376 ARBORETUM AND FHUTICETUM. PART III. 



of maturity to the young wood as will enable it to endure the 

 winter. 



App. i. Doubtful Varieties of'Yilia europ&a and americana. 



In the garden of the London Horticultural Society there are some names 

 attached to young plants of lime trees, which will not be found in the fore- 

 going enumeration as distinct. The reason is, that we have not been able to 

 satisfy ourselves that they were sufficiently distinct from the species and 

 varieties which we have enumerated to be worth recording. Among these 

 names are, T. platyphylla vera, T. p. minor, T. prae'cox, T. vitifolia, T. laxi- 

 flora microphylla, and T. pubescens rugosa. 



App. I. Other Species belonging to the Order Tilidcete. 



The genus Grewwz L. (Dec. Prod., i. p. 508., and Dow 1 * Mill., i. p. .547.) consists of a great number of 

 species, mostly natives of tropical climates; but, as several of them inhabit Himalaya and the islands 

 in the Indian Ocean, it is probable that some species might succeed in the neighbourhood of London, 

 against a wall. In the Himalaya, Mr. Royle states that the inner bark of GrSw/a oppositifblia is 

 used for the same purposes as that of the lime tree is in Europe ; that the leaves of G. dfdyma and 

 other species are given as fodder to cattle, and are dried and stacked up for winter use. The wood is 

 used, on account of its lightness, for making boats. Some of the species of Grfiwwi yield pleasant 

 acid berries, much used for making sherbet. The species cannot be considered as likely to prove very 

 ornamental in our gardens, but they will enrich them by increasing the variety. The species which 

 might be tried are the following : G. oppositifblia Roxb., a Nepal shrub of 6ft. with purple flowers ; 

 G. biloba G. Don, a shrub, native of China ; G. occident&lis L., a shrub, native of the Cape of Good 

 Hope, which grows about the height of 10 ft, ha leaves like those of the small elm, purple flowers , 

 and has been cultivated in British green-houses since 1690; G. populifblia l'ahl,a shrub with leaves 

 like those of Populus trernula, found in Egypt; G. pumila Ham., found in Nepal; G. velutlna 

 Vahl, found in Arabia ; G. echinuKita Delile, found in the north of Africa. The only one of these 

 species which is at present in British gardens is G. occidentals Bot. Mag., t. 422., which well deserves 

 a trial against a conservative wall. 



CHAP. XIX. 



OF THE HARDY AND HALF-HARDY LIGNEOUS PLANTS OF THE ORDER 



DISTINCTIVE Characteristics. Thalamiflorous. (H. B.) Calyx with an imbri- 

 cate aestivation. Stamens with filaments monadelphous or polyadelphous, 

 and anthers 2-celled to 4-celled. Leaves alternate. (Lindley's Introd. to N. S. ; 

 and Don's Mill.) The species which endure the open air, belonging to this 

 order, are included in two tribes, Gordonieve, and Camelliex. 



Sect. I. Hardy and half-hardy ligneous Plants belonging to the 

 Tribe Gordomeae. 



Common Character. Sepals 5, free, or joined together at the base. Petals 

 usually connected at the base. Stamens numerous, with filiform filaments, 

 connected at the base. Anther oval, vane-like. Styles 5, distinct, or 

 connected only at the base, or usually united to the tip. Carpels 5, more 

 or less united, 1 2-seeded. Seeds few. Albumen none. Embryo straight. 

 Radicle oblong. Cotyledons leafy, folded lengthwise. Plumule inconspi- 

 cuous. Trees and shrubs of America; a few of Asia. Leaves alternate, 

 usually deciduous, oval or oblong, feather-nerved, and without stipules. 

 (Dec. Prod.,' I p. 527.) The genera are three; and their differential charac- 

 ters arc as follow : 



