487 



green colour: the stems a foot and a half high, with leaves of the 

 same shape but smaller, and placed opposite; they are terminated 

 by long spikes of blue flowers, which appear in June. It is a native 

 of Germany, Austria, and Russia. 



The sixth species has the slerns very white and woolly, about a 

 foot high: the leaves oblong, hoary, I wo inches and a half long, 

 three quarters of an inch broad, sessile: the flowers deep blue in 

 terminating spikes, and from the upper axils: they appear in June 

 and July. It is a native of Russia, Ukrain Tartary, &c. 



There is a variety with while flowers. 



The seventh has the spikes aggregate, the flowers large, the leaves 

 an inch long, lanceolate wedge-shaped at the base, with lanceolate 

 segments. It is a native of Siberia, flowering in July and August. 



The eighth species is a bushy shrub about two feet high: stem 

 upright, round, very much branched: the branchlets alternate, 

 spreading, round or indistinctly quadrangular, closely leafed on every 

 side, having a pubescent line on each side running down from the 

 oppositions of the leaves, which spread very much, are scarce an 

 inch long, acute, coriaceous, smooth and even, one-nerved, paler 

 underneath, evergreen, border cartilaginous, on very short concave 

 smooth petioles, gibbous at the base on the outside: the racemes 

 single, short, few-flowered, towards the end of the branches, not ter- 

 minating, but just below the top: the pedicels alternate, short, 

 quadrangular, one-flowered. The regular growth of the leaves de- 

 cussated or crosswise, distinguishes this species immediately. 



Culture. These plants may be raised by seed and parting the 

 roots. 



Jn the annual sorts the seeds should be sown in the autumn or 

 very early spring, in the borders or places where the plants are to 

 grow, being lightly covered in: if the seeds be permitted to scatter, 

 good plants may be raised: sometimes they are sown on beds to be 

 afterwards removed. 



In the perennial sorts the roots may be parted in the autumn or 

 early spring, and planted out where they are to grow, or in nursery- 

 rows to be afterwards removed. 



