URTICACE^ 121 



U. campestris, L. (glabra, Mill.), our common Elm. ; 

 montana, With, {major, Sm.), Wych Elm, with some- 

 what larger leaves ; common everywhere ; and U. effusa, 

 Willd. (J>edunculata, Foug.); flowers pendant, on long 

 stalks ; Bile, Aargau, SchafFhausen, rare. 



S. Celtis, Tourn, 



Calyx 5 -cleft ; fruit a fleshy drupe. 

 C. australis, L. ; a tree with solitary stalked flowers in 

 the axils of the leaves ; Southern Switzerland. 



Order LXXIV.— EMPETRACE^. 



Sepals 2-3 ; petals 2-3, very minute ; stamens 3-4 ; 

 fruit a drupe with 2-9 stones. Prostrate shrubby plants 

 with very small leaves. A very small order. 



I. Empetrum, L. 



Flowers pink or white; sepals and petals 3 each; 

 leaves linear, with recurved margins meeting on the 

 under-side of the leaf. 



E. nigrum, L,, Crowberry ; drupe black ; hill-sides, 

 common. 



Order LXXV.— THYMELiEACEiE. 



Flowers usually bisexual, solitary or in cymes ; calyx 

 4-S-lobed, often conspicuous, coloured; stamens 2-10 ; 

 ovary superior, 1-2-celled; fruit a drupe or berry. A 

 small order, of Temperate and Tropical regions ; often 

 fragrant shrubs. 



