caterpillar is hatched in July or 

 August, and if the egg has been depo- 



