O DIANDRIA MONOGYNIA. 



walls, probably on account of the readiness with which its 

 winged seeds (the culverkeys of our pastoral poets) are borne 

 by the wind. It insinuates its roots far into the crevices 

 of these old buildings, and thereby becomes an instrument 

 of the destruction of what affords it support. In like man- 

 ner it fastens upon loose slaty rocks, and decorates them 

 with its verdure. It is one of the latest trees in coming 

 into leaf, and loses its leaves early in autumn. These are 

 greedily eaten by cattle ; and it ought not to be planted in 

 parks or lawns intended for the pasture of milch cows, for 

 they communicate a disagreeable taste to the butter. The 

 wood is tough and valuable, being applicable to a great va- 

 riety of purposes ; and it possesses the very singular pro- 

 perty of being in perfection even in infancy, a pole three 

 inches in diameter being as valuable and durable, for any 

 purpose to which it can be applied, as the timber of the 

 largest tree. 



7. CIRC^EA. 



1. C. lutetiana, stem erect; leaves ovate, slightly toothed, 

 opaque and downy ; clusters one or more, of many small white 

 or reddish flowers. Common Enchanters-nightshade* 



ffab. Moist shady woods or hedges. Near the Carding-mill 

 at Wooler, Dr J. Thompson. Wooded banks below Lang- 

 leyford. July. # 



8. VERONICA. 



* Spikes terminal Root perennial. 



1. V. serpyllifolia, cluster terminal, somewhat spiked ; flowers 

 pale blue or white, with dark streaks ; leaves ovate, slightly cre- 

 nate, three-ribbed, smooth ; capsule inversely heart- shaped, 

 shorter than the style. Smooth Speedwell 



Hob. Pastures and road sides, particularly on a clay soil, 

 common. May, June. 



* * Clusters or spikes lateral. Root perennial* 



2. V. Beccabunga^ leaves elliptical, flat, obtuse ; stem creeping, 

 smooth ; flowers blue. Brooklime. 



Hob. Ditches and water -courses, common. June July. 



3. V. AnagattiS) clusters opposite, flowers light blue ; leaves 

 lanceolate, serrated, acute; stem erect, smooth. Water Speed-, 

 well 



Hab. Ditches, frequent. July. 



