170 



■svould be raised from tliem may be I 

 prevented. j 



I'xuLA. — Compositce. — Elecam- '■ 

 j pane. — Some of the foreign species of 

 j this genus are very showy plants, all 

 j with orange-yellow flowers, and large ! 

 i coarse stalks and leaves. They are 

 j only suitable for large gardens or 

 ! shrubberies, where they can have 

 ! plenty of room. They will gi-ow in I 

 I any common garden soil, and they ; 

 j are increased by seeds, or by dividing ; 



the root. 

 / loyoFSi'Diuu.—Cruciferce. — /. 

 j acaide is a pretty little annual plant 

 j found wild on the Basaltic hills near 

 j Lisbon and consequently very suit- 

 able for rockwork. Its flowers, 

 which, though small, are very abund- 

 ant, are white when they first appear, 

 but turn to lilac before they fade. 

 When first introduced, in 1845, it 

 j was supposed to be a Cochlearia. 

 I lFo:sicE^A.—Co7ivolvuldcecs.--'BeaxL- 

 tiful climbing plants, herbaceous and 

 shrubby, which should be brought 

 forward in a stove or hotbed ; though 

 when they have formed their flower- 

 buds, many of them may be planted 

 out in May to flower in the open air. 

 All the species should be grown in a 

 light soil, well manured with decayed 

 leaves, or the very rotten part of an 

 old hotbed. Two beautiful kinds are 

 /.rr<6ro-cce?'i<Zeaahalf-hardy annual, 

 which if planted out in a warm bor- 

 der, will flower beautifully in the open 

 air ; and /. or Pharhitis Learii, 

 which will only flower in a stove. 

 Both these kinds produce an astonish- 

 ing number of flowers, though each 

 flower lasts only one day, and some- 

 times, if too much exposed to the sun, 

 only a few hours ; and both grow with 

 great rapidity and vigour. /. Learii 

 is, however, a shrub, and is propagated 

 by cuttings, which strike rapidly with 

 the aid of a little bottom-heat. /. 

 j^c(/o^ia resembles these species, but 

 it has darker flowers, which will ex- 



pand in greenhouse-heat, and which 

 live two or three days. It is shrubby, 

 and continues flowering till autumn. 

 /. Horsfdllice is also a most splendid 

 climber. It should be grown in a 

 moist stove, in rich light loam, and 

 allowed plenty of water while grow- 

 ing. It thrives best when grafted 

 on /. insignis, and when grown on 

 its own roots, it should be cut down 

 every year to within a few inches 

 of the ground. Another species, 

 /. tyridnthina, has very rich dark 

 flowers, which it produces in great 

 abundance. 



Ipomo'psis. — Polemoniacece. — 

 Beautiful biennial Peruvian plants, 

 with splendid scarlet flowers, which 

 Professor Don, and some other bota- 

 nists, classed with the Grilias, and 

 which were formerly called Cantua. 

 They are free-grooving plants ; but 

 as they are supposed to require pro- 

 tection duiing winter, they are 

 generally grown in pots in England, 

 and kept in a greenhouse. In 

 America, however, it appears that 

 these plants are found in a wild 

 state in Greorgia, and that they are 

 left in the open ground all the winter, 

 without any protection, in the neigh- 

 bourhood of Boston, whence theplants 

 attain a size (seven feet high), and 

 the flowers a brilliancy of colour, 

 quite unknown in Europe. They 

 should be grown in a light and some- 

 what rich soil ; and care should be 

 taken to prevent their roots from 

 becoming sodden with water, as when 

 this is the case, they are very apt to 

 damp off. 



I'Ris. — Iridacece. — There are 

 three distinct kinds of Iris, besides 

 innumerable species, hybrids, and 

 varieties. These are, the fibrous- 

 rooted kinds, which grow best in a 

 fine sandy loam, and which increase 

 rapidly every year by suckers from 

 the roots ; the tuberous-rooted kinds, 

 which are very apt to be destroyed by 



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