CHAP. 1.] 



TILIACE^. 



301 



plant common in English gardens ; and the 

 fifth {Domheyacece) is best known by Astrapcea 

 Wallichii. The qualities of all the plants in this 

 order are mucilaginous. 



ORDER XXXI.—TILIACE^.— THE LINDEN TRIBE. 

 The only genus belonging to the natural 

 order Tiliacese which is easily to be procured 

 in Britain is that of Tilia, the Lime trees. The 

 common Lime (Tilia europcea) is generally a 

 tall, well-formed tree, with rather broad leaves, 

 which are heart-shaped at the base, tapering at 

 the point, and serrated at the margin : they are 

 also smooth on the outer surface, thin, and of a 

 light and deficate texture ; below there is a 

 little tuft of hair at the angle of the veins. The 

 flowers are produced in cymes or compound 

 umbels (see Jig. 

 ^ 20) ; and their 

 main pedicel ap- 

 pears to spring 

 from one long en- 

 tire bract {a). 

 The calyx is in 

 five sepals, and it 

 falls off before the 

 corolla, which is 



Fig. 12(1. — The floweks and sekd- 

 COmpOSed of five vessel of the common Lime tkek. 



pale yellow petals, which are very sweet-scented. 



