PYRE'THRUM INODO'RUM. 
SCENTLESS FEVERFEW, 
Order. 
POLYGAMIA SOPERFLOA. 
Natural Order. 
composite:. 
Native of 
Hcio-ht. 
Flowers in 
Duration. 
Inhabits 
Britain. 
2 feet. 
June, Sept. 
Perennial. 
dry fields. 
No. 359. 
Pyrethrum is an ancient Greek name, adopted for 
a genus that consists of plants which Linneus in- 
cluded under his chrysanthemum, and matricaria, 
with the addition of some of more recent introduc- 
tion. The specific name has reference to its want of 
that powerful scent, so common to its congeners. 
Our present subject is often met with in the nur- 
series as the matricaria grandiflora. Its numerous 
white flowers, and finely-cut deep green foliage, pro- 
duce a pleasing effect, when confined to an upright 
growth, and maintained in a healthy state. Some- 
times, towards the latter part of the season, notwith- 
standing it is as hardy as common chamomile, it be- 
comes unthrifty, and is attacked by insects, which 
render it unsightly. On the first appearance of dis- 
ease, some of the stems should be cut down to the 
earth, whilst others maybe partially shortened, which 
will induce young and more healthy herbage. 
It may be increased by offsets at almost every 
period of the year. We think it desirable that it be 
divided into portions as small as possible, and plant- 
ed in a rather cool and shady situation. This treat- 
ment tends much to its luxuriant appearance. 
Hort. Kew. 2, v. 5, 99. 
Class. 
SYNCENESIA. 
