CONVOLVULUS. 



C3 



CORMS. 



weaker. Tliis, to a certain extent, 

 takes place in all conservatories, and 

 is unavoidable. The only remedy for 

 the evil, is occasionally to cut in the 

 large roots of the stronger plants, and 

 prune in their tops, and every six or 

 seven years to take up all the plants, 

 excepting, perhaps, some of the 

 climbers, and to renew the soil, and 

 re-plant either with the same or with 

 other plants, or with part of both. 

 The pillars which support the roof, 

 and, to a certain extent, the under side 

 of the rafters, may be clothed with 

 creepers; but great care must be 

 taken that these do not exclude too 

 mucli light from the plants beneath 

 them, which may always be known 

 by the etiolated sickly appearance of 

 the latter. The most suitable plants 

 for conservatories are those that 

 flower in the winter season, or very 

 early in spring ; such as the Acacias, 

 Camellias, Melaleucas, Metrosideroses, 

 Banksias, Oleanders, &c. ; and for 

 climbers, the Kennedias, Zychyas, 

 Hardenbergias, Bignonias, Tecomas, 

 Ipomaeas, Cobsea, Passifloras, Tacso- 

 nia, Clematises, &c. 



Convalla'ria — Smilacea. — The 

 Lily of the Valley. A well. known 

 and very fragrant little flower, re- 

 quiring a shady situation, and rather 

 a moist soil, which should be tolerably 

 light. The plant will grow under 

 the drip of trees, and it is increased 

 by dividing the root. 



Convolvulus. — Convolvulacece. 

 — Well-known splendid climbing 

 plants, hardy and half-hardy, annual 

 and perennial. They all requite a 

 rich but light soil, and will grow 

 well in a compost of equal parts of 

 heath mould and loam, enriched with 

 about the proportion of a fourth part 

 to the whole, of decayed leaves, or 

 thoroughly rotten manure; and they 

 should be trained against stakes or 

 trellis-work, as their stems are too 

 feeble to support themselves. Most 



of the tender kinds of Convolvulus 

 were separated from it by Linnaeus, 

 and formed into the genus Ipomcea. 

 All the stove kinds may be made to 

 flower in the open air, during sum- 

 mer, by contriving to keep the roots 

 in heat (see Allamanda) ; and the 

 hardy species only require sowing in 

 the open ground. 



Coral trf.e. — See Erythrina. 



Corbularia. — Mr. Haworth's 

 name for one of the new genera he 

 formed out of Narcissus. 



Co'rchorus. — Tiliacece. — Hot- 

 house plants, not sufficiently orna- 

 mental to be worthy of general culti- 

 vation. For the well-known Japan 

 half-hardy shrub, generally called 

 Corchorus, see Kerria. 



Coreo'psis. — Composites. — Most 

 of the showy annuals formerly known 

 by this name, are now called Calliop- 

 sis, while most of the perennial spe- 

 cies are still left iu the former genus. 

 For the difference between the deri- 

 vation of the two names, and the 

 culture of the annual species, see 

 Calliopsis. The perennial kinds are 

 quite hardy ; but as they are tall- 

 growing spreading plants, they require 

 a great deal of room, and should be 

 planted at the back of the borders. 

 They will grow in any common soil ; 

 atid they are propagated by division of 

 the roots. 



Coria^ria — Coriacece. — The myr- 

 tle-leaved Sumach. A dwarf shrub, 

 with handsome leaves, and but small 

 flowers. Jt will grow in any com- 

 mon soil, and is increased by division 

 of the roots. 



Corms. — Solid bulbs, such as the 

 Crocus, the different kinds of Moraeas, 

 Babianas, and most of the Iridaceaj. 

 Bulbs are of three kinds : those which 

 have a number of coats, or skins, one 

 within the other, like the Hyacinth, 

 which are called tunicated bulbs ; 

 those which consist of a number of 

 scales, only attached at the base, like 



