TUS 



C 803 ] 



ULM 



in a kotbeot; fibry, sandy loam and vegetable 

 mould. Winter temp., 55 to 60 ; summer, Co 

 to 85. 



T. heterophy'lla (various-leaved). 20. White. 

 Tilay. Sierra Leone. 



loba'ta (lobed-leaved). White. July. Sierra 



Leone. 1843. 



pinna' ta (leafieted). 15. Pale rose. March. 



Sylhet. 1828. 



TTJSSILA'GO, Coltsfoot. (From tussis, a 

 cough ; used to allay coughs. Nat. ord., 

 Composites [Asteracete]. Linn., IQ-Syn- 

 genesia 2-SuperJlua.) 



Hardy herbaceous perennials. Division of the 

 roots, which are mostly inclined to .spread freely. 

 The flowery of many of the sorts, especially o 

 fra'grans, 'are grateful from their scent, and, if 

 kepv <n pots, are interesting in a greenhouse ij 

 the early mcnthr of the year ; they generally do 

 best in a strong, loamy soil, moderately rich. 

 T. a' Ma (white. Butter Bur), 1. White, March. 

 Europe. 16S3. 



alpi'na (alpine). . Lilac, purple. April. 



Austria. 1710. 



di'scolor (two-coloured;. . Lilac, purple 



April. Austria. 1633. 



Fa'rfarafo'liis variegu'tis(common-va.iiega.te<l- 



leaved. Favfara.) &. Yellow. March. 

 Britain. 



fra'grans (sweet-scented), 1, White. February. 



Italy. 1806. 



fri'gida (cold). . Pale. May. Lapland. 1710. 



leevigu'ta (smooth). .}. Yellow, May. Bohemia. 



1816. 



ni'vea (snowy). 1. White. April. Switzerland. 



1713. 



palma'ta(hznd-leaved). $. White. April. La- 



brador. 1/7S. 

 purpu'rea (purple). Purple, July e Cape of 



Good Hope. 1825. 

 sagitta'ta (arrow- leaved). J. White. April. 



N, Amer. 



TWEE'DIA. (Named after Mr. Tweedie, 

 a botanical collector. Nat. ord., Asckpiads 

 [Asclepiadaceffij. Linn., 5-Pentandria 2- 

 Digynia.) 



Greenhouse twiners. Seeds in a slight hotbed 

 in spring ; cuttings of young shoots, getting firm 

 at the base, in sand, under a bell-glass, in April 

 or May; sandy, fibry loam, with a little peat and 

 leaf -mould; require the protection of a cool 

 greenhouse in winter. 

 T, caeru'lea (blue). 3. Blue. Buenos Ayres. 1836. 



floribu'nda (bundle-flowered). Pink. July. 



Brazil. 1838. 



versi 1 color (changeable-coloured). 3. Blue, 



July. Tucumania. 1836. 



TYLO'PHOEA. (From tylos, a swelling, 

 and phoreo, to bear, the swollen pollen 

 masses. Nat. ord., Asclepiads [Asclepia- 

 dacese]. Linn., 5-Pentandria %.Digynia.) 



Greenhouse evergreen twiners, Cuttings of 

 either old or young- shoots in very sandy *oam, 

 and brick and old lime-rubbish, in spring, though 

 any time will do ; sandy loam, lime-rubbish, and 

 a little old, dried cpw-dung. Winter temp., 40 

 to 45, and dry; summer, 60 to 85, and moist. 

 T. barba'la (beaded), 10, July, N, S, Wales. 

 182*. 



T, exUlis (slender). 10. Pale purple. July. Sylhet, 

 1823. 



grandifio'ra (large-flowered). 10. July. N. S. 



Wales, 1S22. 



TYTO'NIA. The Water Balsam* -(In 

 honour of A. Tyton, a patron of botany. 

 Nat. ord., Balsams [Balsaminacese] . Linn., 

 5-Pentandria 1-Monogynia.) 



This genus is now called Hydrocera* Stove 

 aquatic. Seeds sown in spring in a good hotbed, 

 and grown in strong, loamy soil, with the pot 

 immersed in water in a tub, and receiving the 

 high temperature of a plant-stove from 65 to 90. 

 T. na'tans (swimming). VajriouSj August, E. 

 Ind. 1810. 



U. 



ULCEE. See CANKER. 



U'LEX. Furze. (From the Celtic ac, 

 a point ; the prickly branches. Nat. ord., 

 Leguminous Plants [Fabaceee]. Linn., 16- 

 Monadelphia 6-Decandria.) 



Hardy, yellow-flowered evergreens. Seeds in 

 spring; deep, light soil, though not very par- 

 ticular. The gorse, whin, or furze is valuable, 

 not only for its great beauty, but as constituting 

 a valuable fodder and fence-plant. The Double- 

 blossomed Furze is very beautiful, and worthy of 

 a place in small gardens, and is propagated by 

 cuttings in spring and autumn, in a shady, sandy 

 border, or under hand-glasses. The Upright or 

 Irish Furze is propagated in a similar manner, 

 and is also valuable for fodder ; but it seldom 

 flowers, and when it does has generally only a 

 few flowers on a plant. We are not aware that it 

 has been raised true from seed, and therefore it is 

 supposed to be not a species, but a variety of 

 Europafa or na'na. See HEDGE. 

 U. Europas'a (European. Common). 6. June. 



Britain. 

 flo 1 re-pie 1 no (double-flowered). 6. May. 



Britain. 



na'na (dwarf). 2. August. Britain. 



Provincia'lis, (Provence). 4. July. South Eu- 



rope. 1823. 



stri'cta (erect. Irish). 10. October. Ireland, 



ULLO'A. See JUANULLO'A. 



U'LMUS. The Elm. (From the Celtic 

 name, ulm, Nat. ord., Elmioorts [Ulnia- 

 cesej. Linn., 5-Pentandria Z-Digynia.} 



Nearly all hardy ; all deciduous, and brown- 

 flowered, blooming in April. Campe'stris and 

 its allies, by suckera and layers, and by grafting 

 on the monta'na. The latter is also propagated, 

 not by suckers, but by layers, which root freely ; 

 but chiefly by seeds, which should be gatherer! .n 

 June as soon aS'.ripe, and sown in light, mellow 

 soil ; or dried, and put in bags until the following 

 March or April. Deep, dry, sandy loam suits all 

 the species and varieties, and produces the most 

 valuable timber. 

 U. ala'ta (winged). 30. N. Amer. 1820. 



a'lba (white. Hungarian). 30. Hungary. 1824. 



America! no. (white, American). 40. N. Amer. 

 a'lba (while-branched). 40. N. Amer. 



fo'tiis-variega'tis (variegated-leaved). 



inci'sa (cut-leaved). N. Amer. 



pe'ndula (drooping). N. Amer. 1820. 



rvtbra (red-branched), 40, N. Amer. 1824. 



