TWA 



615 



VAN 



Hardy or half-hardy herbaceous peren- ' bleaching powder (chloride of lime), 



nials. Division. Common soil 



TWAYBLAD?. Listera. 



TWKKDIA. Two species, 

 deciduous twiners. Cuttings or seeds. 

 Sandv loam and peat. 



TYLOPHORA. Three species. 

 Stove evergreen twiners. Cuttings. 

 Peat and loam. 



TYPOGRAPHER BARK BEETLE. 

 See Bostrichus, 



TYTONIA natans. Stove aquatic 

 annual. Seeds. Rich loamy soil, in 

 water. 



ULCER. See Canker. 



U L E X . Furze. Four species. 

 Hardy evergreen shrubs. U. Eiiropcea 

 is increased by young cuttings, and all 

 by seeds. Common light soil. 



there will be no offensive smell. CJyp- 

 sum mixed with urine, or a little oil of 

 Hardy I vitriol poured into it, adds to its utility 

 as a manure. Sulph:iie of iron, in the 

 proportion of seven pounds to every 

 hundred of urine, prevents the escape 

 of ammonia during putrefaction. 



UROPETALON. Six species. Half- 

 hardy and green-house bulbous peren- 

 nials. Offsets and seeds. Loam and 

 leaf-mould. 



UTRICULARIA. Hooded Milfoil. 

 Three species. Hardy aquatic peren- 

 nials. Division. Water. 



UVARIA. Six species. Stove ever- 

 green shrubs; U. zeylanica, a twiner. 

 Ripe cuttings. Sandy loam and peat. 



UVULARIA. Six species. Hardy 



ULiMUS. Elm. Thirteen species ' ,,g~j,_:,P^g^yV-"g„„i;;j^;'l)7;fJo„/Ligh't 

 and many varieties. Hardy deciduous . . > 



trees. Lavers or grafts. Common soil. 



U. integrifolia is a stove evergreen 

 tree. The Wych elm (L' montana) is 

 also propagated bv seed ripened here. 



UMBILICUS. Four species. Hardy 

 and half-hardy herbaceous perennials. 

 Offsets, cuttings, and seeds. Loam, 

 peat, and sand. 



UMBRELLA TREE. Hibiscus gui- 

 necnsis. 



UMBRELLA WORT. Oxybaphus. 



UNC.^RIA. Two species. Stove 

 evergreen climbers. Cuttings. Peat 

 and loam. 



UNDER-GROUND ONION. SeePo- 

 tato Onion. 



UNONA. Ten species. Stove ever- 

 green shrubs, trees, and climbers. Ripe 

 cuttings. Light turfy loam. 



URANI.\. speciosa. Stove herbace- 

 ous perennial. Newly imported seeds. 

 Turfy loam and peat. It requires to be 

 well watered. 



URARI.\. Six species. Stove and 



sandy soil. 



VACCINIUM. Whortleberry. Thirty- 

 two species and some varieties. Chiefly 

 hardy deciduous shrubs; V. caracasa- 

 num and V.meridionale are stove ever- 

 greens ; and a few are liardy and half- 

 hardy evergreen trailers. Layers, 

 seeds, and the stove species cuttings : 

 sandy peat. 



VALERI.\NA. Valerian. Nineteen 

 species. Hardy herbaceous perennials, 

 except V. capensis, which belongs to 

 the green-house, and V. sisymbrifolia, 

 is a hardy biennial. Division. Loam, 

 peat, and sand, for the natives of warna 

 climates, and common soil for the 

 hardy species. 



VALERIANELLA. Three species. 

 Hardy annuals. Seeds. Common soil. 



VALLARIS pergulana. Stove ever- 

 green twiner. Cuttings. Sandy loam 

 and peat. 



VALLESIA. Two species. Stove 

 evergreen shrubs. Cuttings. Sandy 



green-house evergreen shrubs, except loam and peat. 



U. lagoc(phala, a stove herbaceous pe- ' VALLISNERIA spiralis. Green- 



rennial. Seeds or young cuttings, house aquatic perennial. Seeds. Wa- 



Loain, peat, and sand. 



URHDO. See Burberry and Mildew. 



VALLOTA purpurea, and its variety. 



IRINE. See Dung. The urine of Green-house bulbous perennial. Off- 



all animals is excellent as a manure; 

 but it must be given only to plants 

 whilst growing, and in a diluted state. 

 C)ne of the most fertilizing of liquid 

 manures is composed ofcabbage-leaves, 

 and other vegetable refuse, putrefied in 



sets. Peat and sand. 



VANDA. Five species. Stove 

 epiphytes. Division. Wood, and some 

 of the stronger kinds, sphagnum and 

 potsherds. 



VAXDELLI.'V. Four species. Stove 



the urine from a house or stable, and ! annuals, except V. Iiirsuta, which is 



diluted with three times its quantity of] hardv. Seeds. Sandy loam. 



water when applied. If mixed with! VjVNGUERI.^. Three species. Stove 



