§2 POPULAR FIELD BOTANY. 
England, but is met with in Scotland. It is one of the 
noblest of our trees, and the wood is very valuable for many 
purposes, especially for instruments of husbandry, the young 
copse-wood makes hurdles, and the older hop poles. In 
favourable situations it attains a large size, and its timber 
stands next in value to the Oak. Nothing, however, will 
grow under it. Its numerous roots run near the surface, and 
exhaust the soil very much, so that neither corn nor grass 
prosper under its shade. It is, therefore, not suitable to 
hedge-rows, and should stand alone. The flowers appear 
before the leaves, which are later than many trees, and fall 
sooner. 
TRIANDRIA. MOoNoGYNIA. 
COROLLIFLORZ. VALERIANACE. 
FEDIA. (Corn saxap.) 
Generic Character. Calyx of three or four small teeth. 
Corolla of one tubular petal, with a protuberance at the base. 
Stamens fixed on the tube of the flower.- Seed-vessel mem- 
branous, crowned by the permanent calyx. 
Four species of this genus are now to be found; but two 
are uncommon, and not very likely to fall under the obser- 
pad 
