chap, xi.] PETUNIAS. 363 
flowers of the Verbenas should always be cut 
off as soon as they wither. The Lemon 
plant* Verbena triphylla, now called Aloysia 
citriodora, is remarkable for the sweetness of 
the odour of its leaves. It is tolerably hardy; 
but requires great care in watering; as the 
leaves will soon curl up and wither if it has 
JL 
too little, and they will drop off if it has too 
much. The flower has no beauty ; and the 
only recommendation of the plant is the de¬ 
lightful fragrance of its leaves. 
Petunias may be raised; either from seed 
or cuttings; as they seed freely; and strike 
readily. The first kind introduced was the 
white-flowered kind; Petunia nyctaginiflora; 
which is an abundant flowerer; and very fra¬ 
grant Petunia phoenicea; or violacea; is 
another original species; and from these 
nearly all the myriads of hybrids and va¬ 
rieties have arisen. These Petunias hybri¬ 
dize freely with each other, and most of the 
kinds produce abundance of seed. P. bicolor 
is a different species, and does not either mix 
well with the others, or seed freely. Petunias 
may be treated as annuals, and raised on a 
slight hot-bed every year from seed; and 
